This guide develops the calculations and distinctions behind Vietnamese PIT, CIT, foreign contractor tax, VAT and tax administration, alongside spreadsheet and presentation skills. Its twenty original practice items combine multiple-choice questions with constructed responses; sixty concepts explain mechanisms, worked applications and common errors. The practice allocations are representative, not ACCA domain weights or a full mock. Coverage follows the June 2026, December 2026 and June 2027 syllabus as applicable on 16 October 2026, using the 31 December 2025 legislative cutoff and excluding future-effective provisions unless expressly examinable. Numerical rules are explicit exercise assumptions. Citations establish syllabus relevance, not independent verification of legislation.
What this guide covers
Practise Vietnamese tax calculations with 20 original questions and a detailed 60-concept ACCA TX-VNM guide.
The Vietnamese tax system and its administration
1. Tax incidence, revenue and economic incentives
Taxation finances public expenditure, redistributes resources and influences economic behaviour. Distinguish the legal obligation to account for a tax from its economic incidence: market conditions determine how much burden falls on consumers, workers or owners. PIT and CIT are direct taxes on income or profits; VAT is an indirect tax collected through transactions. Withholding does not change a direct tax into an indirect tax. In a scenario, identify the tax base, liable person, collecting intermediary and intended policy effect before discussing the consequences of a rate or relief change.
Worked example: A retailer raises its VAT-inclusive price after a tax increase but absorbs part of the increase through a lower margin. The retailer accounts for the tax, while customers and owners share its economic burden through higher prices and reduced profit.
Common mistake: Assuming that the person submitting the tax payment necessarily bears the entire economic burden overlooks pricing, wages and market responses.
Official syllabus reference: [2]
2. Lawful planning, evasion and professional judgement
Tax planning evaluates lawful alternatives using their actual commercial facts and applicable tax treatment. Evasion involves unlawful concealment or misrepresentation, such as suppressing taxable receipts or inventing deductions. A transaction’s label does not establish its treatment when the economic substance differs. Professional judgement requires identifying uncertainty, obtaining relevant evidence and presenting a supportable calculation rather than promising a preferred result. Compare genuine alternatives on an after-tax basis, including eligibility conditions and compliance costs. A lower tax outcome is defensible only when the arrangement and disclosures satisfy the governing requirements.
Worked example: A company compares buying equipment with leasing it and models the different deduction timings. That is a legitimate planning exercise. Recording a purchase that never occurred to claim depreciation instead misstates the transaction and cannot support a valid deduction.
Common mistake: Treating every tax saving as evasion, or every documented arrangement as lawful planning, ignores both legal entitlement and economic substance.
Official syllabus reference: [2]
3. Registration and the identity of the taxpayer
Tax registration connects an individual or organisation to identification, declaration and payment obligations. First identify the legal taxpayer, then determine whether another party acts as withholding agent or filing representative. An employer’s payroll duties do not make employees’ income its own taxable income. Similarly, a customer withholding contractor tax performs a collection function distinct from its own CIT computation. Registration information must correspond to the actual entity and activity, with changes handled through the relevant procedure. Registration itself does not establish that every transaction is taxable or that every available relief applies.
Worked example: A newly established business registers its tax identity and separately establishes payroll withholding processes. Its employees’ PIT deductions are recorded as amounts collected for remittance, while the business’s own CIT is calculated from its taxable corporate income.
Common mistake: Combining the taxpayer and withholding agent into one role can misallocate income, credits and responsibility for preparing the required declarations.
Official syllabus reference: [2]
4. Returns, amendments and an auditable record trail
A tax return converts transaction records into declared tax bases, liabilities and credits. Reliable books support the completeness of revenue, the eligibility of expenses and the timing of recognition. When an error is discovered, distinguish an incorrect original declaration from a genuine later transaction, then determine the relevant amendment or adjustment procedure. Preserve the original calculation, corrected calculation and explanation of the difference. An invoice alone may not establish every condition for deduction or credit; contracts, payment evidence and delivery records may also matter. Subsequent inspection can test an already finalised return.
Worked example: An omitted sales invoice belongs to an earlier reporting period rather than the current month. The accountant traces delivery and payment records, quantifies the earlier understatement and prepares the applicable correction with a reconciliation from the original declared figures.
Common mistake: Posting every discovered error into the current period can leave the original return incorrect and distort both periods’ liabilities and credits.
Official syllabus reference: [2]
5. Provisional payments and finalisation across locations
Provisional tax payments are amounts paid during a period against the liability ultimately determined under the relevant finalisation rules. They are payment credits, rather than deductible business expenses. Geographically dispersed operations can create allocation or local payment obligations without creating duplicate taxation of the same company profit. Separate three questions: how total liability is computed, where provisional amounts must be paid and how those payments are credited at finalisation. Use the prescribed allocation basis and dates supplied by the applicable rules. Do not infer a local profit split merely from where cash was received.
Worked example: Assume a company’s final CIT is 420 units and valid provisional payments across its locations total 350 units. Its remaining balance is 70 units. The location schedule explains the 350-unit allocation without reducing taxable profit or charging the total tax twice.
Common mistake: Deducting provisional CIT from taxable income confuses the measurement of profit with the settlement of a tax liability already calculated.
Official syllabus reference: [2]
6. Withholding credits, offsets and refunds
Withholding collects tax through a payer before or when income reaches the recipient. The payer calculates, deducts and remits the required amount; the recipient recognises income and claims any permitted credit using supporting evidence. Whether withholding is final or creditable depends on the particular income regime. A credit offsets a liability, whereas a refund repays an eligible excess under separate conditions. Reconcile gross income, tax withheld and net cash to prevent treating withholding as an income deduction. Distinguish domestic payment credits from foreign tax relief, which can have additional limitations.
Worked example: Assume gross remuneration is 100 units, payroll withholding is 12 and cash received is 88. If final tax is 10 and the withholding is creditable, the settlement shows a 2-unit excess; any repayment follows the applicable refund conditions.
Common mistake: Using net cash as taxable income and then claiming the withholding again understates the base and gives the same deduction twice.
