Develop the calculations and distinctions behind Irish personal and business taxation: adjust trading profits, classify income, apply reliefs, compute gains and reconcile liabilities with payments. This guide contains 20 original practice items and 60 worked concepts, combining multiple-choice decisions with constructed computations and a spreadsheet task. It follows the supplied TX-IRL June 2026–June 2027 syllabus, current as of 16 October 2026, with its 30 September 2025 legislative cutoff. Numerical exercise assumptions are stated explicitly; syllabus citations establish topic relevance rather than independently verifying every technical rule. This representative preview is not a full mock or an official question bank. Its allocations are original, and later legislation or the redesigned qualification requires separate treatment.
What this guide covers
Practise Irish tax computations with 20 original questions and 60 detailed concepts for ACCA TX-IRL.
The Irish tax system and its administration
1. Tax incidence, revenue and capital taxes
Direct taxes charge a person's income, profits or gains; indirect taxes generally attach to transactions or consumption and are collected through suppliers. Revenue taxes concern income or consumption, while capital taxes concern capital gains, transfers or holdings. These classifications describe different dimensions and should not be treated as mutually exclusive lists. Taxation finances public services, redistributes resources and can influence behaviour. The legal person responsible for remitting a tax may differ from the person bearing its economic burden, particularly where prices or wages adjust.
Worked example: A sole trader sells taxable goods and later disposes of an investment at a gain. VAT concerns the supplies, income tax concerns trading income, and capital gains tax concerns the investment disposal. Each charge requires its own base rather than one combined business-receipts calculation.
Common mistake: Assuming the person who transfers money to Revenue necessarily bears the entire economic burden confuses collection responsibility with tax incidence.
Official syllabus reference: [2]
2. Distinguishing legislation, judgments and Revenue guidance
A tax conclusion should identify the authority supporting it. Legislation creates the charge and specifies conditions for deductions, exemptions and collection. Court judgments interpret legislation, with their authority depending on the court and the issue decided. Revenue guidance explains administrative practice and interpretation, but does not itself amend statutory wording. Check that an authority applies to the relevant period and facts. For this examination cycle, the supplied syllabus specifies legislation passed by 30 September 2025; a later website update does not automatically change the examinable position.
Worked example: A computation concerns an expense that the applicable statute excludes. A general Revenue webpage describes business expenses as deductible but does not address that exclusion. The expense remains disallowed: the specific statutory restriction governs the computation.
Common mistake: Treating a guidance summary as permission to disregard a specific statutory restriction confuses administrative explanation with the legal basis of the tax charge.
Official syllabus reference: [2]
3. Avoidance, evasion and correcting false information
Tax planning uses available statutory choices and reliefs within their conditions. Avoidance generally seeks a tax advantage through arrangements exploiting legal form; evasion involves unlawful conduct such as concealing receipts or knowingly submitting false information. An accountant must distinguish an uncertain interpretation from inaccurate underlying facts. Establish the transaction, identify the relevant treatment and communicate the correction needed. Confidentiality does not justify preparing a return known to be false. Detailed anti-avoidance legislation is excluded from this syllabus, so the core task is recognising the distinction and responding professionally.
Worked example: A client has omitted €8,000 of cash sales but calls the omission planning. The receipts are trading income, so the accountant calculates the omitted taxable profit and advises correction. This differs from claiming a genuine capital allowance supported by an eligible asset purchase.
Common mistake: Calling an omitted receipt a disputed interpretation does not transform a knowingly false factual return into legitimate tax planning.
Official syllabus reference: [2]
4. Self-assessment, ROS and supporting records
Self-assessment requires the taxpayer to identify taxable sources, calculate the liability, submit the relevant return and pay tax without waiting for Revenue to discover it. ROS supports electronic filing, payments and access to tax records. The computation should reconcile accounts and source documents to the return, retaining evidence for deductions, allowances and payments. Tax records are generally retained for six years, with longer retention potentially necessary where an enquiry or another obligation remains unresolved. Filing an electronic return does not itself prove payment or validate the underlying calculation.
Worked example: A consultant reconciles invoices to bank receipts, adjusts accounting profit, records capital allowances and submits the return through ROS. She separately checks the payment acknowledgement and retains invoices, asset records and the computation so that the reported figures can be reconstructed.
Common mistake: Keeping only the final return loses the evidence needed to explain adjustments, establish allowable expenditure and reconcile tax payments.
Official syllabus reference: [2]
5. Individual pay-and-file dates and preliminary tax
The ordinary statutory pay-and-file date for a self-assessed individual is 31 October. At that date, the individual normally files the preceding year's return, pays its balance and pays preliminary tax for the current year. Standard preliminary-tax bases are 90% of current-year liability or 100% of preceding-year liability; a conditional direct-debit alternative uses 105% of the pre-preceding year's liability. An announced ROS extension must be established rather than assumed. Preliminary payments reduce the eventual balance but do not determine the final liability or remove the filing obligation.
Worked example: At 31 October Year 3, a trader files Year 2, whose liability is €20,000 with €17,000 already paid. She pays the €3,000 balance and, using the 100% previous-year basis, €20,000 preliminary tax for Year 3: total €23,000.
Common mistake: Paying the previous year's balance without separately addressing current-year preliminary tax leaves one of the ordinary pay-and-file obligations unmet.
Official syllabus reference: [2]
6. Small and large company preliminary-tax timetables
A small company's preceding-period corporation tax, annualised for classification, does not exceed €200,000. Its preliminary payment is generally the lower safe basis of 100% preceding-period tax or 90% current-period tax. Larger companies generally pay first in month six: 50% preceding-period tax or 45% current-period tax; the month-eleven payment brings cumulative tax to 90% current liability. For ROS filers, these payments ordinarily fall on the 23rd, with the final preliminary payment at least 31 days before period-end. CT1 and the balance ordinarily fall nine months after period-end, by the 23rd for ROS.
Worked example: A December year-end company's preceding twelve-month tax was €240,000, making it large. Estimated current tax is €300,000. Using preceding tax first, it pays €120,000 on 23 June and €150,000 on 23 November, reaching €270,000. Final €30,000 and CT1 are due by 23 September next year.
Common mistake: Using current profits alone to classify company size overlooks the preceding-period tax test, while paying 90% twice overstates the instalments.
Official syllabus reference: [2]
7. Qualifying disclosures and intervention timing
A qualifying disclosure is more than notifying Revenue that an error exists. It must give complete relevant particulars, quantify tax and interest, satisfy the required declaration and payment arrangements, and meet timing conditions. A disclosure made before notification of a relevant audit may be unprompted; one made after notification but before the audit starts may be prompted, if qualifying conditions are met. Later discoveries do not automatically receive either treatment. Disclosure can affect penalties and publication consequences, but ordinarily does not eliminate the underlying tax or interest. Deliberate and careless behaviour require separate analysis.
Worked example: Before any intervention notification, a retailer discovers omitted taxable sales, submits full written particulars and the required declaration, and pays the quantified tax and interest. Assuming all qualifying conditions are satisfied, this is an unprompted qualifying disclosure, rather than merely an informal admission.
Common mistake: Assuming any voluntary telephone admission qualifies ignores completeness, payment, declarations and the intervention stage that determines available disclosure treatment.
