This guide develops the tax classification, basis calculations, return-review judgments, ethical duties, and business-law distinctions tested in CPA REG. Its twenty original practice items combine multiple-choice questions with document-based worksheet tasks, supported by sixty worked concepts across the five allocated domains. The scope follows the January 2026 REG Core blueprint for this October 16, 2026 edition; later blueprint versions are outside this guide. This is a representative preview, not a full-length mock examination or the separate TCP Discipline. Source s1 establishes examination scope and format, not every technical proposition. Supplied calculation assumptions govern their exercises; real returns require the applicable tax-year law and jurisdiction-specific rules.
What this guide covers
Practice CPA REG tax and business-law decisions with 20 original items and 60 worked study concepts.
Ethics, Professional Responsibilities and Federal Tax Procedures
1. Circular 230 diligence and discovered errors
Circular 230 diligence requires care in preparing returns, making representations, and evaluating information used in tax practice. Good-faith reliance on client information is generally permitted, but apparent errors, omissions, or inconsistencies require reasonable inquiry. Discovering a client's prior noncompliance also creates a duty to advise the client promptly about the problem and its consequences. That duty does not itself authorize disclosure to the IRS without permission or another applicable basis. Distinguish investigating current-return facts, advising about a prior error, and actually filing a correction; each involves a different decision and authorization.
Worked example: A client reports rental income for eleven months but claims twelve monthly management fees. The CPA asks whether a deposit, vacancy, or prepaid fee explains the difference, checks the records, and determines the proper current treatment before completing the return.
Common mistake: Permitted reliance on client information does not mean a preparer can ignore contradictions that become apparent during preparation.
Official syllabus reference: [1]
2. Concurrent conflicts and informed written consent
A tax-practice conflict can arise when representing one client is directly adverse to another or when responsibilities to another person materially limit representation. Under Circular 230, some conflicts may be addressed when the practitioner reasonably believes competent and diligent representation remains possible, representation is legally permissible, and affected clients provide informed consent confirmed in writing. Consent does not cure every conflict. Analyze the actual interests and information restrictions before relying on a waiver. Joint representation of owners may become problematic when tax positions shift income, deductions, or potential liability between them.
Worked example: Two former partners ask one CPA to handle an allocation dispute. Increasing one partner's deduction would reduce the other's deduction. The CPA identifies the adversity, evaluates whether competent representation of both remains possible, and assesses consent requirements before accepting the work.
Common mistake: A longstanding relationship with both clients does not establish informed consent or make directly adverse tax interests disappear.
Official syllabus reference: [1]
3. Paid preparers and position-related penalties
Federal preparer rules can apply to a person paid to prepare all or a substantial portion of a return or refund claim, including some nonsigning preparers. Distinguish an unreasonable return position from willful understatement or reckless or intentional disregard of rules, because the governing standards and potential penalties differ. Disclosure can matter for certain positions, but it cannot rescue a position lacking the required substantive support. Tax shelters and reportable transactions can face stricter standards. Determine the preparer's role, compensation, position support, disclosure, and state of knowledge before selecting a penalty framework.
Worked example: A paid specialist computes a substantial deduction schedule used by the signing preparer. The specialist does not sign the return, but the work may still create preparer responsibilities. The firm examines the specialist's substantive role rather than treating the signature as decisive.
Common mistake: Only the person whose name appears in the signature block can be a tax return preparer subject to federal rules.
Official syllabus reference: [1]
4. State-board licensing and disciplinary jurisdiction
State boards of accountancy administer CPA licensing under their jurisdictions' statutes and rules. Their responsibilities can include initial licensure, renewal, continuing education, professional conduct, investigations, and disciplinary sanctions. Passing the Uniform CPA Examination is one component of licensure rather than a substitute for the license itself. Distinguish state-board authority from the IRS's regulation of federal tax practice and from professional membership organizations' disciplinary systems. A single act can implicate more than one system. Requirements for mobility, firm registration, experience, and renewal must be evaluated under the relevant jurisdiction rather than assumed nationally uniform.
Worked example: A CPA licensed in one state begins serving clients connected with another state. The CPA evaluates the second state's applicable practice privileges and firm rules. A passing examination score alone does not answer whether the proposed practice arrangement satisfies those requirements.
Common mistake: Uniform examination content does not make every state's licensing, renewal, mobility, or disciplinary requirements identical for all practitioners.
Official syllabus reference: [1]
5. Examination, Appeals, and judicial forum selection
An IRS examination develops proposed adjustments; administrative Appeals provides an opportunity for independent resolution within its authority. Judicial review follows distinct procedural routes. A timely Tax Court deficiency case generally permits eligible income-tax disputes to be heard before payment. Ordinary refund litigation generally follows payment, a proper administrative refund claim, and satisfaction of applicable prerequisites in a district court or the Court of Federal Claims. Administrative negotiations do not automatically suspend statutory deadlines. Identify the notice, tax type, payment status, forum requirements, and applicable deadline before deciding how to preserve review rights.
Worked example: A taxpayer disagrees with an examination adjustment and receives a statutory deficiency notice. Because the taxpayer wants review before paying, the adviser examines Tax Court eligibility and the petition deadline while collecting supporting evidence, rather than assuming continued negotiations preserve every judicial option.
Common mistake: Requesting another meeting with the IRS does not automatically extend a statutory deadline for seeking judicial review of a deficiency.
Official syllabus reference: [1]
6. Substantiation, position disclosure, and foreign accounts
Substantiation establishes transaction facts, while return-position disclosure communicates a potentially contested legal treatment. Neither substitutes for the other. Certain expenses require specific records beyond a general estimate, and an explanatory attachment does not create proof of payment or business purpose. Foreign-account reporting introduces a separate distinction: income tax reporting and applicable information-reporting duties are not identical. FBAR obligations and Form 8938 obligations use different statutory frameworks and conditions. Analyze ownership or authority, account characteristics, aggregation, filing status, residence, and the applicable reporting rules rather than assuming one filing automatically satisfies another.
Worked example: A taxpayer reports all interest earned on an overseas account. The preparer still evaluates separate foreign-account information obligations. Conversely, filing an account report would not establish the amount or business purpose of an unrelated expense claimed on the income tax return.
Common mistake: Disclosing a deduction does not substantiate it, and reporting foreign interest does not necessarily complete every foreign-account reporting obligation.
Official syllabus reference: [1]
7. Failure-to-file, failure-to-pay, and accuracy penalties
Taxpayer penalties respond to different failures and should be classified before being calculated. Failure-to-file concerns timely filing, failure-to-pay concerns timely payment, and accuracy-related penalties address specified underpayments such as those arising from negligence or substantial understatement. An extension to file ordinarily does not extend the payment deadline. Reasonable-cause defenses depend on the particular penalty, facts, and governing requirements; reliance on advice is not automatically sufficient. Penalties and statutory interest also serve different functions. Use the relevant tax period and penalty rules rather than applying one rate or defense to every compliance problem.
Worked example: A taxpayer obtains a filing extension but pays the balance months after the original payment deadline. The adviser separately evaluates payment-related consequences and interest. The extension may protect against late filing when its conditions are met, but does not itself establish timely payment.
Common mistake: A filing extension does not generally postpone the tax-payment deadline or eliminate interest on an unpaid amount for that period.