Official syllabus reference: [2]
7. Tax inspections, information powers and complaints
Tax administration combines taxpayer declarations with authority powers to request information, examine records, assess amounts and recover liabilities. Risk management helps target scrutiny but does not itself prove an understatement. In a dispute, separate factual disagreements from disagreements over interpretation or calculation. A useful complaint identifies the challenged decision, relevant transactions, supporting evidence and requested correction. Keep the applicable complaint procedure distinct from any continuing payment obligation: challenging a decision does not automatically establish suspension. Exact deadlines and procedural rights must come from the governing rules rather than assumptions about general administrative practice.
Worked example: An assessment denies an expense because the authority believes delivery never occurred. The company organises the contract, receipt records and payment trail, explains their connection to the deduction and specifies the assessment adjustment it seeks through the applicable complaint process.
Common mistake: Assuming that a complaint automatically cancels collection or that an inspection proves wrongdoing bypasses the separate rules governing evidence, decisions and payment.
Official syllabus reference: [2]
8. Separate tax, penalties and late-payment amounts
Non-compliance can produce several distinct amounts: unpaid principal tax, an administrative penalty and a time-based late-payment charge. Identify the triggering conduct and calculation base for each before applying a percentage. A late return, an understated liability and late payment are different events and need not have identical consequences. For simple daily charges, multiply overdue tax by the stipulated daily rate and number of chargeable days. Check payment dates and any changes to the outstanding balance. Rates, relief conditions and day-count conventions require explicit authority or supplied exercise assumptions.
Worked example: Under assumed rules, omitted tax of 40 units attracts a 20% penalty and 0.03% daily interest for 30 days. The penalty is 8 units, interest is 0.36 units and total additional settlement is 48.36 units, before any separately applicable relief.
Common mistake: Applying a penalty percentage to omitted revenue rather than understated tax can substantially overstate the amount when the specified base is tax.
Official syllabus reference: [2]
9. Related parties, substance and disclosure
Related-party analysis first identifies relationships within the applicable definition, then examines the controlled transactions and their economic substance. Ownership is relevant, but relationship tests can also involve control, financing or other prescribed connections; do not invent a universal ownership threshold. Disclosure and documentation obligations are separate from whether a price ultimately needs adjustment. Describe what each party actually does, the assets it uses and the risks it controls. Contractual wording supports analysis but cannot replace evidence of conduct. This functional understanding guides comparability and supports an arm’s-length treatment of revenue, expenses and financing.
Worked example: A group contract describes a distributor as bearing inventory risk, but the parent decides stock levels and reimburses every obsolete item. The analysis examines actual conduct before selecting comparables and records the controlled transaction for the applicable disclosure requirements.
Common mistake: Assuming a market-looking price removes related-party disclosure obligations confuses reporting requirements with the separate question of whether a tax adjustment is needed.
Official syllabus reference: [2]
10. Selecting a transfer-pricing comparison method
Transfer-pricing methods test controlled transactions against independent behaviour. A comparable uncontrolled price compares transaction prices when differences can be reliably adjusted. A resale-price approach works back from resale proceeds using a comparable gross margin; cost-plus builds from an appropriate cost base and comparable mark-up. Transactional net margin analysis compares a suitable net profit indicator, while profit-split analysis allocates combined profit where contributions are closely integrated. Method selection depends on functions, assets, risks and available comparables. Gross margins, net margins and mark-ups use different denominators and must not be substituted mechanically.
Worked example: Assume an independent manufacturer earns a 10% mark-up on comparable production costs of 800 units. A cost-plus benchmark gives a transfer price of 880 units. It does not imply a 10% sales margin, which would produce a different price.
Common mistake: Treating a percentage mark-up on cost as the same percentage margin on revenue changes the denominator and produces an incorrect benchmark.
Official syllabus reference: [2]
Personal income tax
11. Residence and source are separate PIT questions
Residence determines the breadth of an individual’s exposure to Vietnamese PIT, while source identifies the jurisdictional connection of particular income. Residents generally face a broader income scope than non-residents, whose Vietnamese-source income requires separate analysis. Establish residence using the applicable presence and residence rules before choosing the assessment basis. Citizenship, payment currency and the bank account receiving salary do not independently resolve residence or source. Employment duties performed in Vietnam can matter even when an overseas employer pays. Exact presence thresholds and assessment-period rules must be supplied or established by the applicable examinable legislation.
Worked example: An employee receives salary into an overseas account while performing duties in Vietnam. The accountant first establishes residence, then identifies the duties and income source. The overseas payment destination alone does not establish that the salary falls outside Vietnamese taxation.
Common mistake: Equating foreign nationality or offshore payment with non-taxability overlooks the independent residence and source tests governing the individual and the income.
Official syllabus reference: [2]
12. Treaty allocation and capped foreign tax credits
Cross-border PIT can involve both domestic liability and treaty restrictions on taxing rights. Analyse domestic residence and income source first, then apply any relevant treaty provision actually supplied. A foreign tax credit generally relieves overlapping taxation within an applicable limit; it does not automatically reimburse all foreign tax. Match eligible foreign tax to the corresponding income and compute the prescribed domestic-tax cap. Separate the credit from domestic withholding and from deductions in arriving at taxable income. Detailed individual treaty provisions are excluded from this syllabus, so a scenario must provide any specific treaty terms needed.
Worked example: Assume Vietnamese tax attributable to foreign salary is 30 units and eligible foreign tax paid is 42. Under a lower-of cap, the credit is 30. If total Vietnamese tax before credit is 90, the remaining liability is 60 before domestic payment credits.
Common mistake: Crediting every foreign tax payment without matching the income and checking the limit can improperly shelter unrelated Vietnamese income from domestic tax.
Official syllabus reference: [2]
13. Income attribution and the correct assessment period
PIT attribution determines whose income a receipt represents and when it enters the relevant assessment. Identify the legal and economic entitlement, income category and prescribed recognition event instead of relying solely on a bank transfer date. Salary, business receipts, dividends and transfers may use different assessment rules. An agent collecting money for another person does not necessarily earn the full collection as personal income. Conversely, directing earned income into another account does not automatically transfer the tax liability. Apply any supplied allocation rule for shared ownership or cross-period receipts consistently and retain supporting records.