Official syllabus reference: [2]
8. Appeals, late filing and daily interest
A disputed assessment and an unpaid liability create different issues. An appeal normally requires a valid notice to the Tax Appeals Commission within the applicable statutory period, commonly 30 days for an assessment appeal. Identify the disputed decision and grounds rather than simply withholding payment. Late filing can trigger surcharges and restrictions on reliefs; late payment can produce daily interest independently. Calculate interest using the relevant tax-specific daily rate and actual overdue days. Do not infer that a successful procedural step suspends every payment obligation or that one penalty replaces another.
Worked example: An exercise specifies €12,000 overdue for 40 days at a daily interest rate of 0.02%. Interest is €96. A separate appeal concerns the assessment's taxable-profit adjustment; calculating interest neither resolves that substantive dispute nor constitutes a valid appeal against it.
Common mistake: Subtracting a filing surcharge from interest treats separate compliance consequences as alternatives even though both can arise from the same return.
Official syllabus reference: [2]
Income tax liabilities
9. Residence, ordinary residence and domicile
Residence generally requires 183 Irish days in one tax year or 280 across that year and its predecessor; a year with 30 days or fewer does not establish residence under the combined test. Ordinary residence begins after three consecutive resident years, from the fourth, and ends after three consecutive non-resident years. Resident, Irish-domiciled individuals generally face worldwide income taxation. Non-domiciled residents may obtain remittance treatment for qualifying foreign income. Non-resident ordinary residents retain wider exposure, subject to exceptions for wholly foreign trades, wholly foreign-duty employment and limited other foreign income. Domicile concerns permanent home, not citizenship.
Worked example: An Irish-domiciled individual spends 190 days in Ireland and receives UK rent plus salary for duties performed in Dublin. Residence is established by the single-year test. Both the UK rent and Irish-duty salary enter Irish taxable scope; keeping the rent abroad does not create remittance treatment.
Common mistake: Equating a foreign bank account with exemption overlooks residence and domicile, which determine whether remittance treatment is available at all.
Official syllabus reference: [2]
10. Employment status and the badges of trade
Employment status depends on the real working relationship, including personal service, control and whether the worker operates an independent business. Contract labels and invoicing are evidence, not a complete answer. Separately, the badges of trade help distinguish trading transactions from investment disposals: subject matter, holding period, frequency, supplementary work, circumstances of sale and profit motive all contribute. No single badge resolves every case. Status determines the appropriate income source, deduction rules and collection mechanism; the badges determine whether an apparent asset transaction has the character of a trade.
Worked example: A person repeatedly buys damaged bicycles, repairs them and advertises them for resale. Short ownership, repeated transactions and improvement work support trading income. Selling a personal bicycle after years of use presents a different pattern, even if the sale unexpectedly produces a profit.
Common mistake: Treating every profitable disposal as trading ignores investment ownership, while accepting an invoice label alone can misclassify an employment relationship.
Official syllabus reference: [2]
11. Employment remuneration, benefits and expenses
Employment income includes salary, bonuses and taxable benefits, measured under the relevant benefit valuation rules. PAYE collects tax but does not determine the underlying amount assessable. Expense deductions are narrower than the general trading-expense test: employment expenses normally require the applicable wholly, exclusively and necessarily incurred standard or a specific statutory deduction. Ordinary home-to-work travel is generally private, whereas qualifying travel in performing duties can receive different treatment. Employer reimbursements must be classified before inclusion or exemption. Approved mileage arrangements do not convert a private journey into qualifying business travel.
Worked example: An employee receives €48,000 salary and a benefit valued at €3,000. A specifically deductible professional subscription is €400. Assessable employment income is €50,600. An exempt reimbursement for a documented qualifying client visit adds nothing, while ordinary commuting costs receive no deduction.
Common mistake: Deducting every work-related payment from salary imports the broader business-expense approach into employment income without testing the stricter conditions.
Official syllabus reference: [2]
12. Share-option gains and termination exemptions
An ordinary employment share option can produce an employment gain when exercised, generally measured by share value less the exercise price and any option cost. A subsequent disposal is a separate capital-gains event, using an appropriately established acquisition cost. Short and long options require their specified timing treatment. Termination receipts must first be divided between contractual remuneration and potentially qualifying ex-gratia payments. For qualifying receipts, compare applicable basic exemption, increased exemption and standard capital superannuation benefit, observing pension interactions. The largest permitted exemption is not an entitlement to combine all alternatives.
Worked example: An employee exercises an ordinary option over 1,000 shares worth €9 each, paying €5 per share and no option premium. The employment gain is €4,000. A later sale requires a separate gains calculation; it is not simply another employment charge on all sale proceeds.
Common mistake: Treating every termination payment as exempt or charging a later share sale entirely as salary overlooks distinct income and capital mechanisms.
Official syllabus reference: [2]
13. Revenue expenses, capital expenditure and pre-trading costs
Trading profit starts with accounts and is adjusted to tax rules. Deduct expenditure incurred wholly and exclusively for the trade, subject to specific restrictions; add back private costs, capital expenditure and accounting depreciation. A repair restores an asset, while an improvement can create capital value requiring different relief. Qualifying pre-trading revenue expenditure incurred within the permitted three-year period can generally be treated as incurred on commencement when it would have been deductible after commencement. Qualifying artists' income has a specific exemption subject to conditions and a cap, rather than a general exemption for creative businesses.
Worked example: A designer pays €2,400 for qualifying advertising six months before commencing, then charges €5,000 depreciation and €900 private travel in the first accounts. The advertising can qualify as a commencement expense, while depreciation and private travel are added back before calculating capital allowances.
Common mistake: Assuming an expense is deductible because it appears in business accounts ignores private purpose, capital character and specific statutory restrictions.
Official syllabus reference: [2]
14. Commencement and cessation basis-period reviews
On commencement, the first tax year is assessed on actual profits from commencement to 31 December. Where the second year contains the first normal twelve-month accounting date, that year's assessment uses those twelve months; special rules address other accounting patterns. If the second-year assessment exceeds actual second-calendar-year profits, commencement relief can reduce the third-year assessment by the excess. On permanent cessation, the final year uses actual profits from 1 January to cessation. Review the penultimate year upwards where its actual calendar-year profit exceeds the original assessment. Time-apportion profits only where the facts justify even accrual.
Worked example: A trade starts on 1 July Year 1. First June accounts show €120,000; the next show €40,000, accruing evenly. Assess Year 1 at €60,000 and Year 2 at €120,000. Actual Year 2 profit is €80,000, so €40,000 commencement relief reduces Year 3's €40,000 basis to nil.
Common mistake: Using the accounting profit automatically in every tax year misses commencement overlap relief and the compulsory upward review on cessation.
Official syllabus reference: [2]
15. Wear-and-tear allowances and balancing adjustments
Capital allowances replace accounting depreciation for qualifying assets. Establish ownership, qualifying use, expenditure and the relevant asset category before applying the statutory allowance. Plant and machinery commonly receive straight-line wear-and-tear allowances; motor cars can involve emissions-based restrictions and expenditure limits. Private use restricts the business entitlement. On disposal, compare tax disposal value with tax written-down value to identify a balancing allowance or charge, subject to applicable limits. Industrial and farm buildings use their own qualifying expenditure, rates and adjustment rules. Neither land cost nor all expenditure on premises automatically qualifies.