Official syllabus reference: [1]
8. Statutes, regulations, cases, and administrative guidance
Tax research begins by identifying applicable statutory language and effective dates, then examining regulations, judicial interpretation, and relevant administrative guidance. Authority must be evaluated for its type, applicability, jurisdiction, and current validity rather than placed in a simplistic single ranking for every dispute. A controlling court decision can determine how statutory language applies within its jurisdiction. IRS publications and general website explanations help taxpayers but ordinarily do not override statutes or valid regulations. An annotation, software explanation, or commercial article is a research aid; trace its proposition to the underlying authority before relying on it.
Worked example: A software help screen describes a deduction broadly, but the cited Code provision contains an exception covering the client's transaction. The preparer reads the exception and its effective date, then adjusts the return treatment instead of relying on the screen's summary.
Common mistake: A convenient administrative summary or software explanation does not override an applicable statutory restriction merely because it was updated recently.
Official syllabus reference: [1]
9. Professional liability, confidentiality, and privilege
A preparer's common-law liability can involve duty, breach, causation, and damages, while third-party liability depends on the jurisdiction and legal theory. Confidentiality and evidentiary privilege are separate protections. Ethical or statutory confidentiality can restrict disclosure even when a communication is not privileged in litigation. The federal tax-practitioner privilege is limited and does not create blanket protection for return-preparation materials, criminal tax matters, or every communication with a CPA. Identify the service performed, purpose of the communication, proceeding, and applicable law. Client consent to disclosure also does not automatically resolve every professional or legal issue.
Worked example: A client sends receipts to a CPA to prepare a return and separately requests tax advice. The CPA protects both sets of information as appropriate but does not promise that every receipt or discussion is privileged if a later proceeding seeks disclosure.
Common mistake: Confidential client information and legally privileged communications are not interchangeable categories, and a CPA engagement does not automatically create blanket privilege.
Official syllabus reference: [1]
Business Law
10. Actual authority, apparent authority, and ratification
Actual authority arises from the principal's manifestations to the agent and includes express authority and authority reasonably implied by the assignment. Apparent authority arises from the principal's manifestations to a third party that support a reasonable belief in the agent's authority. An agent's unsupported assertion ordinarily cannot create apparent authority by itself. Ratification occurs when a principal appropriately affirms a previously unauthorized transaction with the required knowledge and other conditions. Determine who communicated what to whom. A private restriction may defeat actual authority without defeating apparent authority in a transaction with an uninformed third party.
Worked example: A company tells a vendor that its manager handles routine orders, but privately imposes a purchasing cap. The manager exceeds the cap on an otherwise routine order. The vendor's reasonable reliance on the company's representation can support apparent authority despite the private restriction.
Common mistake: An agent's authority cannot be analyzed solely from the job title or the agent's own claims about purchasing power.
Official syllabus reference: [1]
11. Agent loyalty and principal liability
An agent owes duties that commonly include loyalty, care, obedience to lawful instructions, accounting, and disclosure of relevant information. Secret profits and undisclosed adverse interests implicate loyalty even when the principal receives an acceptable price. Contract liability depends on authority and whether the principal is disclosed, unidentified, or undisclosed. Tort liability uses a different analysis: an employer may be vicariously liable for an employee's tort within the scope of employment, while independent-contractor relationships generally follow different rules and exceptions. The agent remains responsible for the agent's own tortious conduct despite acting for a principal.
Worked example: A purchasing agent secretly receives a rebate from a supplier chosen for the employer. Even if the employer pays a market price, the concealed benefit creates a loyalty problem. Separately, whether the employer owes the supplier depends on authority and contractual facts.
Common mistake: A transaction can breach an agent's loyalty duty even when the principal cannot show that its purchase price exceeded market value.
Official syllabus reference: [1]
12. Contract formation and statute-of-frauds defenses
Contract formation generally requires mutual assent, consideration or an applicable substitute, capacity, and a lawful objective. Distinguish formation from enforceability: parties can reach an agreement that encounters a statute-of-frauds defense because an applicable category requires sufficient written evidence. UCC Article 2 supplies special rules for goods, including merchant-related provisions and good-faith modifications without new consideration. Common-law services contracts generally follow different consideration and acceptance rules. Classify the transaction first, identify the offer and acceptance, and then test formal requirements and defenses. An oral agreement is not automatically invalid merely because writing would be prudent.
Worked example: A designer agrees orally to create a logo, while a retailer agrees to buy inventory under a separate transaction. The analyst classifies the design service and goods sale separately before applying formation and writing rules, rather than assuming the same statute governs both.
Common mistake: The absence of a signed document does not automatically mean no contract formed or that every oral agreement is unenforceable.
Official syllabus reference: [1]
13. Performance, conditions, and discharge
Performance analysis asks what each party promised, whether a condition must occur, and whether a shortfall constitutes material breach. Common-law substantial performance can support recovery subject to damages for defects, while UCC goods contracts involve perfect-tender principles with important qualifications such as cure and installment-contract rules. Discharge may result from performance, mutual agreement, novation, or qualifying operation of law. Impossibility, impracticability, and frustration have distinct requirements and are not triggered merely by reduced profitability. A release, accord and satisfaction, and substituted contract should be distinguished by their terms and the effect of actual performance.
Worked example: A contractor substantially completes an office renovation but uses a slightly different approved-quality fixture. The customer may have a damages claim without being entitled to withhold the entire price. A materially incomplete renovation would require a different performance and breach analysis.
Common mistake: Every deviation from a contract does not necessarily discharge the other party, and ordinary increased costs do not automatically excuse performance.
Official syllabus reference: [1]
14. Expectation damages, mitigation, and equitable remedies
Expectation damages generally aim to place the injured party in the position performance would have produced, subject to rules such as foreseeability, reasonable certainty, and avoidable loss. Mitigation limits recovery for losses reasonably avoidable after breach; it does not require unreasonable sacrifice. Incidental and consequential damages have different functions and proof requirements. Liquidated damages must satisfy applicable enforceability standards rather than operate as an impermissible penalty. Specific performance may be appropriate when money damages are inadequate, commonly for unique property. Match the remedy to the promised performance and proven loss rather than assuming breach always produces the contract price.
Worked example: A supplier breaches a $20,000 goods contract. The buyer reasonably purchases equivalent goods for $22,000 and incurs $300 of necessary incidental costs. Assuming all requirements are met, the basic cover-related claim is $2,300 rather than the entire replacement purchase price.
Common mistake: Damages generally compensate proven contractual loss; they do not automatically reimburse the entire replacement cost without subtracting the original price.
Official syllabus reference: [1]
15. Attachment, perfection, and secured-creditor priority
Attachment makes a security interest enforceable against the debtor when the applicable requirements are met, generally including value, debtor rights in collateral, and an adequate security agreement or qualifying possession or control. Perfection adds the step required to protect against certain competing claims, often filing but sometimes possession, control, or automatic perfection. A financing statement is not the security agreement itself. Priority then determines whose claim prevails, using rules that vary with collateral and claimant type. The ordinary first-to-file-or-perfect rule has exceptions, including qualifying purchase-money interests, so classify the collateral and competition before choosing the rule.
Worked example: A lender has a signed security agreement covering equipment and advances the loan, satisfying attachment requirements. It then files correctly to perfect. When another lender claims the same equipment, the analyst compares qualifying filing or perfection dates and checks for special priority exceptions.