Worked example: A platform collects 100 units from a customer, retains a 10-unit commission and sends 90 to a service provider. The provider’s income analysis distinguishes the gross customer consideration from the platform’s own commission and applies the prescribed business-income assessment rule.
Common mistake: Treating every amount entering a bank account as that account holder’s taxable income ignores agency, ownership and the applicable recognition rules.
Official syllabus reference: [2]
14. Employment benefits and net-to-gross remuneration
Employment income can include cash salary and taxable benefits provided directly by an employer. Value each benefit under its specific rule, separating exempt reimbursements from personal benefits and applying any cap to the correct remuneration base. A net-of-tax salary promise requires grossing up because employer-paid PIT can itself be part of taxable remuneration. With progressive rates, identify the applicable band and solve consistently rather than using a single assumed percentage. A capped housing benefit can interact with the gross-up, so calculate the tax and then verify that the assumed cap branch remains valid.
Worked example: Assume net cash is 80 units, no benefits or deductions apply and a flat 20% tax is used solely for the exercise. Gross remuneration is 80 ÷ 0.8 = 100 units, and employer-paid tax is 20 units rather than 16.
Common mistake: Multiplying net salary by the tax rate understates employer-paid tax because the tax payment itself must be included in gross taxable remuneration.
Official syllabus reference: [2]
15. Salary deductions, dependants and qualifying months
Salary deductions reduce the assessable base only when their conditions are satisfied. Distinguish personal deductions, dependent deductions, eligible insurance and other permitted contributions from exempt income and tax credits. Determine the qualifying individual, period and evidence for each deduction, including any restrictions on duplicate dependent claims. A monthly amount does not automatically imply twelve months of entitlement. Deductions permitted against salary also do not necessarily apply to separately taxed investment or transfer income. Use the examination’s supplied allowances and relief information rather than treating an unverified amount as a current statutory entitlement.
Worked example: Assume a dependent deduction is 4 units per qualifying month and a parent qualifies for nine months. The permitted deduction is 36 units. That amount reduces the relevant salary base; it is not a 36-unit reduction in the final tax bill.
Common mistake: Claiming a full-year dependent deduction from a monthly allowance without checking qualifying months can overstate relief even when the dependent otherwise qualifies.
Official syllabus reference: [2]
16. Marginal bands and annual salary finalisation
A progressive PIT schedule taxes slices of assessable income at different marginal rates. Calculate the amount falling within each band, or use an equivalent quick-deduction formula only when it matches the same schedule and period. Monthly payroll withholding is not necessarily the final annual liability because bonuses, changing income and deductions can alter the annual result. Annualisation requires the applicable annual rules rather than multiplying an unusually high month indiscriminately. After establishing annual tax, subtract creditable withholding to determine the balance. Keep taxable income, assessable income, liability and payments visibly separate.
Worked example: Under assumed annual bands, the first 120 units are taxed at 5%, the next 120 at 10% and the remaining 10 at 20%. Tax on 250 units is 6 + 12 + 2 = 20 units, before withholding credits.
Common mistake: Applying the highest marginal rate to all income overstates tax by ignoring the lower rates applicable to the earlier income slices.
Official syllabus reference: [2]
17. Non-resident employment income and duty allocation
Non-resident employment taxation focuses on income within the relevant Vietnamese taxing scope and the rate prescribed for that category. Where remuneration covers duties in several countries, apply the required allocation method using the appropriate workdays, period and benefit treatment. Physical presence days used for residence and workdays used for salary allocation answer different questions and may not share the same denominator. Offshore payment does not by itself remove Vietnamese-source remuneration. A treaty may restrict liability if its supplied conditions are met, but non-residence alone does not establish a treaty exemption.
Worked example: Assume a non-resident’s 300-unit salary is allocated by 40 Vietnamese workdays out of 200 total workdays, with no separately attributable benefits. Vietnamese-source salary is 60 units. The stipulated non-resident rate is applied to that amount, subject to any supplied treaty relief.
Common mistake: Using calendar presence days as a workday allocation without authority can misstate Vietnamese-source salary even when the residence calculation itself is correct.
Official syllabus reference: [2]
18. Household business and platform gross receipts
Freelancers, household businesses and sharing-economy participants require analysis of their actual activity and applicable business-income regime. Separate gross customer consideration, platform commissions, refunds and amounts merely collected as agent. A turnover-based tax does not permit ordinary accounting expenses to reduce the base unless the relevant rule says so. Platform withholding or remittance may be a payment mechanism rather than the final measurement of liability. Classify the activity before selecting any prescribed percentage, and distinguish PIT from VAT that may separately apply. This expressly includes the syllabus’s added sharing-economy coverage.
Worked example: Assume customers pay a driver 200 units through a platform that retains commission of 20. If the supplied PIT rule taxes gross customer revenue at 2%, PIT is 4 units, despite the driver receiving only 180 units in cash.
Common mistake: Using platform net remittances as taxable turnover can incorrectly deduct commissions where the applicable regime taxes gross customer consideration instead.
Official syllabus reference: [2]
19. Separating investment distributions from ownership disposals
An investor can receive income from holding an investment and separately realise proceeds by transferring ownership. Classify each receipt before selecting its tax base. A distribution may be assessed on the amount distributed, whereas a capital transfer may use a gain after permitted acquisition costs and transaction expenses. Securities transfers can have a different basis, so identifying the asset matters. Keep distribution statements, acquisition evidence and disposal documents separate. Do not deduct the investment's original cost against a distribution merely because both receipts concern the same holding.
Worked example: Lan receives a VND 60 million distribution and sells an unlisted equity interest for VND 480 million. Assume distributions bear 5% PIT and transfer gains bear 20%, with acquisition cost of 350 and allowable selling costs of 10. Distribution PIT is 3; transfer PIT is (480−350−10)×20%=24; total PIT is VND 27 million.
Common mistake: Treating every receipt from an investment as a dividend overlooks the separate disposal calculation and may wrongly deny acquisition-cost deductions.