Worked example: Assume machinery costs €40,000 and receives two annual allowances of 12.5%, leaving tax written-down value of €30,000. A qualifying disposal for €24,000 produces a €6,000 balancing allowance under the exercise assumptions, distinct from any accounting loss based on book depreciation.
Common mistake: Using accounting net book value for a balancing adjustment substitutes financial-reporting depreciation for the separate tax written-down value.
Official syllabus reference: [2]
16. Farming income averaging and stock relief
Farming income averaging replaces a single year's fluctuating farming result with the average over the prescribed period, generally five years, where the qualifying conditions and election apply. It changes timing rather than exempting the underlying farming business. Stock relief gives a separate deduction calculated from a qualifying increase in trading-stock value at the applicable rate. Establish eligibility, opening and closing stock, and restrictions before combining reliefs. Farm losses, special rates for qualifying farmers and farm-building allowances remain distinct mechanisms. A higher closing stock value is not automatically an immediately taxable cash receipt.
Worked example: Assume eligible five-year profits are €20,000, €30,000, €10,000, €50,000 and €40,000. Their average is €30,000. Separately, a qualifying €8,000 stock increase at an assumed 25% stock-relief rate gives a €2,000 deduction under the exercise's stated ordering and eligibility assumptions.
Common mistake: Subtracting the entire stock increase instead of the prescribed relief percentage confuses stock valuation with the amount of the tax deduction.
Official syllabus reference: [2]
17. Separating qualifying artistic profits from other earnings
Artists' exemption concerns qualifying profits from eligible original creative works, subject to the required Revenue determination, eligibility conditions and annual limit. It does not exempt every receipt earned by someone who works as an artist. Separate income from the qualifying work from teaching, commercial services and other activities, and allocate related expenses appropriately before applying the exemption to profits. Any qualifying profit above the applicable limit remains taxable. The income-tax exemption does not automatically remove USC or PRSI obligations, which require separate consideration under their own rules.
Worked example: Assume an eligible writer has the required determination, qualifying book profits of €60,000 and taxable teaching profits of €10,000. Using a stipulated €50,000 exemption limit, exempt profits are €50,000; €20,000 remains taxable before other reliefs.
Common mistake: An artist's professional identity does not exempt unrelated earnings, and an exemption applied to qualifying profits should not be calculated directly from gross receipts.
Official syllabus reference: [2]
18. Partnership allocations, PSWT and RCT credits
A partnership computes business profit, then allocates it to partners under the applicable profit-sharing arrangements and assessment rules. A change in ratio requires the relevant periods to be separated; cash drawings do not determine taxable shares. Professional services withholding tax and relevant contracts tax are collection mechanisms rather than deductions reducing gross business income. Record the gross receipt and consider the withheld amount as a credit or repayment subject to the relevant rules. PSWT applies to specified professional payments by accountable persons; RCT concerns relevant contracts and requires its own classification and reporting analysis.
Worked example: A partnership earns €80,000 evenly. Partners share equally for six months, then 75:25 for six months. Their shares are €50,000 and €30,000. If a qualifying customer withholds tax from a fee, the partnership still records the gross fee before allocating profit.
Common mistake: Allocating only cash received after withholding understates trading receipts and can also cause the associated tax credit to disappear.
Official syllabus reference: [2]
19. Rental computations, short premiums and rent-a-room relief
Rental income is computed from gross taxable receipts less permitted rental expenses, with separate treatment for capital allowances and rental deficiencies. Repairs can qualify where improvements do not; interest requires the applicable conditions. Rental losses are generally carried forward against rental profits rather than freely offset against employment. A short-lease premium can create an income charge using the statutory reduction for complete years after the first. Rent-a-room relief is conditional and threshold-based: exceeding its limit can make the whole relevant receipt taxable. It is not a general annual deduction from every property's rent.
Worked example: Assume rent of €18,000, allowable expenses of €5,000 and qualifying furniture allowances of €2,000. Taxable rental income is €11,000. An unrelated €3,000 employment expense cannot be inserted into this property computation, and a separate rental deficiency requires the rental-loss rules.
Common mistake: Deducting a rent-a-room limit from ordinary investment rent mistakes a conditional exemption for an allowance available to every landlord.
Official syllabus reference: [2]
20. Gross investment income and withholding credits
Investment income must be classified before applying rates and credits. Irish dividends are normally considered gross of dividend withholding tax, with the withholding credited against the recipient's liability. Deposit interest can have a distinct final-rate treatment and exemptions, so it should not automatically be taxed like dividends. Certain savings products are exempt under their specific conditions. UK interest, dividends, rents, royalties and pensions require source and residence analysis within this syllabus. Detailed double-taxation relief and underlying foreign-dividend tax credits are excluded; do not manufacture a foreign-tax credit merely because withholding occurred abroad.
Worked example: Assume a dividend is received net at €750 after 25% withholding. Gross income is €1,000, not €937.50. At an assumed 40% income-tax charge, tax is €400 and the €250 withholding credit leaves €150 before any other relevant personal credits.
Common mistake: Adding the withholding percentage to the net receipt fails to reconstruct gross income because the percentage applies to the gross dividend.
Official syllabus reference: [2]
21. Income deductions, rate bands and tax credits
A comprehensive income-tax computation first establishes each source's taxable amount, aggregates income and applies eligible income deductions or charges. Rates then apply to taxable income, using the individual's available standard-rate band. Tax credits reduce the resulting tax rather than the income base. Payments such as PAYE and preliminary tax are reconciled afterwards. Restricted-rate income and source-specific withholding require separate attention. A marginal-rate deduction saves tax at the rate applying to the income it removes, whereas a fixed credit generally gives its stated tax reduction, subject to availability and non-refundability.
Worked example: Assume €60,000 income, a €4,000 deductible contribution, a €40,000 band at 20%, and 40% thereafter. Taxable income is €56,000 and gross tax €14,400. A €3,000 credit reduces this to €11,400; €9,000 PAYE then leaves €2,400 payable.
Common mistake: Subtracting PAYE from income before applying tax rates confuses an amount already paid with a deduction establishing taxable income.
Official syllabus reference: [2]
22. Pension relief and married-couple assessment choices
Personal pension relief is constrained by qualifying earnings, age-related contribution percentages, an earnings ceiling and the individual's pension circumstances. It generally reduces income tax rather than automatically reducing USC or PRSI. Occupational contributions require their own treatment. For spouses and recognised civil partners, joint assessment permits specified transfers of bands and credits; separate assessment and separate treatment differ in allocation and transfer consequences. The additional dual-income standard-rate band is restricted by the lower earner's income and is not freely transferable. Year-of-marriage relief compares qualifying married treatment for the relevant period with the actual separate charges.
Worked example: Assume eligible earnings of €50,000 and an applicable contribution limit of 20%. A €12,000 personal contribution gives at most €10,000 current relief before other restrictions. A couple considering joint assessment must separately establish which credits and band amounts can actually transfer.
Common mistake: Assuming marriage permits every unused credit, rate-band amount and pension limit to transfer ignores restrictions tied to the individual earner.