Common mistake: Having an enforceable security agreement does not automatically establish perfection or priority over every later creditor or purchaser of collateral.
Official syllabus reference: [1]
16. Guaranty obligations and surety reimbursement rights
A guaranty or surety arrangement adds another obligor to support a debtor's obligation, but liability depends on the agreement and governing law. A guaranty of payment differs from a guaranty of collection, which can require additional collection efforts before liability arises. After paying, a surety may obtain reimbursement from the principal debtor and subrogation to the creditor's rights. Material unauthorized changes or impairment of collateral can affect defenses, subject to consent and applicable rules. Separate the creditor's direct claim, the guarantor's defenses, and the guarantor's later recovery rights rather than treating all three as one claim.
Worked example: An owner guarantees payment of a company loan and later pays the bank after default. Payment may give the owner reimbursement and subrogation rights against the company. Whether the bank first had to pursue the company depends on the guaranty's terms and governing rules.
Common mistake: A guarantor's right to recover from the debtor after payment does not mean the creditor must always sue the debtor first.
Official syllabus reference: [1]
17. Bankruptcy chapters, automatic stay, and claim priority
Chapter 7 generally concerns liquidation, Chapter 11 reorganization, and Chapter 13 adjustment of qualifying individuals' debts through a plan. Eligibility and discharge rules differ, including the treatment of business entities. Filing generally triggers an automatic stay against specified collection activity, subject to exceptions and relief from stay. A secured creditor's collateral rights differ from an unsecured creditor's distribution claim. Priority unsecured claims are paid according to statutory ranking rather than equal sharing with every general unsecured creditor. Discharge, lien survival, and distribution are separate questions; receiving little from the estate does not alone determine whether an obligation is discharged.
Worked example: A lender holds collateral worth less than its allowed claim in a Chapter 7 case. Its secured and potential unsecured portions require separate analysis. A general trade creditor cannot infer equal treatment with the collateral-backed portion merely because both claims arise before filing.
Common mistake: Bankruptcy discharge does not automatically erase every lien, every debt category, or the different distribution rights of secured and unsecured creditors.
Official syllabus reference: [1]
18. Worker classification and employment-tax responsibilities
Federal employment-tax classification generally examines the relationship's substance, including behavioral control, financial control, and the parties' relationship. Contract labels, invoice payment, and worker preference do not independently determine status. An employer generally has withholding, deposit, reporting, and employer-tax responsibilities for employees, while independent contractors generally handle their own self-employment obligations. Different statutes can apply different worker tests, so the federal tax analysis should not automatically be imported into every wage-law dispute. Evaluate instructions, tools, investment, opportunity for profit or loss, benefits, permanence, and integration using the applicable framework rather than counting factors mechanically.
Worked example: A worker signs an independent-contractor agreement but follows the company's daily schedule, uses its equipment, receives detailed instructions, and performs an ongoing core function. Those facts require substantive classification analysis; the signed label and payment through accounts payable do not settle the result.
Common mistake: Issuing an information return or obtaining a contractor agreement does not by itself establish that a worker is an independent contractor.
Official syllabus reference: [1]
19. ACA employer coverage and premium tax credits
The Affordable Care Act contains employer responsibilities and individual coverage-related tax provisions that must be analyzed separately. Employer shared-responsibility analysis considers applicable-large-employer status, full-time employees and equivalents, coverage offers, affordability, and minimum value under the relevant year's rules. An individual's premium tax credit depends on separate eligibility and Marketplace coverage requirements, with employer coverage potentially affecting eligibility. Advance credits generally require reconciliation using actual-year information. Avoid applying a remembered affordability percentage or temporary subsidy rule without checking its effective year. Employer penalties and an employee's credit are related through statutory conditions but are not interchangeable computations.
Worked example: An employee obtains Marketplace insurance and receives advance premium credits while an employer offers coverage. The tax preparer evaluates the offer's relevant affordability and minimum-value facts and reconciles advance credits using actual information, rather than assuming Marketplace enrollment alone establishes final credit eligibility.
Common mistake: Marketplace enrollment and advance subsidy payments do not conclusively establish the final premium tax credit or resolve the employer's separate obligations.
Official syllabus reference: [1]
20. FCPA corrupt payments and issuer accounting controls
The Foreign Corrupt Practices Act addresses specified corrupt offers or transfers involving foreign officials to obtain or retain business, including qualifying indirect payments through intermediaries. Knowledge and statutory coverage matter; using a consultant does not automatically insulate a payer. The narrow facilitating-payment provision concerns routine governmental action rather than discretionary business awards. For issuers, books-and-records and internal-accounting-controls provisions create additional obligations distinct from anti-bribery prohibitions. A misleading expense description can therefore raise an accounting issue alongside the payment itself. Analyze the recipient, purpose, intermediary knowledge, statutory jurisdiction, potential defenses, and recording separately.
Worked example: A distributor asks a U.S. issuer to reimburse a vaguely described consulting fee, while emails identify a payment intended to influence a ministry's contract award. The reviewer evaluates the corrupt-payment facts and the misleading recording, rather than treating the invoice label as decisive.
Common mistake: Payments routed through an intermediary and recorded as consulting are not automatically outside either anti-bribery rules or issuer accounting requirements.
Official syllabus reference: [1]
21. Entity formation, management authority, and dissolution
Business forms differ in formation requirements, owner liability, management authority, and continuity. A corporation generally arises through statutory filing; a general partnership can arise from conduct without a formal filing when governing requirements are met. LLC governance depends on applicable law and the operating agreement, including whether management is vested in members or managers. Limited liability does not excuse an owner's own torts, guarantees, or other independent obligations. Dissolution begins a winding-up process rather than necessarily ending every obligation immediately. Separate state-law entity characteristics from federal tax classification: an LLC can retain its legal form while receiving different federal tax treatment.
Worked example: Two owners form a manager-managed LLC and elect corporate tax treatment. Their tax election does not automatically give every member authority to sign operating contracts. Authority remains a state-law and agreement question, while the election changes the federal tax classification.
Common mistake: Electing corporate tax treatment does not automatically convert an LLC into a state-law corporation or rewrite its management authority provisions.
Official syllabus reference: [1]
Federal Taxation of Property Transactions
22. Purchased-asset basis and capitalization
Purchased business property generally begins with cost basis, including amounts necessary to acquire the asset and prepare it for its intended use. Freight, installation, and testing can therefore enter basis, while separately qualifying current expenses require different treatment. Allocate a bundled purchase among distinct assets using an appropriate supported allocation; land and a building cannot simply share one depreciation treatment. Financing principal is not an additional acquisition cost when the purchase price already includes it, while loan-related charges require their own analysis. Basis determines future cost recovery, so a source-document review should precede the depreciation calculation.
Worked example: A business pays $50,000 for equipment, $2,000 for delivery, and $3,000 for necessary installation. Assuming all three amounts qualify for capitalization, initial basis is $55,000. A separately documented employee-training bill is evaluated independently rather than automatically added to equipment basis.
Common mistake: Capitalizing only the sticker price can omit necessary acquisition costs, while adding loan principal again can duplicate an already included purchase cost.