Official syllabus reference: [2]
20. Individual real-property transfers and relief conditions
An individual property transfer requires identification of the interest transferred, taxable consideration and any specific exemption or relief. Do not automatically use accounting profit: the applicable PIT regime may instead tax a prescribed proceeds-based amount. Where valuation rules replace an understated contract price, use the relevant supplied basis. Family relationships or ownership history matter only if they satisfy the actual relief conditions and evidence requirements. Salary deductions do not automatically reduce transfer income. Distinguish the seller’s PIT from VAT, registration charges or other obligations that may concern different persons or transactions.
Worked example: Assume a taxable property sale has proceeds of 2,000 units and the exercise prescribes PIT at 2% of proceeds without expense deductions. PIT is 40 units. An acquisition cost of 1,500 does not change that stipulated proceeds-based computation.
Common mistake: Deducting historical purchase cost from every property sale assumes a gains-based regime even when the applicable rule expressly taxes transfer proceeds.
Official syllabus reference: [2]
21. Royalties, franchises and prizes use category-specific bases
Royalty, franchise and prize receipts are separate PIT categories requiring their own definitions, recognition rules and any prescribed exclusion amount. A royalty concerns payment for qualifying rights, while a franchise payment concerns the relevant commercial arrangement; contractual labels alone may not settle classification. Where a rule taxes only the excess over a stated threshold, apply that threshold to the prescribed unit, such as each qualifying contract or award. Do not transfer salary deductions or one category’s threshold to another. Establish gross consideration, qualifying exclusions and payer withholding responsibilities before calculating tax.
Worked example: Assume a prize rule taxes each award’s excess over 10 units at 10%. A single award of 35 gives a base of 25 and tax of 2.5 units. This arithmetic does not establish the treatment of a separate royalty contract.
Common mistake: Pooling unrelated receipts before applying a per-award or per-contract exclusion changes the prescribed assessment unit and can distort both the base and tax.
Official syllabus reference: [2]
22. Taxable gifts and inheritances require asset classification
Gift and inheritance taxation begins by identifying whether the transferred asset belongs to a taxable category under the applicable rules. Not every gratuitous receipt necessarily has the same PIT treatment. Determine the recipient, valuation date, taxable value and any relationship-based exemption or prescribed exclusion. A transfer without cash consideration can still require valuation; absence of a sale price does not establish a zero tax base. Separate gifts from employment benefits or disguised remuneration, because the correct category follows the underlying entitlement and relationship. Use the specific supplied conditions rather than assuming all family transfers are exempt.
Worked example: An individual receives an asset worth 80 units without payment. Assume the asset is within a taxable gift category, no exemption applies and the rule taxes value above 10 at 10%. The tax is (80 − 10) × 10% = 7 units.
Common mistake: Assuming every gift is exempt because no money changes hands overlooks the possibility of a taxable transfer valued by reference to the asset.
Official syllabus reference: [2]
23. Comparing remuneration packages after tax
PIT planning compares genuine alternatives using the employee’s net benefit and the employer’s full cost. A cash allowance, direct employer payment and reimbursement may have different treatment because eligibility, valuation or exemption conditions differ. Model taxable benefits, permitted deductions and employer-paid tax together instead of comparing headline salary alone. Timing can affect withholding and cash flow without necessarily changing final annual tax. A valid exemption must reflect the actual payment’s purpose and supporting facts; renaming salary does not create relief. State whether the objective is lower employer cost or higher employee net remuneration.
Worked example: A company compares an extra cash allowance with reimbursement of an actual qualifying business expense. It models the allowance as taxable and the reimbursement under the expressly supplied exemption conditions, then compares employee net receipts and total employer expenditure on equivalent facts.
Common mistake: Treating a change in payment description as a tax saving ignores whether the underlying expense and exemption conditions actually support the new treatment.
Official syllabus reference: [2]
Corporate income tax
24. Local subsidiaries and the permanent-establishment boundary
A Vietnamese subsidiary is a separate taxpayer; its incorporation does not automatically make it a permanent establishment of its foreign parent. A permanent establishment generally involves a fixed business location through which the foreign enterprise conducts business, such as an operating branch. An agent habitually exercising relevant contracting authority may also qualify under the applicable definition. Preparatory or auxiliary activities may be excluded where the governing rules provide that exclusion. For a foreign enterprise, distinguish profits attributable to a permanent establishment from other Vietnamese-source income that may attract separate taxation.
Worked example: Assume CIT is 20%, and a liaison office confined to market research is excluded from PE status. A Vietnamese subsidiary earns VND 700 million taxable profit: CIT is 140 million. Its foreign parent's separate research-only office signs no sales contracts and earns no income; it creates no PE or attributable CIT liability.
Common mistake: Assuming every local office creates the same CIT exposure ignores whether it conducts business and whether a separate incorporated taxpayer exists.
Official syllabus reference: [2]
25. Customer deposits and the revenue-recognition event
Receiving money and recognising taxable revenue are separate events. Start with the recognition rule applicable to the transaction, then identify the contractual performance that satisfies it. Under a goods-delivery assumption, an advance received before delivery remains a customer liability rather than current taxable revenue. Once delivery triggers recognition, include the full selling price, including any unpaid balance. Reconcile advances, recognised revenue and receivables so that neither the original deposit nor the later collection is counted twice. Accounting entries support this reconciliation but do not replace the applicable tax recognition rule.
Worked example: Assume goods revenue becomes taxable when delivery transfers ownership. A buyer pays VND 220 million in November for goods priced at VND 760 million. Delivery occurs in December; the balance arrives in January. November revenue is zero, December revenue is 760 million, and January collection creates no additional revenue.
Common mistake: Recognising the deposit immediately and the full invoice again on delivery double counts part of the sale; recognising only collections understates December revenue.
Official syllabus reference: [2]
26. Expense eligibility and permanent add-backs
Deductible expenses require satisfaction of the applicable business-purpose, documentary, payment and specific statutory conditions. Accounting recognition does not establish tax deductibility. Classify an expense as fully deductible, partly restricted, temporarily deferred or permanently disallowed, then reconcile it once. An unsupported invoice, private expenditure and a specifically prohibited item can fail for different reasons. Distinguish a tax disallowance from reversal of the underlying accounting cost. When a rule imposes a payment or documentation threshold, use the actual examinable requirement or a supplied assumption rather than importing an unverified amount from another period.