Official syllabus reference: [2]
Corporation tax liabilities
23. Company residence, territorial scope and accounting periods
An Irish-resident company is generally within corporation tax on worldwide profits, whereas a non-resident company is generally charged on relevant Irish branch or agency trading profits and connected income or gains. Other Irish-source amounts can require separate treatment. Residence involves incorporation rules, central management and control, and applicable treaty exceptions; registration alone is not the complete analysis. A corporation-tax accounting period cannot exceed twelve months and can end on events such as cessation or a change of residence. Longer financial accounts therefore require separate tax periods and appropriate profit allocation.
Worked example: Assume an Irish-resident company earns €100,000 from an Irish trade and €30,000 from a UK trade. Both enter its worldwide taxable scope before applicable adjustments. A non-resident company with only the €100,000 qualifying Irish branch trade generally brings that branch profit into corporation tax.
Common mistake: Assuming foreign trading profits are outside Irish corporation tax solely because they arise abroad overlooks the resident company's worldwide-profit charge.
Official syllabus reference: [2]
24. Corporate trading adjustments and pre-trading relief
Corporate trading income begins with accounting profit after separating income belonging to other tax categories. Add back disallowable expenses, capital items charged as expenses and depreciation; retain allowable revenue costs and deduct qualifying capital allowances separately. Client entertainment restrictions and the distinction between repairs and improvements commonly affect the adjustment. Qualifying pre-trading expenditure incurred within the permitted period can be treated as incurred when the trade commences if it would have been deductible afterwards. A company's payment is not automatically a trading expense simply because directors authorised it or it appears in the business accounts.
Worked example: A company reports €90,000 trading accounting profit after €6,000 depreciation and €2,000 disallowable entertainment. Adjusted profit before allowances is €98,000. A qualifying €3,000 pre-trading advertising deduction, not previously charged, reduces that amount to €95,000 before capital allowances.
Common mistake: Adding back every unusual expense rather than testing its tax character can disallow genuine revenue costs and overstate trading profit.
Official syllabus reference: [2]
25. Corporate capital allowances and industrial buildings
Companies claim capital allowances on qualifying expenditure rather than accounting depreciation. Plant and machinery require asset eligibility and qualifying use; industrial buildings require a qualifying building and activity, not merely commercial ownership. Separate land, non-qualifying structures and qualifying construction expenditure. A second-hand building's allowance depends on the applicable remaining tax history, not a fresh unrestricted write-off of its purchase price. Disposal can trigger a balancing adjustment within the relevant rules. Keep the asset's allowance history and tax written-down value distinct from its accounting carrying amount and any separate capital-gains base cost.
Worked example: Assume qualifying plant costs €80,000 and the exercise grants an annual allowance of 12.5%. The tax allowance is €10,000 even if accounting depreciation is €16,000. Add back €16,000 in the profit adjustment and deduct €10,000 separately, increasing taxable profit by €6,000 overall.
Common mistake: Deducting capital allowances while leaving accounting depreciation in expenses grants duplicate relief for the same asset's consumption.
Official syllabus reference: [2]
26. Corporate rental deficiencies and excess allowances
Corporate rental income is calculated separately from trading income, deducting permitted property expenses and relevant rental capital allowances in their proper order. A rental deficiency is not automatically a trading loss and generally carries forward against rental income. Excess rental capital allowances must likewise be tracked under their specific relief rules, rather than disappearing or becoming an unrestricted trading deduction. The distinction matters because rental income and trading income can bear different rates. Keep a schedule of rental receipts, allowable expenses, allowances used and amounts carried forward so later-year relief does not exceed the remaining entitlement.
Worked example: A company has €3,000 net rent before €5,000 qualifying rental allowances. Use €3,000 allowances to reduce current rental income to nil and carry the €2,000 excess forward under the rental-allowance rules. With €6,000 rental income next year and no new allowances, €4,000 remains taxable.
Common mistake: Offsetting excess rental allowances against trading profit without a permitted claim confuses separate sources and can give relief at the wrong stage.
Official syllabus reference: [2]
27. Corporate trading-loss order and tax-value relief
Corporate trading losses can receive current-period, preceding-period or carry-forward relief under their respective conditions. Same-trade income relief and value-based relief against other income must be distinguished: a trading loss should not automatically shelter higher-rate income euro for euro. Carry-forward generally preserves the loss against future income of the same trade. Terminal provisions concern final trading losses and specified earlier periods. Compare immediate cash recovery, available profits, rate differences and future use. Late corporation-tax returns can restrict relief claims, so a substantively genuine loss does not guarantee unrestricted surrender or current-period relief.
Worked example: Assume an eligible €20,000 trading loss has a 12.5% relief value and can be claimed against tax on rental income. It supplies €2,500 of relief, not a €20,000 deduction from income taxed at 25%. The claim's cash value therefore requires a tax calculation.
Common mistake: Comparing loss claims only by the nominal profit relieved ignores different tax rates and the distinction between income deductions and tax-value relief.
Official syllabus reference: [2]
28. Withholding from annual interest paid by a company
When a company's annual interest payment falls within a withholding requirement, distinguish the gross obligation, the tax retained and the cash paid to the lender. Establish whether an exemption applies before calculating withholding. Otherwise, multiply gross interest by the applicable withholding rate and pay the lender the balance. The company accounts to Revenue for the retained tax. Withholding does not itself establish deductibility: the gross interest must separately satisfy the relevant corporation-tax rules. Where deductible, it is the gross expense, rather than just the lender's net receipt, that enters the computation.
Worked example: Assume €9,000 annual interest is fully deductible and subject to 20% withholding, with no exemption. The company pays the lender €7,200 and accounts for €1,800 to Revenue. Its deductible interest remains €9,000, rather than the €7,200 cash received by the lender.
Common mistake: Deducting only net interest understates the expense; treating the withholding as an additional expense counts part of the same gross obligation twice.
Official syllabus reference: [2]
29. Separate corporate income rates and gains conversion
A corporation-tax computation separates trading income, non-trading income and chargeable gains before applying the appropriate treatment. Trading income generally bears the trading rate, while passive rental income generally bears the higher non-trading rate. Ordinary corporate chargeable gains are incorporated through a conversion that preserves the capital-gains effective rate; development-land gains require separate treatment. Irish dividend exemptions and relevant reliefs must be identified before aggregation. A single blended rate applied to accounting profit obscures source adjustments, losses and exemptions. Preliminary tax is then deducted from liability solely to establish the payment balance.
Worked example: Using exercise rates of 12.5%, 25% and 33%, a company with €100,000 trading income, €20,000 rent and €10,000 ordinary gains incurs €12,500, €5,000 and €3,300 respectively. The €20,800 total is reconciled with payments after, rather than before, these source-specific charges.
Common mistake: Taxing ordinary corporate gains directly at the trading rate without the required conversion understates their intended capital-gains tax burden.
Official syllabus reference: [2]
30. Start-up company relief and marginal restriction
Start-up company relief applies only to qualifying new companies and qualifying trades within the relevant statutory window. It does not exempt every receipt of a newly incorporated company. The relief can be limited by corporation-tax thresholds and qualifying employer PRSI, with marginal relief between specified limits. Income outside the qualifying trade requires separate treatment. Establish commencement, eligible activity, relevant period, tax before relief and the employment-linked ceiling before determining the reduction. Use the examinable version's duration and thresholds rather than importing later extensions, and distinguish relief from the separate preliminary-tax concession for qualifying new small companies.