Official syllabus reference: [1]
23. Personal-to-business conversion and dual basis
Property converted from personal to business use generally uses the lower of adjusted basis or fair market value at conversion for depreciation. This prevents preconversion personal decline in value from becoming a business depreciation deduction. Later disposition can require separate gain and loss basis calculations, adjusted for depreciation, rather than blindly reusing the original depreciation basis for every purpose. Document both historical adjusted basis and conversion-date fair market value. The placed-in-service date is when the property becomes ready and available for business use, which can differ from purchase, conversion planning, or the first date revenue is earned.
Worked example: A camera has $9,000 adjusted basis and $6,000 fair market value when converted to business use. Its depreciation basis is $6,000. The owner retains the $9,000 historical record as well because later gain-or-loss analysis can require a different starting basis.
Common mistake: The lower conversion value establishes depreciation basis, but it does not automatically replace historical basis for every later disposition calculation.
Official syllabus reference: [1]
24. Gift dual basis and inherited-property basis
Gift property generally carries the donor's adjusted basis for gain, subject to applicable adjustments. When fair market value at the gift date is below donor basis, a separate fair-market-value loss basis prevents transfer of the donor's built-in personal loss. A sale between those two bases can produce neither gain nor loss. Inherited property generally receives a basis tied to estate valuation, commonly date-of-death fair market value, subject to exceptions and valid alternative valuation rules. Inherited capital assets generally receive long-term holding treatment. Do not apply the gift carryover rule to an inheritance merely because both transfers occur without a purchase.
Worked example: A donor's stock basis is $15,000, but gift-date value is $10,000. The recipient sells it for $12,000. Assuming no relevant adjustments, the price lies between gain basis and loss basis, so the transaction produces neither taxable gain nor deductible loss.
Common mistake: A gift's fair market value is not universally the recipient's basis, and an inheritance does not generally follow ordinary gift carryover rules.
Official syllabus reference: [1]
25. Wash-sale disallowance and replacement-share basis
A wash sale can arise when stock or securities are sold at a loss and substantially identical stock or securities are acquired within the statutory window surrounding the sale. The usual taxable-account result defers the disallowed loss by adding it to replacement-property basis, with related holding-period consequences. Partial replacement generally requires matching the affected shares rather than disallowing every loss indiscriminately. Transactions involving retirement accounts require special attention because the usual taxable-account basis recovery may not occur. A similar economic exposure does not automatically establish substantial identity; classify the actual instruments and transaction dates.
Worked example: An investor sells 100 shares with $2,000 basis for $1,500 and repurchases the same 100 shares within the wash-sale window for $1,600 in a taxable account. Assuming the full loss is disallowed, replacement basis becomes $2,100 rather than $1,600.
Common mistake: A wash sale generally defers a taxable-account loss through replacement basis; it does not usually make the loss currently deductible.
Official syllabus reference: [1]
26. MACRS conventions, Section 179, and bonus depreciation
MACRS requires identifying depreciable basis, asset class, recovery period, method, convention, and placed-in-service date. A supplied table percentage generally already incorporates the convention, so applying another half-year reduction duplicates it. Land is not depreciable. Section 179 and bonus depreciation are separate provisions with eligibility requirements and potentially different limitations, elections, and effective-date rules. Apply the applicable ordering before regular MACRS to avoid recovering the same basis twice. Because special-expensing provisions can change with legislation and acquisition dates, do not infer a current percentage or dollar limit from an older schedule or from the blueprint's publication year.
Worked example: A machine has $40,000 depreciable basis after any special deductions. The applicable first-year table percentage is supplied as 20%. Regular depreciation is $8,000; multiplying that result by another one-half would incorrectly apply the convention twice and reduce the deduction to $4,000.
Common mistake: A first-year MACRS table rate normally includes its convention, and bonus depreciation is not interchangeable with a Section 179 election.
Official syllabus reference: [1]
27. Acquired intangibles, startup costs, and financing costs
Intangible expenditures must be classified before selecting an amortization period. Qualifying acquired Section 197 intangibles generally use fifteen-year amortization beginning with the acquisition month. Eligible startup and organizational expenditures follow separate rules that can permit limited immediate deductions and amortization of the remainder, with thresholds and phaseouts requiring the applicable tax-year law. Startup expenditures generally begin amortization when the active business begins. Debt-issuance costs generally follow financing-specific rules tied to the debt rather than automatically using the Section 197 period. Similar accounting labels therefore do not establish identical federal tax recovery.
Worked example: A business buys goodwill, incurs preopening investigatory expenses, and pays fees to obtain a five-year loan. The preparer classifies the three costs separately: acquired-intangible treatment, startup-cost treatment, and financing-cost treatment may produce different start dates and recovery calculations.
Common mistake: Every intangible business cost does not use the same fifteen-year schedule, and organizational, startup, and loan costs require separate classification.
Official syllabus reference: [1]
Federal Taxation of Individuals
28. Taxable compensation, retirement receipts, and damages
Gross income broadly includes accessions to wealth unless a specific exclusion applies. Wages, taxable fringe benefits, interest, dividends, partnership guaranteed payments, and taxable retirement distributions require classification under their own rules. A retirement distribution can include recovery of previously taxed basis, so the gross payment and taxable amount may differ. Lawsuit proceeds follow the nature of the claim and applicable exclusions; punitive damages generally remain taxable even when another component has different treatment. Review source documents and underlying facts rather than assuming every amount reported on an information return is entirely taxable or entirely excluded.
Worked example: A retirement statement shows a $20,000 distribution, with $3,000 identified as recovery of after-tax basis under the applicable rules. The preparer evaluates a $17,000 taxable amount rather than including the entire cash receipt or excluding the distribution because some basis exists.
Common mistake: The amount deposited in a bank account does not by itself determine the taxable portion of retirement distributions or lawsuit recoveries.
Official syllabus reference: [1]
29. Gifts, municipal interest, and life-insurance exclusions
A genuine gift generally is excluded from the recipient's gross income, but income subsequently earned by gifted property remains taxable unless separately excluded. Qualifying municipal-bond interest generally is excluded from regular federal gross income, although other tax computations and reporting can require attention. Life-insurance proceeds received by reason of death generally qualify for exclusion, subject to exceptions such as applicable transfer-for-value rules. Interest paid on retained insurance proceeds is a separate income item. Distinguish the source of the principal receipt from later earnings and do not assume a payer's description alone establishes that a transfer is a gift.
Worked example: A beneficiary receives $100,000 of qualifying death proceeds and $2,000 of separately stated interest for delayed payment. The death proceeds can be excluded under the stated assumptions, while the interest remains taxable. Combining both amounts as insurance proceeds would conceal the distinction.
Common mistake: Excluding a gift or qualifying insurance principal does not automatically exclude interest, dividends, or other earnings generated by that property.
Official syllabus reference: [1]
30. Capital-asset basis, holding periods, and digital assets
Capital gain or loss generally equals amount realized less adjusted basis, with character depending on the asset and transaction. Holding period distinguishes short-term from long-term treatment under the applicable rules; gifted and inherited assets can have special holding-period consequences. Digital assets held for investment generally require gain-or-loss recognition when sold or exchanged, including exchanges for another digital asset or purchases of goods. Cash proceeds are not required. Determine the disposed units, basis method permitted and used, transaction costs, and value received. A platform's proceeds report does not replace missing basis records or establish that every receipt is a sale.
Worked example: An investor exchanges a digital asset with $2,400 basis for another token worth $3,100. Assuming an investment capital asset and no relevant transaction costs, the exchange realizes $700 gain even though the investor receives no dollars. Holding-period records determine its capital character.