Worked example: Accounting profit includes a 15-unit fine explicitly identified as non-deductible in the exercise. Add back 15 when computing taxable income. The fine remains in accounting expenses, and there is no separate tax deduction merely because it was paid.
Common mistake: Assuming every invoiced and paid expense is deductible overlooks specific prohibitions and limits that can apply even to genuine business expenditure.
Official syllabus reference: [2]
27. Eligible asset cost and tax depreciation
Tax depreciation allocates an eligible asset’s recognised cost over the permitted period or method. Establish whether the asset qualifies, when it becomes available for business use and which acquisition or installation costs belong in its depreciable base. Recoverable VAT normally requires separate consideration from asset cost; lease treatment depends on the relevant arrangement and rules. Replace accounting depreciation with the allowed tax amount in the CIT reconciliation. Intangible assets can require different identification and amortisation analysis from tangible equipment. Do not infer a depreciation life, cost threshold or accelerated method without applicable support.
Worked example: Assume qualifying equipment costs 1,000 units plus installation of 100, with separately recoverable VAT excluded. If the supplied tax life is five years and a full straight-line year applies, depreciation is 1,100 ÷ 5 = 220 units.
Common mistake: Deducting both the capital purchase price and annual depreciation gives duplicate relief for the same asset rather than allocating its eligible cost.
Official syllabus reference: [2]
28. Repairs, improvements and asset disposals
A repair generally restores an asset’s existing operating condition, while an improvement enhances capacity, performance or useful life and may require capitalisation. Apply the governing criteria to what the work achieves, rather than the invoice label. Capitalised improvements can change the depreciable balance and remaining life prospectively under the applicable rules. On disposal, distinguish sale proceeds, disposal costs and tax written-down value when determining the taxable result. A part disposal requires a supportable allocation of the relevant tax basis. Accounting gains or losses may need adjustment when accounting and tax depreciation differ.
Worked example: A machine’s worn component is replaced to restore normal output, while a separate upgrade increases production capacity. The accountant evaluates the first as a repair and the second as a potential improvement, then calculates depreciation from the upgrade’s qualifying use date.
Common mistake: Classifying all maintenance invoices as immediately deductible ignores capital improvements, while capitalising every repair can improperly defer expenditure that qualifies for current deduction.
Official syllabus reference: [2]
29. Capital assignments, securities and offshore transfers
Corporate transfers of capital interests, securities or projects require identification of the legal seller, asset and applicable tax regime. A gain-based computation uses permitted proceeds, tax acquisition cost and eligible transfer expenses, but some transactions or sellers can face a different prescribed basis. Internal group restructuring does not automatically remove a taxable transfer. An offshore transaction can require Vietnamese tax analysis where it transfers an underlying Vietnamese economic interest under the relevant rules. Establish consideration and cost evidence before calculating liability, and distinguish the investor’s disposal tax from the target company’s own operating CIT.
Worked example: Assume a company transfers a capital interest for 900 units, with permitted tax cost of 600 and eligible transfer expenses of 20. Under a stipulated gain-based regime, taxable transfer income is 280 units, even if buyer and seller share a parent.
Common mistake: Assuming group ownership or offshore signing makes a transfer tax-free bypasses the specific rules governing restructuring, indirect transfers and the seller’s liability.
Official syllabus reference: [2]
30. Corporate real-property transfer income
Corporate real-property transfers require a separate identification of taxable turnover and permitted costs connected with the transferred property. Establish the nature of the right or project, recognition event and allocation of development, land-related and selling costs under the applicable rules. A corporate income computation should not automatically use an individual’s proceeds-based PIT treatment. Special restrictions can affect the interaction of property results with other business income or losses, so apply only the offset treatment actually supported. Reconcile accounting profit to the relevant tax basis and avoid deducting the same project cost in both development and transfer schedules.
Worked example: Assume a corporate property sale has taxable turnover of 5,000 units, allowable allocated development costs of 3,600 and eligible selling expenses of 100. Transfer income is 1,300 units before any separately specified loss relief, rate or special offset restriction.
Common mistake: Applying an individual property-transfer percentage to a corporate seller overlooks the different taxpayer, tax base and potentially separate treatment of corporate transfer income.
Official syllabus reference: [2]
31. Loss carryforward by origin and remaining life
Tax losses arise from the tax computation, which can differ from an accounting loss after adjustments. Maintain a schedule by year of origin, original amount, utilisation and remaining balance. Apply the permitted offset order, income restrictions and carryforward period supplied by the relevant rules; do not assume indefinite use or group-wide sharing. Loss relief reduces qualifying income before tax rates and payment credits. Incentive and non-incentive activities may need separate tracking. A loss is a potential deduction rather than a cash credit, so its value depends on future qualifying taxable income and timely utilisation.
Worked example: Assume available losses are 100 units from an older year and 80 from a newer year, both eligible, with oldest-first use required. Against current income of 140, use 100 plus 40, leaving 40 from the newer year for its remaining permitted period.
Common mistake: Subtracting a brought-forward loss directly from the tax bill overstates relief because the loss normally reduces qualifying income before the rate is applied.
Official syllabus reference: [2]
32. Welfare expenditure and aggregate deduction caps
Employee welfare expenditure needs both category eligibility and compliance with any aggregate deduction cap. Separate qualifying welfare from salary, business travel, insurance and other expense categories before applying the limit. Determine the prescribed salary-fund measure and averaging period rather than selecting a convenient accounting total. If accounting welfare expense exceeds the permitted deduction, add back only the disallowed portion. Documentation remains necessary even where spending is below the cap. The syllabus specifically tests eligible types and capped calculations, but the exact cap and salary definition require the applicable legislation or explicit exercise assumptions.
Worked example: Assume eligible welfare spending is 1,300 units and the deduction cap is one average month of a 12,000-unit annual salary fund. The cap is 1,000, so 300 is added back. Proper invoices do not eliminate that quantitative limit.