Worked example: Assume an eligible company has €18,000 tax attributable to its qualifying trade and a €12,000 employment-linked relief ceiling, with no marginal restriction. Maximum relief is €12,000, leaving €6,000. Calling the company a start-up does not justify eliminating the remaining tax or unrelated rental tax.
Common mistake: Treating start-up relief as automatic tax exemption ignores qualifying-trade conditions, period limits and the employment-linked cap on the amount relieved.
Official syllabus reference: [2]
31. Franked investment income and dividend withholding
Irish-company dividends received by another Irish-resident company are generally exempt franked investment income rather than trading receipts. Their exemption does not mean every distribution can be ignored for all relief tests. A company paying dividends must separately consider dividend withholding tax and any valid recipient exemption. RCT on subcontract payments and withholding on interest, annual payments or royalties involve different triggers and exemptions. Recognise gross amounts, withholding liabilities and recipient credits separately. Deductibility for the payer, exemption for the recipient and freedom from withholding are three distinct questions requiring their own conditions.
Worked example: Assume a company declares a €20,000 gross dividend and 25% withholding applies without exemption. It pays the shareholder €15,000 and remits €5,000. The dividend is a distribution, not a trading expense, so the withholding does not generate a deduction from corporate trading profit.
Common mistake: Deducting dividend payments from trading profit confuses distributions of after-tax profit with expenses incurred in earning that profit.
Official syllabus reference: [2]
32. The 75% trading-loss group tests
Trading-loss group relief generally requires a 75% relationship in ordinary share capital and at least 75% beneficial entitlement to distributable profits and assets on winding up. Indirect holdings and economic rights must be examined, alongside qualifying residence conditions. Companies cannot establish eligibility from voting influence alone. A valid surrender and claim transfer qualifying amounts, not the companies' entire profit histories. Where accounting periods or group membership overlap only partly, restrict both surrenderable loss and claimant profits to the relevant overlap, ordinarily by time apportionment unless the facts require another justifiable allocation.
Worked example: An Irish parent owns 80% of a subsidiary's shares, profits and winding-up assets. For six qualifying months, evenly accrued annual loss of €100,000 and profit of €60,000 restrict to €50,000 and €30,000. Maximum group relief is €30,000, leaving claimant profit of €30,000.
Common mistake: Checking only share ownership and surrendering the full annual loss overlooks economic-entitlement tests and the claimant's restricted overlapping profit.
Official syllabus reference: [2]
33. Capital-gains groups and inherited base cost
A capital-gains group has its own definition and must not be assumed from trading-loss group membership. The structure generally involves a principal company and qualifying 75% subsidiaries, with effective economic-entitlement requirements, including the relevant greater-than-50% interest through chains. Qualifying intra-group transfers can occur on a no-gain/no-loss basis, preserving the transferor's tax cost rather than substituting an internal sale price. Relief defers recognition within the group; it does not erase the historic gain. Residence and asset conditions still matter. The syllabus excludes the specified charge when a company later leaves the group.
Worked example: Assume a qualifying group company transfers land with tax cost €70,000 and market value €110,000 to another member. No immediate gain arises under the stated relief. If the recipient later sells externally for €130,000, its inherited €70,000 cost produces €60,000 before other adjustments.
Common mistake: Using the internal market value as a fresh base cost converts a deferral into an unintended permanent exemption for the accrued gain.
Official syllabus reference: [2]
34. Payment groups differ from loss groups
Group status for interest and royalty payment provisions serves a different purpose from loss surrender or capital-gains transfers. A 51% group relationship generally concerns a greater-than-50% ordinary-share-capital connection, including relevant indirect ownership. That relationship alone does not establish every withholding exemption: residence, payment type and the particular statutory provision must also qualify. Determine the exact relief being claimed before choosing the ownership test. A payment exemption concerns collection at source, while the recipient's substantive tax charge and the payer's deduction remain separate. Do not substitute a trading-loss group's 75% test automatically.
Worked example: A parent owns 60% of a subsidiary's ordinary shares. That holding can satisfy a greater-than-50% payment-group relationship but fails the ordinary 75% trading-loss ownership test. An interest payment still requires the payment-specific residence and exemption conditions before the payer omits withholding.
Common mistake: Calling two companies a group without identifying the relevant provision can apply the wrong ownership threshold and grant an unavailable relief.
Official syllabus reference: [2]
Chargeable gains
35. Taxable disposals and non-resident specified assets
Capital-gains taxation concerns disposals, which include sales and many gifts rather than only cash receipts. Residence, ordinary residence and domicile determine an individual's territorial exposure and possible remittance treatment. Non-residents can remain chargeable on specified Irish assets, including Irish land and relevant land-related interests, and assets associated with an Irish branch trade. Certain assets or transactions are exempt under specific rules. Identify taxpayer, asset, disposal and territorial connection before calculating a gain. A foreign purchaser, overseas payment account or lack of sale consideration does not independently remove an otherwise chargeable Irish disposal.
Worked example: A non-resident individual sells an Irish investment property and receives payment abroad. Irish land remains within the relevant specified-asset charge. The gain must therefore be computed from consideration and allowable expenditure; the overseas location of the bank account does not exempt it.
Common mistake: Assuming non-residence excludes every Irish capital gain overlooks the continuing charge on specified assets and relevant Irish business assets.
Official syllabus reference: [2]
36. Allowable cost, enhancement and frozen indexation
A gain generally equals disposal consideration less allowable acquisition cost, incidental acquisition and disposal expenses, and qualifying enhancement expenditure still reflected in the asset at disposal. Routine maintenance already deducted against income cannot be deducted again. Indexation can adjust qualifying historic expenditure only under the applicable rules, with Irish relief frozen at the end of 2002; it does not follow later inflation. Restrictions prevent indexation from creating or increasing certain losses. Development land requires particular care because development value and the restricted indexation treatment can differ from an ordinary investment-asset calculation.
Worked example: Assume proceeds of €100,000, allowable original cost of €50,000, qualifying enhancement of €8,000 and sale fees of €2,000, with no indexation. The gain is €40,000. Previously deducted repair expenditure remains outside the capital computation, preventing a second deduction for the same cost.
Common mistake: Applying today's inflation to every historic cost invents indexation beyond its frozen endpoint and can distort both gains and allowable losses.
Official syllabus reference: [2]
37. Connected persons and part-disposal allocation
A gift or non-arm's-length disposal can substitute market value for actual consideration, particularly between connected persons. Connected-person losses can be restricted to gains on disposals to the same connected person, rather than joining unrestricted capital losses. Transfers between spouses or civil partners may instead receive specific no-gain/no-loss treatment where conditions apply. For part disposals, allocate common original expenditure using A divided by A plus B, where A is disposal consideration and B is the retained part's market value. Directly attributable expenses require separate attention and are not automatically apportioned.
Worked example: An investor sells part of land for €40,000 and retains land worth €60,000. Original common cost is €50,000. Allocated cost is €20,000, leaving €30,000 attached to the retained land. This avoids using all the acquisition expenditure against the first partial sale.
Common mistake: Using physical area instead of relative values for every part disposal ignores the statutory allocation mechanism and differences in each part's value.