Common mistake: Exchanging investment cryptocurrency for another token can be taxable even when no cash leaves the platform or enters the taxpayer's bank account.
Official syllabus reference: [1]
31. Final individual returns and income in respect of a decedent
A decedent's final individual return generally includes income properly reportable through the date of death under the decedent's accounting method. Income in respect of a decedent, or IRD, is income earned or otherwise attributable to the decedent but not properly included before death; it is generally taxed to the estate or beneficiary receiving it. IRD does not ordinarily receive the usual inherited-property basis step-up that would eliminate its income character. Separate final-return income, postdeath income from estate assets, and IRD. The date cash arrives is important but must be interpreted through the accounting and substantive tax rules.
Worked example: A cash-method employee dies before receiving wages already earned. When the estate later receives that paycheck, the adviser evaluates IRD treatment rather than automatically adding it to the final Form 1040 or treating it as tax-free inherited principal with stepped-up basis.
Common mistake: Not every payment connected with a deceased person belongs on the final individual return, and inherited status does not erase IRD income.
Official syllabus reference: [1]
32. Schedule K-1 character and distribution distinctions
Pass-through taxation generally requires owners to report allocated taxable items even when no cash is distributed. Ordinary business income, interest, capital gains, charitable contributions, and other separately stated items retain categories needed for owner-level treatment. A distribution is not automatically additional income; basis and entity-specific distribution rules determine its consequences. Disregarded-entity activity generally appears directly on the owner's appropriate schedules rather than through a separate federal income-tax entity return. Reconcile ownership, K-1 amounts, distributions, and basis, but do not collapse them into one net figure. Owner-level limitations can change deductibility without changing the K-1's underlying character.
Worked example: A partner receives a K-1 allocating $15,000 ordinary income and $2,000 long-term capital gain but receives only $5,000 cash. The owner generally reports the allocated taxable items, while separately testing how the cash distribution affects outside basis and possible gain.
Common mistake: A pass-through owner is not taxed only on cash distributions, and a distribution is not automatically a second taxable income item.
Official syllabus reference: [1]
33. Adjustments to gross income and self-employed deductions
Adjustments to gross income reduce gross income in arriving at adjusted gross income rather than operating as itemized deductions. Examples can include eligible retirement contributions, health savings account contributions, the deductible portion of self-employment tax, and qualifying self-employed health-insurance deductions. Each has its own eligibility, limitation, and coordination rules. An expense cannot be deducted twice through both business income and an adjustment. AGI matters beyond arithmetic because numerous later deductions and credits use AGI or modified AGI. Classify the deduction correctly before applying limits, and distinguish a contribution's cash amount from the amount currently deductible.
Worked example: A sole proprietor has $60,000 business profit and a separately established $4,000 deductible self-employed health-insurance amount. Assuming all requirements are met, the insurance reduces AGI through its proper adjustment rather than being deducted a second time in computing the same business profit.
Common mistake: An adjustment to income is not an itemized deduction, and paying an eligible expense does not permit duplicate deductions on different schedules.
Official syllabus reference: [1]
34. Medical deductions and qualified residence interest
Medical expenses generally require qualifying expenditures, proper payment and beneficiary facts, and reduction by reimbursements before applying the applicable AGI floor. Only the eligible excess enters the medical itemized deduction. Qualified residence interest depends on the debt, security, use of proceeds, acquisition timing, and applicable limits rather than merely the lender's mortgage label. Home-equity borrowing used for personal consumption does not become deductible residence interest solely because a home secures it. Compare total allowable itemized deductions with the applicable standard deduction, and avoid treating an itemized-deduction calculation as an adjustment that itself lowers AGI.
Worked example: Assume a problem supplies a $6,000 medical floor. A taxpayer pays $10,000 of qualifying expenses and receives $2,000 reimbursement. Unreimbursed expenses are $8,000, producing a $2,000 medical itemized deduction. The floor applies after reimbursement, not to the original cash payments.
Common mistake: A lender's mortgage statement does not establish that every interest dollar qualifies, and reimbursed medical costs do not generate duplicate deductions.
Official syllabus reference: [1]
35. State-tax deductions and personal casualty losses
Itemized tax deductions require classifying the tax and applying the tax year's limitations, including any relevant cap, phaseout, or election. Personal state income taxes and qualifying general sales taxes generally involve an alternative rather than simultaneous deduction of both categories. Business taxes can follow different reporting rules. Personal casualty-loss deductions depend on the applicable year's event-eligibility rules, reimbursement, basis, decline in value, and statutory reductions. A decline in value alone does not establish a deductible casualty. Because these provisions have changed legislatively, determine the effective law rather than reusing a historical cap or disaster restriction without verification.
Worked example: A worksheet lists both state income-tax withholding and general sales taxes as separate personal itemized deductions. The reviewer checks the permitted alternative and current-year limits before computing the deduction. A property-tax item is evaluated separately rather than automatically discarded with one alternative.
Common mistake: Personal state income tax and general sales tax are not ordinarily cumulative alternatives, and every uninsured personal property loss is not deductible.
Official syllabus reference: [1]
36. Qualified business income and taxable-income limitations
The qualified business income deduction generally starts with eligible domestic business income and related deductions rather than total gross receipts or all pass-through income. Investment items and certain service compensation are excluded from QBI under their governing rules. The computation can involve a percentage of QBI, an overall taxable-income limitation reduced for net capital gain, and additional wage, property, specified-service, aggregation, or other applicable limitations. Determine current-year rules and thresholds before applying a simplified formula. The deduction generally reduces taxable income rather than AGI and does not automatically reduce self-employment income merely because it benefits a business owner.
Worked example: Assume eligible QBI is $50,000, the applicable percentage is 20%, and the supplied overall taxable-income limit is $8,000, with no other restriction or minimum provision affecting the result. The QBI component is $10,000, but the allowed deduction is limited to $8,000.
Common mistake: The QBI deduction is not simply a fixed percentage of gross receipts, and it does not generally reduce adjusted gross income.
Official syllabus reference: [1]
37. Capital-loss netting and retained carryforward character
Individual capital-gain computations first net short-term items and long-term items within their categories, then combine the category results under the applicable rules. A net capital loss can offset ordinary income only up to the permitted annual amount, with the remainder carried forward. The carryforward retains short-term or long-term character rather than becoming an ordinary business loss. Special gain categories can require additional rate calculations. A taxpayer cannot choose to preserve a loss that the rules require to offset current capital gain. Distinguish the netting stage from the later limitation on the deduction against ordinary income.
Worked example: A taxpayer has $6,000 short-term gain and $10,000 long-term loss. Netting leaves a $4,000 long-term net loss. If the supplied current ordinary-income deduction limit is $3,000, the taxpayer deducts $3,000 and carries $1,000 forward with long-term character.
Common mistake: The annual ordinary-income deduction limit applies after capital netting, rather than limiting how much loss can offset current capital gains.
Official syllabus reference: [1]
38. Basis, at-risk, passive, and excess-business-loss sequencing
A business loss can encounter several owner-level limitations, each addressing a different concern. Basis limits losses to tax investment recognized under entity rules. At-risk rules test economic exposure, and passive-activity rules generally restrict passive losses against nonpassive income. Material participation addresses passive classification but does not create basis or amount at risk. An applicable excess-business-loss limitation can restrict otherwise allowable business losses after earlier tests. Maintain separate suspended-loss records because later release conditions differ. Apply the correct sequence and current-year provisions rather than treating the most visible limitation as the only one.