Common mistake: Using the cap itself as the add-back reverses its purpose: it measures the maximum allowed deduction rather than the automatically disallowed amount.
Official syllabus reference: [2]
33. Science and technology fund deductions and recapture
A qualifying science and technology fund can provide a prescribed deduction when amounts are appropriated under the relevant regime. That deduction is conditional: permitted funding limits, qualifying uses, utilisation periods and evidence must be tracked. Subsequent non-compliance can trigger recovery of tax benefits and additional amounts under the applicable rules. Separate the original fund deduction from actual research expenditure to avoid duplicate relief. A fund schedule should record allocations, uses, remaining balances and deadlines by origin. Exact percentages, utilisation requirements and recovery rates are not established by the supplied syllabus and must not be invented.
Worked example: Assume a permitted fund appropriation is 100 units and the exercise rate is 20%. Initial tax saving is 20. If the supplied recapture rule later withdraws relief on 40 unused units, the principal tax recovery is 8 before any specified additional charge.
Common mistake: Treating a fund appropriation as an unconditional permanent exemption ignores later utilisation conditions and the possibility of tax recovery for non-compliance.
Official syllabus reference: [2]
34. Provision eligibility versus accounting estimates
Accounting provisions recognise estimated obligations or asset impairments, but tax deduction depends on category-specific requirements. Doubtful debts, inventory, investments, warranties and severance-related amounts can require different evidence and calculation methods. Examine the underlying item, qualifying conditions, measurement ceiling and reversals rather than accepting a single accounting provision total. Add back any current excess, and track whether later payment, write-off or reversal changes the tax treatment. A provision is not automatically deductible because it is prudent, nor automatically disallowed because it is an estimate. The applicable tax formula governs the permitted amount.
Worked example: A company records a 90-unit doubtful-debt provision. Assume the supplied tax ageing and evidence rules permit only 30. Add back 60 in the current computation and preserve a debtor-level schedule so later recovery or write-off is treated consistently.
Common mistake: Deducting an accounting provision without testing the relevant tax conditions confuses financial-reporting prudence with the separate requirements for a corporate tax deduction.
Official syllabus reference: [2]
35. Debt financing, interest restrictions and carryforward
Debt can produce interest deductions, whereas equity returns generally require a different tax analysis. Interest deductibility can nevertheless be restricted by purpose, unpaid committed capital, lender circumstances or a related-party financing limitation. Apply permanent disallowances separately from any cap that permits later carryforward. Define the relevant net interest and adjusted earnings measure exactly as required, and avoid counting the same denied interest twice. A financing comparison must include cash cost, tax timing and the probability of using deferred deductions. The syllabus lists these restrictions but does not itself verify numerical cap percentages or carryforward periods.
Worked example: Assume interest is 420 units, 80 is permanently denied and the remaining amount faces a 300-unit deduction cap. Current disallowance is 120, but only the 40-unit cap excess is carried forward if the supplied rule permits it.
Common mistake: Carrying forward all disallowed interest incorrectly converts permanent exclusions into future deductions and can overstate the tax benefit of debt financing.
Official syllabus reference: [2]
36. Translating transfer-pricing adjustments into CIT
A transfer-pricing finding affects CIT through the particular revenue, expense or profit adjustment required. Determine whether the controlled transaction understates sales, overstates a deductible charge or otherwise shifts taxable income. Translate the adjustment once into the company’s tax reconciliation, keeping any separate interest limitation or deduction condition visible. An arm’s-length service price does not independently prove that the service occurred or that every deduction condition is met. Compute the resulting tax using the relevant activity’s rate and available losses, rather than multiplying every adjustment by an assumed universal rate without checking its income category.
Worked example: A company deducted a related-party service fee of 150 units, but the accepted arm’s-length amount is 110 and the service otherwise qualifies. Add back 40 units. At an assumed 20% rate with no losses, incremental CIT is 8 units.
Common mistake: Adding the full related-party payment to income after already limiting the deduction to its arm’s-length amount double counts the same adjustment.
Official syllabus reference: [2]
37. Incentive income, reduced rates and qualifying periods
CIT incentives attach to qualifying projects or income under specified conditions, rather than automatically covering every receipt of an eligible company. Identify the qualifying activity, commencement trigger, incentive duration and applicable rate, exemption or reduction. Segregate non-qualifying income and allocate common expenses on a supportable basis. Apply loss treatment consistently with the relevant incentive rules before calculating tax. An exemption period and a reduced-rate period are different mechanisms and may have different starting points. The supplied syllabus excludes detailed geographical lists, so no location entitlement should be inferred without the scenario’s qualifying facts.
Worked example: Assume a project’s qualifying income of 600 units attracts a 10% rate while unrelated income of 200 attracts 20%, with no losses. CIT is 60 + 40 = 100 units, rather than applying the project rate to all 800.
Common mistake: Applying one project’s incentive to the entire company can incorrectly shelter unrelated income and obscure the required allocation of common costs.
Official syllabus reference: [2]
38. Foreign income gross-up and underlying tax relief
Foreign income computations must distinguish cash received, withholding tax and any eligible underlying corporate tax. Where the applicable relief requires gross-up, restore the relevant foreign taxes before calculating domestic taxable income and the credit cap. Withholding is tax on the distribution or payment; underlying tax is tax on the profits supporting a distribution. Underlying relief requires its own entitlement and cannot be assumed for every dividend. Match each permitted credit to the corresponding gross income and apply the required limitation. Domestic provisional payments are settlement credits after the liability and foreign relief have been computed.
Worked example: Assume dividend cash is 160 units, withholding is 40 and eligible underlying tax is 50. Under a supplied gross-up rule, income is 250. At a 20% source-specific domestic cap, only 50 of the 90 foreign tax units is creditable.
Common mistake: Adding withholding to a dividend figure already stated before withholding counts the same tax twice and overstates both income and potential relief.