Official syllabus reference: [2]
38. Carrying acquisition cost through a qualifying share exchange
A qualifying paper-for-paper exchange can defer recognition of a gain when replacement shares stand in place of the original shares. Establish that the exchange satisfies the relief conditions rather than assuming every takeover qualifies. For an exchange involving only qualifying replacement shares, the original allowable acquisition cost carries into the replacement holding; its market value at the exchange does not become a fresh deductible cost. A later taxable disposal therefore captures the deferred appreciation. Cash consideration or other non-qualifying elements require separate analysis and should not automatically receive the same treatment.
Worked example: Assume a qualifying exchange replaces 500 shares costing €6,500 with 1,000 new shares worth €11,000, with no cash received. No gain is recognised on exchange. A later sale for €12,000 produces a €5,500 gain before other deductions or reliefs.
Common mistake: Using the replacement shares' exchange-date market value as their cost would erase the deferred gain instead of preserving it for a later disposal.
Official syllabus reference: [2]
39. Principal private residence occupation fractions
Principal private residence relief links the gain to qualifying ownership and occupation. Actual residence, qualifying deemed absences and the final permitted ownership period can create exempt months, but overlapping periods count only once. Non-qualifying letting can leave a taxable fraction. Exclusive business use may require a separate restriction, while mixed use needs careful factual allocation. Where sale proceeds reflect development potential, full relief cannot simply be applied to the entire gain without considering the development-value rules. Establish ownership dates, occupation periods and relevant use before applying the fraction to the appropriate gain.
Worked example: Assume ownership of 120 months, actual qualifying residence of 84 months and a separate final 12 qualifying months. On a €150,000 gain, relief is €120,000 using 96/120. The remaining €30,000 proceeds to the loss and annual-exemption stages under the exercise assumptions.
Common mistake: Adding final-period months already included in actual occupation double-counts relief and can incorrectly exempt more months than the property was owned.
Official syllabus reference: [2]
40. Computing marginal relief on a non-wasting chattel
For a non-wasting chattel, test the proceeds exemption before calculating tax. Where proceeds exceed the applicable exemption threshold and marginal relief applies, calculate both ordinary CGT and the marginal tax ceiling, then use the lower amount. Under the illustrative rule used here, that ceiling is half the excess of proceeds over the threshold; it limits tax, rather than reducing acquisition cost. Loss calculations also require attention: where the applicable rule substitutes threshold proceeds, the allowable loss is restricted accordingly. Check wasting-asset and business-use rules separately before using this treatment.
Worked example: Assume a painting costs €1,400 and sells for €3,000, with no expenses or other reliefs. Using a stipulated €2,540 threshold, 33% CGT and a half-excess ceiling, ordinary tax is €528; the ceiling is €230. Tax payable is €230.
Common mistake: The marginal ceiling restricts tax payable. Deducting the proceeds threshold from the gain and taxing the remainder applies a different, incorrect mechanism.
Official syllabus reference: [2]
41. Capital losses, negligible value and company gains
Allowable capital losses generally offset chargeable gains, rather than employment income or trading profit. Current losses and brought-forward losses require appropriate ordering, with the individual's annual exemption applied at its proper stage. A negligible-value claim can crystallise a loss on an asset that has become effectively worthless without an ordinary sale, subject to conditions. Companies do not receive the individual's annual exemption. Ordinary company gains enter the corporation-tax framework through the required conversion, while development-land gains retain separate CGT treatment. Keep development-land loss restrictions distinct from unrestricted ordinary capital-loss assumptions.
Worked example: Assume an individual has €15,000 chargeable gains and €4,000 allowable current losses. Net gains are €11,000 before the annual exemption. A company with the same figures cannot deduct the individual's exemption, and neither taxpayer can simply move the €4,000 loss against salary.
Common mistake: Treating an economic fall in value as an immediately deductible capital loss overlooks the need for a disposal or valid statutory claim.
Official syllabus reference: [2]
42. Entrepreneur relief and transfers of sites to children
Revised entrepreneur relief gives a reduced CGT rate on qualifying business-asset gains within its lifetime limit, subject to ownership, activity and, for relevant shares, working requirements. Investment assets and excluded activities do not qualify merely because the owner runs another business. A transfer of a qualifying site to a child can have separate relief subject to value, area, purpose and occupation conditions, with potential consequences if conditions later fail. These are specific reliefs, not general exemptions for family transactions. Retirement relief and incorporation relief are excluded from the supplied syllabus and should not substitute for these mechanisms.
Worked example: Assume an eligible entrepreneur has €300,000 qualifying gain within the supplied remaining lifetime limit and a 10% relief rate. Tax is €30,000 before other permitted adjustments. A separate investment-property gain does not gain that rate solely because the same person owns the qualifying business.
Common mistake: Applying a business relief to every asset owned by an entrepreneur ignores asset-specific conditions, activity exclusions and the lifetime limit.
Official syllabus reference: [2]
43. CGT withholding and payment dates
CGT withholding on specified asset transactions is a collection safeguard, not the vendor's final tax calculation. Where applicable and no clearance or exemption is established, the purchaser withholds the prescribed percentage of consideration and the vendor obtains the appropriate credit. Test the asset and transaction threshold before applying it. Individual CGT payment dates differ from return filing: disposals from January through November generally require payment by 15 December, while December disposals generally require payment by 31 January following. The annual return is ordinarily due by 31 October following the disposal year.
Worked example: An exercise stipulates withholding of 15% on €600,000 consideration and no clearance. The purchaser retains €90,000. If the vendor's final CGT is €72,000, the withholding is credited and creates an €18,000 excess, subject to the required return and repayment procedures.
Common mistake: Calculating withholding on the gain rather than consideration confuses a transaction-based collection mechanism with the vendor's final capital-gains liability.
Official syllabus reference: [2]
Local property tax
44. Residential-property scope and valuation periods
Local property tax concerns qualifying residential property in Ireland, rather than rental profit or the owner's personal income-tax residence. Establish whether the property is within scope, whether a statutory exemption applies and which valuation period governs the charge. The relevant self-assessed market value is fixed by the prescribed valuation date, not automatically reset to each year's current asking price. Mixed-use property requires identification of the residential element under the applicable rules. A property can produce no rent and still attract LPT; conversely, income-tax treatment of rent does not establish the LPT exemption position.
Worked example: An owner occupies a house personally and earns no rent. The property can still fall within LPT because residential ownership, rather than rental profitability, creates the relevant connection. The owner uses the prescribed valuation-date market value to identify its charge, not this month's estate-agent estimate.
Common mistake: Assuming an unlet or owner-occupied house cannot attract property tax confuses an ownership-based charge with tax on rental income.
Official syllabus reference: [2]
45. The liability date and responsible owner
LPT identifies a liable person by reference to the statutory liability date, generally 1 November preceding the charge year. Ownership or a qualifying long-term interest matters more than who physically occupies the house. Joint ownership does not divide the property's total charge into unrelated assessments; arrangements for the designated liable person and collection must be considered. A purchaser and seller may privately apportion the cost, but their contract does not rewrite Revenue's liability-date rule. Exemptions require their own conditions, and a tenant paying ordinary short-term rent is not automatically the liable property owner.
Worked example: Assume liability for Year 2 is fixed on 1 November Year 1. A seller owns the house then and completes a sale in December. The seller remains the relevant liable person for that charge, although the sale contract may provide a reimbursement from the purchaser.