Worked example: An actively involved owner has $25,000 basis but only $18,000 at risk for a $30,000 loss. Basis first suspends $5,000; the at-risk test suspends another $7,000. Material participation does not restore those amounts, although it may affect the next passive-activity analysis.
Common mistake: Material participation does not make every business loss deductible; insufficient basis, insufficient amount at risk, and later limitations can still restrict it.
Official syllabus reference: [1]
39. Personal losses, hobbies, and deferred investment losses
A loss's economic reality does not establish its federal deductibility. Loss on sale of personal-use property generally is nondeductible, while gain can remain taxable. An activity lacking the required profit objective follows rules different from a trade or business, including restrictions on deductions that must be evaluated under current-year law. A wash-sale loss presents another mechanism: specified securities losses may be deferred through replacement basis rather than permanently disallowed like a personal-use sale loss. Classify the asset and activity first, then identify whether the restriction eliminates, limits, or postpones the tax benefit.
Worked example: An individual sells a personal bicycle for $800 after buying it for $1,500. The $700 personal-use loss is generally nondeductible. That result differs from a qualifying wash-sale deferral, where a disallowed securities loss can become part of taxable-account replacement basis.
Common mistake: All disallowed losses do not receive the same future treatment; personal-use losses and wash-sale losses arise under different mechanisms.
Official syllabus reference: [1]
40. Marital status and head-of-household qualification
Filing status generally begins with marital status at year-end, subject to specific rules for death and taxpayers considered unmarried. Head of household requires more than being unmarried: the taxpayer must satisfy household-cost and qualifying-person requirements. Residence rules vary by qualifying person, including the special rule for a qualifying dependent parent living separately. Qualifying surviving spouse has its own time-limited and qualifying-child requirements and is not simply a label for any surviving individual. Determine the status from all required facts rather than choosing whichever tax bracket is most favorable or assuming dependency alone settles the question.
Worked example: An unmarried taxpayer pays most costs of a separate home occupied all year by a mother who qualifies as a dependent. The taxpayer evaluates the special parent rule for head of household rather than rejecting that status merely because they maintain separate residences.
Common mistake: Supporting any dependent does not automatically establish head-of-household status, and a qualifying parent need not always share the taxpayer's own home.
Official syllabus reference: [1]
41. Qualifying child versus qualifying relative
Dependency analysis distinguishes qualifying-child tests from qualifying-relative tests. Qualifying-child analysis generally addresses relationship, age, residence, support, and other applicable conditions; the support test asks whether the child provided more than half of the child's own support. Qualifying-relative analysis instead includes a different support test and an applicable gross-income limitation, along with relationship or household requirements and other conditions. Tie-breaker rules can determine who may claim a qualifying child when multiple taxpayers qualify. Dependency for one purpose does not automatically establish every credit or filing-status benefit, because related provisions can impose additional requirements.
Worked example: A college student receives substantial parental support but also has earnings. The preparer does not automatically apply the qualifying-relative gross-income limit. The student's age, enrollment, residence, and self-support facts are first tested under the qualifying-child framework before considering another dependency route.
Common mistake: A child's earnings alone do not necessarily defeat qualifying-child status, and the two dependency categories do not use identical support tests.
Official syllabus reference: [1]
42. Nonrefundable credits, refundable credits, and NIIT
A deduction reduces the income base, while a credit reduces tax subject to its own limitations. A nonrefundable credit generally cannot reduce the relevant tax below zero, although carryforward or ordering provisions may apply. A refundable credit can produce a payment beyond the tax otherwise due when eligibility requirements are met. Net investment income tax is a separate computation generally using the smaller of net investment income or modified AGI exceeding the applicable filing-status threshold. Not all investment receipts or business income receive identical NIIT treatment. Use the correct base, rate, threshold, and credit ordering rather than combining unrelated tax computations.
Worked example: Assume a problem supplies $12,000 net investment income, $7,000 modified-AGI excess, and a 3.8% NIIT rate. The taxable NIIT base is $7,000, producing $266. Multiplying the rate by all investment income would ignore the smaller-base limitation.
Common mistake: A nonrefundable credit does not automatically create a refund, and NIIT does not necessarily apply to every dollar of investment income.
Official syllabus reference: [1]
43. Estimated-tax safe harbors and installment timing
Estimated-tax safe harbors address underpayment penalties rather than the ultimate amount of annual income tax. The usual framework compares a required percentage of current-year tax with an applicable percentage of prior-year tax, subject to eligibility and higher-income rules. Installment timing matters: reaching an annual total late may not eliminate earlier underpayment periods. Withholding can have special timing treatment distinct from estimated payments, and annualized-income methods may help taxpayers with uneven income when properly applied. Determine the applicable year's rules and facts before calculating. A safe-harbor payment does not forgive the remaining balance due on the return.
Worked example: A problem supplies a $9,000 annual safe-harbor target and $12,000 final tax. Timely payments of $9,000 may satisfy the stated penalty protection, but $3,000 remains payable. Paying the full $9,000 only at year-end could require a separate installment-timing analysis.
Common mistake: Meeting an annual safe-harbor amount does not eliminate the final tax balance or automatically cure underpayments in earlier required installments.
Official syllabus reference: [1]
Federal Taxation of Entities (including tax preparation)
44. Permanent versus temporary book-tax differences
A permanent book-tax difference affects book income and taxable income differently without an expected reversal in a later tax period. Qualifying tax-exempt interest and nondeductible federal income tax expense are common examples. A temporary difference reflects timing: an item enters book and tax income in different periods, such as differing depreciation schedules. Classification depends on the underlying rule rather than whether the current adjustment is an addition or subtraction. The return reconciliation explains current taxable income, while financial-statement deferred-tax accounting addresses future tax consequences under its own framework. Do not confuse a temporary return difference with an immediately deductible amount.
Worked example: A corporation deducts $18,000 tax depreciation but records $10,000 book depreciation. The $8,000 current subtraction generally represents a timing difference. By contrast, subtracting qualifying tax-exempt interest reverses book income that will not ordinarily become taxable in a later year.
Common mistake: An addition is not automatically permanent, and a subtraction is not automatically temporary; classification depends on the underlying item's future treatment.
Official syllabus reference: [1]
45. Schedule M-1 and M-3 reconciliation controls
Book-to-tax reconciliation starts with the correct book income measure and adjusts only for differences not already reflected in that starting amount. A book expense disallowed for tax generally requires an addition; book income excluded for tax generally requires a subtraction. When tax depreciation replaces book depreciation, adjust for the difference rather than deducting tax depreciation twice. Review account mappings, supporting schedules, imported totals, and diagnostic exceptions for completeness and accuracy. Schedule M-3 demands more detailed classification than M-1, but neither schedule creates deductions. Tie each adjustment to its source and ensure the final result reconciles to the return.
Worked example: Book income already includes $7,000 depreciation expense, while the tax schedule supports $11,000. The reconciliation subtracts $4,000, not $11,000. The reviewer also checks whether the import mapped the same fixed-asset account twice before accepting an automated depreciation diagnostic.
Common mistake: A reconciliation should adjust the difference embedded in book income, rather than blindly adding every tax deduction as another subtraction.