Official syllabus reference: [2]
39. Tax deferral versus permanent CIT savings
A permanent tax saving reduces total tax, while deferral shifts payment to a later period. Compare alternatives across the full relevant horizon, not only the first year. Faster eligible deductions may improve cash flow even when total deductions remain unchanged; a restricted expense may never yield relief. Evaluate the interaction of deduction timing with losses that might expire and with rate changes or incentive periods actually specified. Discounting can measure the financing value of deferral when a rate is supplied. A transaction must satisfy its recognition and eligibility rules; deliberate misdating is not a valid timing strategy.
Worked example: Assume two lawful methods allow the same 100-unit deduction, one now and one next year, with a constant 20% tax rate. Both save 20 units overall, but the earlier deduction provides a cash-flow benefit if the company can use it immediately.
Common mistake: Describing every first-year tax reduction as a permanent saving ignores later reversals and can mislead comparisons of investment or financing alternatives.
Official syllabus reference: [2]
Taxation of foreign contractors
40. Offshore equipment supply with Vietnamese installation
For a mixed equipment contract, establish the scope of each obligation before calculating FCT. Relevant facts include where goods are delivered, when ownership and risk pass, who imports them, and whether the contractor performs services in Vietnam. Contractual separation must reflect genuine obligations and supportable prices. An exercise may exclude qualifying offshore goods while bringing local installation into FCT; that produces a component-specific base rather than automatic inclusion of the entire invoice. Import VAT and customs liabilities remain separate questions and should not be confused with the contractor's FCT scope.
Worked example: Assume separately priced goods delivered offshore are outside FCT, while Vietnamese installation is within scope. Equipment costs VND 850 million; installation costs 120 million. Title and risk pass at the foreign port, and the buyer imports independently. The goods are excluded; only the VND 120 million installation enters the FCT base.
Common mistake: Applying FCT to the combined price merely because installation occurs in Vietnam disregards an expressly applicable exclusion for the separately identified offshore supply.
Official syllabus reference: [2]
41. Software rights versus implementation services
Classify a software payment by the rights and work purchased. Permission to reproduce and commercially distribute protected software supports royalty treatment under an assumed rights-based classification. Installation, configuration or training performed without transferring those exploitation rights can constitute a separate service. A bundled price requires an allocation accepted under the applicable rules, supported by contractual terms and commercial evidence. Once classified, apply the relevant CIT treatment to each component. Determine VAT treatment independently: a CIT royalty or service label does not, by itself, establish the corresponding VAT liability.
Worked example: Assume an accepted contract allocation assigns VND 320 million to rights to reproduce and distribute software and VND 80 million to implementation without exploitation rights. Ignore VAT; use CIT of 10% for royalties and 5% for services. Royalty CIT is 32 million, service CIT is 4 million, and total CIT is 36 million.
Common mistake: Calling the entire payment a software service overlooks separately granted exploitation rights and can apply the service percentage to a royalty component.
Official syllabus reference: [2]
42. The actual method and Vietnamese accounting records
Under the actual method, an eligible foreign contractor uses the required Vietnamese accounting framework and computes taxes through the relevant actual-method rules. CIT is based on taxable income after permitted expenses rather than simply a deemed percentage of receipts. VAT follows the applicable credit-method treatment, including input-credit conditions. Method eligibility, registration and filing responsibilities must be established before comparing outcomes. Good cost records matter because accounting expenses can still require tax adjustments. Using Vietnamese accounting records does not create unrestricted deductions or remove withholding obligations where the contractor has not met the necessary adoption conditions.
Worked example: Assume an eligible actual-method contractor has taxable revenue of 1,000 units and allowable expenses of 700. With a supplied CIT rate of 20%, CIT is 60 units. Its VAT calculation remains a separate output-minus-eligible-input computation.
Common mistake: Assuming the actual method taxes gross receipts at a deemed income percentage confuses a profit-based computation with the simplified revenue-based regime.
Official syllabus reference: [2]
43. The deemed method uses prescribed revenue percentages
The deemed method calculates tax components using prescribed percentages and defined revenue bases rather than a full actual-profit computation. Identify the activity classification and whether consideration includes or excludes taxes before multiplying. Ordinary commercial costs do not automatically reduce deemed revenue, although specific exclusions or qualifying subcontractor treatment may apply under the governing rules. VAT and CIT components must be calculated separately because their bases can differ. Establish who files, withholds and pays under the arrangement. A small accounting margin does not itself reduce a revenue-based deemed liability, making contract pricing particularly important.
Worked example: Assume a 1,050-unit tax-inclusive service receipt has deemed VAT of 5% of gross revenue and CIT of 5% after that VAT. VAT is 52.5, CIT is 49.875 and combined tax is 102.375 units, regardless of ordinary operating costs.
Common mistake: Deducting actual contractor expenses before applying deemed percentages imports profit-based mechanics into a regime whose stated base is prescribed revenue.
Official syllabus reference: [2]
44. The hybrid method separates VAT and CIT mechanics
The hybrid method combines different calculation approaches for VAT and CIT rather than averaging the actual and deemed methods. Under its relevant eligibility requirements, VAT is computed using the credit approach while CIT is determined using the prescribed deemed revenue percentage. Consequently, maintaining qualifying purchase invoices can affect VAT recovery without making actual costs deductible in the CIT component. Establish registration, accounting and filing conditions before selecting the method. Keep separate schedules for output and input VAT and for deemed CIT revenue. Method comparison should include both tax components and compliance costs, not merely the headline CIT percentage.
Worked example: Assume an eligible hybrid contractor has output VAT of 100 units, creditable input VAT of 60 and a deemed CIT base of 1,000 taxed at 5%. VAT payable is 40 and CIT is 50; actual operating costs do not replace the deemed CIT calculation.
Common mistake: Using actual taxable profit for hybrid CIT simply because VAT input credits are available confuses the deliberately different mechanics of the two components.
Official syllabus reference: [2]
45. Sequential gross-up of net contractor payments
A net-of-tax contractor promise requires reconstructing the revenue on which each tax component is imposed. If CIT applies to VAT-exclusive revenue and VAT applies to tax-inclusive revenue, first gross up the promised net amount for CIT, then gross up the resulting amount for VAT. Adding tax percentages to the net payment understates tax when the customer bears it. Verify the contractual tax-bearing clause and any excluded components before applying the formula. A gross-price contract instead deducts taxes from an existing total. The sequence follows the supplied base definitions rather than a universal gross-up shortcut.