Common mistake: Using the person living in the property on the payment date ignores the ownership-based liability date and any separate contractual apportionment.
Official syllabus reference: [2]
46. LPT valuation bands and upward local adjustments
An LPT computation starts with the correct valuation period and the property's prescribed market value. Apply the relevant band charge or higher-value formula rather than assuming one percentage applies to all properties. Where a local authority adopts an examinable upward local adjustment, apply it to the basic charge as directed. The supplied syllabus excludes local adjustment factors reducing the basic rate, so downward adjustments should not be added as an extra tested mechanism. Distinguish a percentage increase in tax from a percentage-point increase in the property-value tax rate. Exercise schedules must be labelled as assumptions.
Worked example: Assume a band produces basic LPT of €420 and an applicable local adjustment increases it by 15%. The additional charge is €63 and annual LPT is €483. Moving the property into a different valuation band would require a separate valuation conclusion, not this percentage calculation.
Common mistake: Adding the adjustment percentage directly to the underlying property-tax rate applies it to the wrong base and materially overstates the charge.
Official syllabus reference: [2]
47. Deferral, exemption and payment arrangements
An exemption removes the charge where its statutory conditions are met; a deferral postpones payment and can leave an interest-bearing liability attached to the property. Deferral eligibility can depend on income or specified hardship and estate circumstances, with full or partial relief from immediate payment. Payment methods such as deductions at source, debit arrangements or instalments change collection timing rather than the assessed annual tax. Establish eligibility and the amount deferred before calculating the remaining payment. A future sale or change of circumstances can bring deferred liabilities into payment, so deferral is not equivalent to forgiveness.
Worked example: Assume annual LPT of €480 and an approved 50% deferral. Current payment is €240, while €240 remains deferred and may accrue the prescribed interest. A twelve-month payment arrangement for the current portion would be €20 monthly, without cancelling the deferred principal.
Common mistake: Describing a deferral as exemption understates the continuing liability and hides interest or later payment consequences attached to the property.
Official syllabus reference: [2]
Social insurance and universal social charge
48. PRSI classification before contribution calculation
PRSI classification depends on the person's activity and insurance position. Class A1 concerns the specified employee category, Class S self-employment, and Class K specified unearned-income cases. Classification precedes applying contribution rates, credits and minima. The supplied syllabus expressly frames scope using an under-16 and over-66 exclusion; treat that as its examination boundary, rather than a complete statement of every live pension-age arrangement. Employee and employer liabilities are separate. A person can have different income sources requiring distinct treatment, so one rate applied to total bank receipts is not a reliable computation.
Worked example: A 35-year-old employee earns €1,000 weekly; assume A1 rates of 4% employee and 11% employer with no adjustments. Contributions are €40 and €110. Under the supplied syllabus's age boundary, an otherwise similar 15-year-old has no contribution charge, rather than the same €150 total.
Common mistake: Selecting a rate before establishing class, age boundary and reckonable earnings can produce a precise calculation for the wrong liability.
Official syllabus reference: [2]
49. Class S annual liability and minimum contributions
Class S generally applies to qualifying self-employed persons and uses the appropriate annual reckonable income. Establish the taxable business result and any other included income under the contribution rules; do not substitute turnover or cash drawings. Apply the relevant rate and compare the result with the statutory minimum where applicable. Income thresholds and exemptions require their own tests. Income-tax personal credits and standard-rate bands do not reduce PRSI automatically. A self-employed person generally calculates an annual contribution without an employer contribution on that same self-employed income, unlike the separate employee and employer charges in Class A.
Worked example: Assume Class S reckonable income of €8,000, a contribution rate of 4% and an applicable minimum of €500. Percentage liability is €320, so the minimum produces €500 payable. The exercise's minimum, rather than an income-tax credit, determines the final contribution.
Common mistake: Calculating Class S on sales instead of reckonable income ignores business deductions, while omitting an applicable minimum can understate the contribution.
Official syllabus reference: [2]
50. Class K and unearned-income exposure
Class K addresses specified unearned income of modified-rate contributors and certain employed contributors without Case I or II income. It is not a universal additional contribution on every employee's salary. Determine the person's insurance category, the type of unearned income and the relevant exemption or entry threshold before applying the rate. Where a threshold brings the income into charge, establish whether the rule charges the full reckonable amount rather than merely the excess. Investment withholding and income-tax credits are separate from this social-insurance computation and do not automatically settle the Class K liability.
Worked example: Assume a qualifying modified-rate contributor has €9,000 reckonable investment income, the supplied entry condition is satisfied, and Class K applies at 4% to the full amount. Contribution is €360. Tax already withheld from the investment does not itself eliminate that separate social-insurance charge.
Common mistake: Charging Class K automatically on all employment pay confuses a specified unearned-income provision with the ordinary employee contribution class.
Official syllabus reference: [2]
51. USC exemption thresholds and progressive bands
USC is a separate charge with its own income base, annual exemption and rate bands. First determine whether total relevant income falls within the exemption. If the exemption is exceeded, the ordinary mechanism can charge the full relevant income through the applicable bands rather than only income above the exemption threshold. Allocate each slice once and add the resulting amounts. Income-tax personal credits do not normally reduce USC. Reduced-rate eligibility and any non-PAYE surcharge require separate tests, so age, medical-card status or business income must not be assumed to produce the standard computation.
Worked example: Assume an individual is outside the exemption and has €30,000 chargeable income. Supplied bands charge €10,000 at 0.5%, €10,000 at 2% and €10,000 at 4%. USC is €50 + €200 + €400 = €650, without deducting an income-tax personal credit.
Common mistake: Subtracting the exemption threshold as an allowance after the person fails its eligibility test can incorrectly remove chargeable income.
Official syllabus reference: [2]
52. USC income exclusions and pension differences
USC income is not simply taxable income copied from the income-tax computation. Certain payments, including qualifying social-welfare income, are excluded, while some income-tax deductions do not reduce USC. Personal pension contributions illustrate the distinction: income-tax relief does not generally create an equivalent USC deduction. Establish gross relevant earnings, allowable source adjustments and specific USC exclusions before applying bands. Modified rates and surcharges then require their own eligibility analysis. The result can legitimately show a higher USC income base than income-tax taxable income without either computation being wrong.
Worked example: Assume salary of €50,000 and a €5,000 personal pension contribution fully deductible for income tax but not USC. Income-tax taxable salary can be €45,000 while the USC base remains €50,000. A separately identified exempt social-welfare payment is not added merely because it reaches the bank.
Common mistake: Copying the income-tax taxable-income total directly into USC imports deductions and exclusions that do not necessarily apply to the separate charge.
Official syllabus reference: [2]
Value added tax (VAT)
53. Building the taxable-turnover figure for VAT registration
VAT registration analysis begins by classifying supplies, rather than adding every receipt together. Standard-rated, reduced-rated and zero-rated supplies are taxable supplies; exempt supplies have a different status. Build the relevant turnover figure using the applicable registration rules, measurement period and threshold for the business. Zero-rated sales can therefore contribute to a registration obligation even though they generate no output VAT. Exempt turnover should not be treated as zero-rated turnover. Voluntary registration and businesses making mixed supplies require separate consideration, including the consequences for input-tax recovery and invoicing.