Official syllabus reference: [1]
46. C corporation taxable income and credit sequencing
A C corporation computes its own taxable income and tax rather than routinely passing ordinary operating income directly to shareholders. Begin with gross income and allowable deductions, then apply relevant special deductions and limitations in their required order. Tax credits generally reduce computed tax, whereas deductions reduce the tax base; their cash value is therefore different. Credit-specific limits and carryover rules can prevent immediate use of the full stated amount. Shareholder distributions require a separate analysis and do not ordinarily become corporate deductions merely because cash leaves the company. Use the applicable tax year's rates and provisions rather than assuming book expense equals tax liability.
Worked example: Assume taxable income is $200,000, the supplied tax rate is 21%, and an unrestricted allowable credit is $5,000. Tax before credits is $42,000 and tax after the credit is $37,000. Deducting the credit from taxable income would produce a different, incorrect result.
Common mistake: A dollar of tax credit is not equivalent to a dollar of deduction, and shareholder distributions are not ordinary corporate operating deductions.
Official syllabus reference: [1]
47. Corporate capital losses and capital-gain offsets
A C corporation generally deducts capital losses only against capital gains, rather than using the individual's annual ordinary-income offset. Unused corporate capital losses follow their own carryback and carryforward rules, including character and timing provisions that require the applicable law. A current net capital loss therefore does not automatically reduce operating taxable income. Classify gains and losses first, net the capital category, and track unused amounts separately from net operating losses. Corporate capital gains also do not ordinarily receive the preferential individual capital-gain rate structure merely because their underlying assets were held long term.
Worked example: A corporation has $90,000 operating income, $8,000 capital gain, and $13,000 capital loss. The capital loss offsets the $8,000 gain, but the remaining $5,000 does not reduce operating income under the ordinary corporate rule. It enters the separate capital-loss carryover analysis.
Common mistake: The individual capital-loss deduction against ordinary income does not apply to a C corporation's remaining net capital loss.
Official syllabus reference: [1]
48. Corporate net operating losses and vintage-specific limits
A corporate net operating loss is a tax-defined amount, not simply a negative book result. Its computation can require modifications and exclusion of items governed by separate limitation systems, including capital losses. Use of an NOL depends on the loss's tax year, carryover rules, taxable-income limitations, and any special restrictions. Different loss vintages can have different treatment, so a single undifferentiated carryforward balance can produce an incorrect deduction. An NOL deduction reduces taxable income when allowed; it is not a credit against tax. Maintain a schedule showing origin year, prior use, remaining balance, and applicable limitation.
Worked example: Assume a problem gives $100,000 taxable income before NOLs, a $90,000 eligible carryforward, and an applicable 80% limitation. The allowable deduction is $80,000, leaving $20,000 taxable income and $10,000 unused carryforward, assuming no other restrictions or ordering complications.
Common mistake: A corporation cannot assume every available NOL fully eliminates current taxable income; origin year and applicable limitations can restrict use.
Official syllabus reference: [1]
49. State nexus and tax-specific jurisdiction
Nexus concerns whether a sufficient connection permits a jurisdiction to impose a particular tax or related obligation, subject to constitutional and statutory constraints. Physical presence can matter, but economic activity can also create obligations under applicable state rules. Income-tax nexus, sales-tax collection nexus, and registration duties are not interchangeable. Federal statutory protections can limit some state net-income taxes for qualifying activities without eliminating every state tax obligation. Identify the tax, state, activity, protection, and effective period. Establishing nexus answers whether the jurisdiction may impose the relevant obligation; apportionment then addresses how much income is assigned there.
Worked example: A corporation has substantial remote sales into a state but no office there. The adviser separately evaluates that state's sales-tax collection rules and income-tax nexus rules, including any applicable federal protection. A conclusion about one tax does not automatically decide the other.
Common mistake: No physical office does not automatically mean no state tax obligation, and sales-tax nexus does not settle every income-tax question.
Official syllabus reference: [1]
50. Apportionment factors versus direct allocation
Apportionment assigns a share of a multistate income pool using the state's prescribed factor or formula. Allocation directly assigns specified income to a jurisdiction under applicable sourcing rules. States differ in income classifications, factor weighting, sales sourcing, and adjustments, so no single formula should be assumed nationally. Compute the apportionable pool, apply the correct factor, and then add or subtract directly allocated items as required. Nexus does not mean the full nationwide income pool belongs in the state. Keep the denominator and numerator consistent with the supplied factor definitions to avoid mixing receipts from different categories.
Worked example: A state uses a supplied 30% factor on $500,000 apportionable income and directly allocates $12,000 additional income there. Assigned income is $150,000 plus $12,000, or $162,000. Applying 30% to the combined $512,000 would incorrectly apportion the directly allocated item.
Common mistake: Directly allocated income is not automatically multiplied by the apportionment factor, and a state's formula should not be assumed universal.
Official syllabus reference: [1]
51. S corporation eligibility, elections, and termination
S corporation status requires an eligible domestic corporation, permitted shareholders, compliance with shareholder-number and one-class-of-stock requirements, and a valid election with required consents. Voting differences do not alone necessarily create a second economic class, but differing distribution or liquidation rights can matter. Partnerships, corporations, and nonresident alien individuals are generally ineligible shareholders, while certain trusts and exempt organizations have specific permitted routes. A disregarded entity is generally analyzed through its owner. A later ownership or capital-structure change can terminate status even when the original election was valid. Distinguish voluntary revocation from termination caused by failed eligibility.
Worked example: An S corporation proposes issuing shares with preferential distribution rights to a new investor. The reviewer evaluates the one-class-of-stock requirement before issuance. Merely calling both interests common stock does not resolve whether their economic rights create a disqualifying second class.
Common mistake: A valid initial S election does not protect status against later ineligible shareholders or disqualifying changes in economic stock rights.
Official syllabus reference: [1]
52. S corporation ordinary income and separate statement
An S corporation computes ordinary business income separately from items whose character or limitations must be determined at shareholder level. Interest, capital gains, charitable contributions, and other required categories are not simply netted into operating profit. Nondeductible expenditures also need distinct identification because they can affect basis without producing a deduction. Review the trial balance, source records, and return mappings to determine whether each item was classified correctly. A diagnostic identifying an unusual account requires factual resolution rather than automatic reclassification. Preserving category detail allows shareholders to apply rates, deduction limits, and basis adjustments accurately.
Worked example: An S corporation has $80,000 operating profit before a $5,000 charitable contribution and earns $2,000 portfolio interest. Ordinary income remains $80,000 under these assumptions, while the contribution and interest are separately stated. Reporting $77,000 ordinary income would lose required category information.
Common mistake: Separately stated items are not optional disclosures; netting them into operating income can change the shareholder's tax treatment and limitations.
Official syllabus reference: [1]
53. Accumulated adjustments account versus shareholder basis
The accumulated adjustments account, or AAA, is an S corporation-level tax account tracking specified undistributed S-period taxable results. It is not a shareholder's investment basis and does not increase for ordinary shareholder capital contributions. Tax-exempt income generally does not increase AAA, although it can increase stock basis. Distributions and net negative adjustments follow ordering rules, and distributions alone generally do not drive AAA below zero. AAA becomes especially relevant when accumulated C corporation earnings and profits affect distribution treatment. Compute AAA and each shareholder's basis separately because identical corporate transactions can affect those records differently.
Worked example: A shareholder contributes $10,000 cash, and the S corporation earns $3,000 tax-exempt interest. Those items can increase stock basis, but neither creates the same AAA increase as taxable operating income. The corporation and shareholder therefore maintain separate reconciliations rather than one interchangeable balance.
Common mistake: AAA is not the sum of shareholders' stock bases, and tax-exempt income does not generally increase it like taxable operating income.
Official syllabus reference: [1]
54. S corporation stock-basis ordering
Stock basis generally increases for contributions and allocated income, including tax-exempt income, then decreases for distributions, nondeductible expenses, and deductible losses under the applicable ordering rules. Elections can alter certain ordering details, so identify whether one applies. Basis cannot fall below zero; unsupported losses are suspended rather than deducted by creating negative basis. A distribution's treatment depends on stock basis and relevant corporate earnings-and-profits facts, not merely total basis including shareholder debt. Keep item character separate from the basis computation. Basis determines capacity for particular consequences but does not replace reporting the underlying income and deduction categories.
Worked example: Beginning stock basis is $14,000. Current income adds $6,000, a cash distribution uses $9,000, and nondeductible expense uses $1,000. Under the stated ordinary ordering, $10,000 remains for losses. A $13,000 loss therefore leaves $3,000 suspended and zero stock basis.
Common mistake: Shareholder debt basis does not generally make a stock distribution tax-free, and deductible losses cannot reduce stock basis below zero.
Official syllabus reference: [1]
55. Shareholder debt basis and loan repayments
S corporation debt basis generally requires bona fide indebtedness running directly to the shareholder under the applicable rules. A shareholder's guarantee of corporate borrowing generally does not create debt basis merely when signed. Losses can reduce qualifying debt basis after available stock basis, and later income can trigger restoration rules. Repayment of debt with basis below its face amount can produce taxable gain; the character depends on the debt and surrounding facts. Track each loan's face amount, adjusted basis, loss reductions, restorations, and repayments. Corporate third-party debt does not automatically give shareholders basis in proportion to ownership.
Worked example: A shareholder directly lends $20,000 to an S corporation, and allowable loss deductions later reduce debt basis to $12,000. A full $20,000 repayment can create $8,000 taxable gain, subject to the applicable rules. Repayment is not automatically tax-free merely because it returns loan principal.
Common mistake: Signing a guarantee does not ordinarily create immediate S corporation debt basis, and repayment of reduced-basis debt can trigger gain.
Official syllabus reference: [1]
56. Partnership guaranteed payments and ordinary income
A guaranteed payment generally compensates a partner for services or capital without regard to partnership income. Its partnership-level treatment depends on whether the expenditure is deductible or must be capitalized, while the recipient reports it under the applicable rules. It differs from an owner's distributive share and from a cash distribution. Partnership ordinary income excludes separately stated items such as capital gains and charitable contributions whose treatment requires partner-level information. Compute the business result using deductible operating costs, including qualifying guaranteed payments, then preserve separately stated categories. Do not infer the tax treatment solely from when cash is paid.
Worked example: A partnership has $100,000 service revenue, $40,000 other deductible costs, and a $15,000 deductible guaranteed payment. Ordinary income is $45,000. The recipient's guaranteed payment is separately reported, while the partnership allocates the $45,000 business result under the applicable allocation rules.
Common mistake: A guaranteed payment is not simply a distribution of partnership profit, and its deduction depends on the underlying expenditure's tax treatment.
Official syllabus reference: [1]
57. Partnership outside basis, inside basis, and liabilities
Outside basis is a partner's tax basis in the partnership interest; inside basis is the partnership's basis in its assets. They measure different investments and need not equal book capital accounts. Contributions, allocated income, deductions, distributions, and qualifying changes in partnership liabilities affect outside basis under applicable rules. A partner's increased share of liabilities generally increases outside basis, while a decrease generally is treated as money distributed. Liability allocation differs for recourse and nonrecourse obligations, so ownership percentage alone is not always sufficient. Basis is necessary for loss deductions but does not automatically establish that the partner is economically at risk.
Worked example: A partner contributes $10,000 cash and is allocated $6,000 of qualifying partnership liabilities under the applicable rules. Outside basis generally begins at $16,000, while the partnership's basis in the contributed cash remains $10,000. The liability allocation does not add another $6,000 asset.
Common mistake: A partner's capital account, outside basis, inside asset basis, and amount at risk are different measures and should not be substituted interchangeably.
Official syllabus reference: [1]
58. LLC default classification and tax elections
A domestic eligible LLC with one owner generally defaults to disregarded status for federal income tax, while one with multiple owners generally defaults to partnership classification. Eligible entities can elect corporate classification, and an eligible corporation can elect S status when requirements are satisfied. Federal tax classification does not eliminate the LLC's state-law existence or automatically change owner liability and governance. Disregarded treatment also does not mean the entity is disregarded for every tax purpose, including certain employment and excise taxes. Identify owner count, eligibility, elections, and effective dates before selecting returns and reporting the activity.
Worked example: A single-owner domestic LLC has made no classification election. Its individual owner generally reports the business activity directly on the appropriate individual-return schedule. If a second owner is admitted, the preparer reevaluates default classification and effective-date consequences rather than continuing the old reporting automatically.
Common mistake: An LLC is not automatically a partnership, and disregarded federal income-tax treatment does not erase its legal existence or every separate tax obligation.
Official syllabus reference: [1]
59. Tax-exempt organizations and unrelated business income
Tax-exempt status depends on the organization's qualifying category, purposes, organization, and operations rather than simply the absence of profit distributions. Charitable, social-welfare, business-league, and other exempt categories have different requirements and consequences; exemption does not automatically make contributions deductible to donors. An exempt organization can owe unrelated business income tax when an activity meets the applicable trade-or-business, regularity, and unrelatedness tests, subject to exclusions and exceptions. Relatedness concerns contribution to the exempt purpose beyond generating money. Information returns and other compliance duties can remain even when no income tax is payable.
Worked example: A charitable organization regularly operates a commercial business unrelated to its educational mission and uses the profits to fund scholarships. The use of the profits does not itself make the business substantially related. The organization evaluates unrelated-business treatment and applicable exceptions separately.
Common mistake: Using commercial profits for a charitable purpose does not automatically make the underlying activity related or eliminate unrelated business income tax.
Official syllabus reference: [1]
60. Partnership cash distributions before loss deductions
A partnership basis worksheet must distinguish the cash-distribution test from the later loss-deduction test. Under ordinary ordering, increase outside basis for taxable and tax-exempt income, then apply distributions, followed by nondeductible expenses and deductible losses. Cash exceeding the basis available at the distribution step generally produces gain. Later deductions cannot retroactively create distribution gain. Deductible losses exceeding the remaining outside basis are suspended under the basis limitation, rather than reducing basis below zero. Track those suspended losses separately for possible deduction when basis becomes available, subject to any other applicable limitations.
Worked example: Ravi begins with $9,000 of outside basis and receives $3,000 of allocated interest income. A $10,000 cash distribution leaves $2,000 without gain. Nondeductible expenses of $1,000 leave $1,000 for a $4,000 ordinary loss: deduct $1,000, suspend $3,000, and end with zero basis.
Common mistake: Reducing basis for losses before testing a cash distribution can manufacture distribution gain and incorrectly allow losses that should remain suspended.
Official syllabus reference: [1]