Worked example: Assume registration is required when taxable turnover exceeds €75,000 in the stated measurement period. A business has €62,000 standard-rated sales, €18,000 zero-rated sales and €24,000 exempt sales. Relevant taxable turnover is €80,000, exceeding the stipulated threshold by €5,000.
Common mistake: Excluding zero-rated sales because their output VAT is nil can conceal a registration obligation; including exempt sales treats two different VAT categories alike.
Official syllabus reference: [2]
54. Allocating VAT between advances and the final invoice
A tax point determines the period in which output VAT must be accounted for. Identify the relevant supply, invoice and payment dates, then apply the governing tax-point rules rather than relying solely on the accounting revenue date. An advance receipt can create an earlier tax point for the amount received. When the remaining consideration subsequently becomes taxable, deduct the portion already accounted for so that the advance is not taxed twice. Distinguish VAT-exclusive amounts from VAT-inclusive receipts before calculating the tax attributable to each period.
Worked example: Under stipulated invoice-date rules with earlier taxation of advances, a supplier receives €3,000 excluding VAT in April and invoices the €10,000 total in May. At an assumed 23%, account for €690 in April and €1,610 on the €7,000 balance in May.
Common mistake: Charging VAT on the advance and then again on the full invoice duplicates output tax; postponing everything until the final invoice misses the earlier tax point.
Official syllabus reference: [2]
55. Input recovery, blocked expenditure and mixed use
VAT payable generally equals output tax less recoverable input tax, not all VAT paid to suppliers. Recovery requires the appropriate evidence and attribution to qualifying taxable business activity. Specific blocked categories can deny recovery even where expenditure has a commercial purpose. Private use and exempt activities require allocation under the applicable method; zero-rated supplies must not be mistaken for exempt activity. Apportion shared overheads on a justified basis and avoid claiming the same invoice twice. A valid invoice, payment of the supplier and accounting-expense deductibility are each insufficient alone to establish VAT recovery.
Worked example: A business incurs €4,000 input VAT wholly attributable to taxable supplies and €2,000 shared input VAT stipulated to be 60% recoverable. It claims €5,200 in total. Against €9,000 output VAT, the net payment is €3,800, provided no further restriction applies.
Common mistake: Recovering every invoice's VAT because the cost is deductible for income tax confuses two taxes with different evidence and restriction rules.
Official syllabus reference: [2]
56. Composite supplies and the two-thirds services rule
A composite supply has a principal element with ancillary elements that generally follow its treatment; a multiple supply contains distinct elements requiring the applicable allocation. Identify the commercial substance before splitting a package merely because an invoice has separate lines. The two-thirds rule is a specific mechanism for qualifying services incorporating goods: where materials cost exceeds two-thirds of the VAT-exclusive total charge, the goods' rate can apply to the whole supply, subject to exceptions. The comparison uses materials cost, not their selling price, and must keep both sides exclusive of VAT.
Worked example: A qualifying repair costs the customer €900 before VAT and incorporates materials costing €650 before VAT. Two-thirds of the charge is €600, so the stated rule is exceeded. At an assumed 23% materials rate, output VAT on the whole supply is €207.
Common mistake: Applying separate rates automatically to materials and labour ignores the whole-supply treatment that a qualifying two-thirds-rule calculation can require.
Official syllabus reference: [2]
57. Cross-border supplies and reverse-charge accounting
Cross-border VAT starts with goods versus services, customer status and the relevant place-of-supply rule. A qualifying business-to-business service can require the Irish recipient to account for VAT under the reverse charge rather than relying on the foreign supplier to charge Irish VAT. Where full recovery applies, matching output and input entries can make the transaction cash-neutral, but reporting remains necessary. Intra-community goods, exports and imports require their own evidence and rules. A foreign address alone does not establish zero rating, and an overseas invoice without VAT does not automatically mean no Irish liability.
Worked example: Assume an Irish business receives a €5,000 service subject to Irish reverse charge at 23%, with full recovery. It records €1,150 output VAT and €1,150 input VAT. Net payable is nil, but both entries are required; omitting the transaction would misstate the return.
Common mistake: Ignoring an overseas invoice because it shows no VAT overlooks recipient accounting obligations and the separate conditions for input recovery.
Official syllabus reference: [2]
58. Cash accounting and second-hand margin schemes
Special VAT schemes change specified aspects of the ordinary calculation and require eligibility rather than informal adoption. Cash-receipts accounting generally links output VAT to qualifying receipts instead of ordinary invoicing timing, while input recovery retains its relevant rules. A qualifying second-hand margin scheme taxes the eligible margin under its conditions rather than the entire selling price, with particular purchase and record requirements. Do not mix the schemes: one primarily affects timing, the other the taxable base. VAT-inclusive amounts must be converted using the VAT fraction, and a negative commercial margin does not automatically create refundable output VAT.
Worked example: Assume an eligible margin-scheme dealer buys an item for €800 and sells it for €1,046, with a VAT-inclusive margin of €246. At an assumed 23% rate, VAT is €246 × 23/123 = €46, leaving a VAT-exclusive margin of €200.
Common mistake: Multiplying a VAT-inclusive margin by the headline rate overstates VAT because the margin already contains the tax being extracted.
Official syllabus reference: [2]
Employability and technology skills
59. Formula-driven tax computations and control totals
A useful tax spreadsheet separates inputs, source adjustments, taxable bases, rates, reliefs and payments. Reference input cells and rate cells so corrections flow through the calculation, while clear labels establish whether each amount is added or deducted. Build an independent control total, such as reconciling taxable profit back to accounting profit through net adjustments. This detects omissions and reversed signs more effectively than repeating the same formula. Keep source references visible and avoid excessive rounding before the final result. Spreadsheet presentation is assessed through the quality of the response, not decorative formatting.
Worked example: Accounting profit is €70,000, add-backs €9,000 and allowances €12,000. The spreadsheet calculates €67,000 taxable profit. A control confirms that taxable profit is €3,000 below accounting profit, matching net adjustments of minus €3,000; a €91,000 result would immediately fail that reconciliation.
Common mistake: Hard-coding every intermediate total hides dependencies, so correcting an exhibit amount can leave a polished response containing inconsistent downstream figures.
Official syllabus reference: [2]
60. Applying an amended exhibit consistently
When an examination exhibit is amended, identify which figure has changed and where the correction affects the response. Keep a clear reference to the amended source, update the relevant input and allow dependent calculations to recalculate. Then inspect written explanations, tables and conclusions for figures copied before the amendment. A correct spreadsheet result can still be presented misleadingly if the accompanying narrative retains an obsolete amount. Use the available windows and navigation tools to compare the amendment with the requirement, and present one consistent final answer with clearly labelled workings.
Worked example: An amended exhibit reduces gross rent from €18,000 to €15,000; allowable expenses remain €4,000. Update the rent input and source reference. Net rental income becomes €11,000, so replace the former €14,000 in both the computation and written conclusion.
Common mistake: Updating a calculation without updating copied narrative leaves contradictory answers. The final response must consistently reflect the amended evidence wherever it affects the result.
Official syllabus reference: [2]
Official syllabus sources
- ACCA Qualification structure and requirements | ACCA Global
- Taxation (IRL) - syllabus and study guide June 2026 - June 2027 (PDF, 508KB)