Worked example: Assume net receipt is 950 units and both stipulated component percentages are 5% on their respective bases. VAT-exclusive revenue is 950 ÷ 0.95 = 1,000; total revenue is 1,000 ÷ 0.95 = 1,052.632. Taxes total 102.632 units.
Common mistake: Adding 10% to a net payment ignores tax-on-tax base interactions and does not reconstruct the gross revenue required by the contract.
Official syllabus reference: [2]
46. Digital suppliers: direct returns and customer withholding
Direct filing places the relevant declaration and payment obligations on the foreign digital supplier under the applicable registration arrangements. Build the return from covered Vietnamese revenue, recognising permitted refunds and distinguishing VAT-inclusive receipts from VAT-exclusive amounts. Calculate VAT and CIT separately using their stated bases; equal percentages do not necessarily imply equal liabilities. Reconcile the return to platform sales records and customer payments. Where verified direct-filing status removes customer withholding under the stated rules, retain evidence of that status so the same revenue is not taxed again through customer deduction.
Worked example: Assume verified direct-filing registration removes customer withholding and both taxes equal 5% of VAT-exclusive revenue after valid refunds. Vietnamese subscription sales are VND 1,200 million, with refunds of 200 million. The supplier declares revenue of 1,000 million, VAT of 50 million and CIT of 50 million. Customers withhold zero.
Common mistake: Treating registration as merely administrative misses its stated effect on who pays the tax and can cause duplicate supplier payment and customer withholding.
Official syllabus reference: [2]
47. Treaty relief and after-tax contract comparison
A treaty can affect the income-tax component of FCT where the relevant article and relief conditions apply; it does not automatically remove VAT. Analyse the domestic liability first, then apply only the treaty terms supplied, including any permanent-establishment or income-classification conditions. Compare contracts using total customer cost, contractor net receipt and recoverable VAT, rather than combined nominal percentages alone. Tax-bearing clauses can shift cost without changing the legal classification of the income. Keep treaty documentation and relief procedures distinct from the underlying commercial comparison. Detailed individual treaty provisions are outside the supplied syllabus scope.
Worked example: Assume supplied treaty terms remove a qualifying service’s CIT component but leave VAT unchanged. A customer comparing net-price offers recalculates the gross-up with only the remaining VAT component, rather than deducting the former CIT amount from an unchanged gross total.
Common mistake: Assuming treaty relief cancels every FCT component overlooks VAT’s separate character and the need to satisfy the actual income-tax relief conditions.
Official syllabus reference: [2]
Value added tax
48. Taxable, zero-rated, exempt and non-declarable supplies
VAT classification determines both output treatment and input recovery. A standard- or reduced-rate taxable supply produces output tax at its applicable rate. A zero-rated supply remains taxable but carries a zero output rate, potentially preserving related input credits when conditions are met. An exempt supply generally requires different input recovery analysis. Supplies for which calculation and declaration are not required form another category and should not automatically be treated as exempt. Identify the precise legal category before computing tax or apportioning inputs. A zero output amount alone does not reveal which classification applies or whether a refund is available.
Worked example: Two businesses each have no output VAT: one makes qualifying zero-rated exports and the other makes exempt supplies. Their identical output total does not establish identical input recovery. The export business may retain eligible credits while exempt-related inputs require separate restriction analysis.
Common mistake: Using zero-rated, exempt and non-declarable interchangeably can produce the right output total while giving the wrong input-credit and reporting treatment.
Official syllabus reference: [2]
49. VAT-exclusive valuation and layered import bases
VAT valuation begins with the prescribed taxable consideration rather than an arbitrary invoice total. For a VAT-inclusive domestic price, divide by one plus the applicable rate to isolate the VAT-exclusive base when that pricing rule applies. Imports can use a layered base that includes customs value and specified duties or other taxes. Calculate each preceding tax in order before applying VAT. Separate services outside the import base remain subject to their own analysis. Recoverability of import VAT is a later input-credit question and does not remove the initial payment or alter the valuation formula.
Worked example: Assume customs value is 1,000 units, duty is 100 and excise is 220 under supplied rules. An import VAT rate of 10% applied to their combined 1,320-unit base produces 132 units. A separately excluded domestic delivery charge is not added.
Common mistake: Applying import VAT only to customs value overlooks other components expressly included in the tax base and can materially understate border tax.
Official syllabus reference: [2]
50. The tax-credit method and period reconciliation
Under the tax-credit method, VAT payable is output VAT less eligible input VAT and any permitted brought-forward credit, with adjustments treated under the relevant period rules. Output revenue, output tax and gross customer receipts are different figures. Input VAT eligibility depends on substantive and documentary conditions, not merely an amount appearing on an invoice. Allocate restricted inputs before netting the totals. A negative net result can create a carried credit, but cash refund requires separate entitlement. Reconcile accounting sales and purchases to VAT schedules so discounts, returns, timing differences and blocked tax remain visible.
Worked example: Assume output VAT is 85 units, eligible current input VAT is 75 and an opening credit of 3 is available. Net payable is 7 units. A further 5 of blocked purchase VAT cannot be inserted into the credit merely to match cash paid.
Common mistake: Subtracting all purchase VAT from output VAT without eligibility analysis treats an invoice amount as an automatic tax credit and can understate payment.
Official syllabus reference: [2]
51. Direct VAT calculations and the correct taxable base
A direct VAT method differs from the output-minus-input credit method. Determine which prescribed direct basis applies to the activity, such as a defined added-value calculation or a turnover-based percentage where relevant. Do not assume accounting profit equals taxable added value: the rule can specify particular selling and purchase amounts. Similarly, a direct percentage may already embody a simplified tax calculation rather than an ordinary output rate. Input VAT is not separately deducted as if the business used the credit method unless the governing treatment expressly provides it. Establish method eligibility before performing the arithmetic.
Worked example: Assume a direct added-value exercise defines taxable added value as qualifying sales of 500 units less qualifying purchases of 420, with tax at 10% of that difference. VAT is 8 units; it is not 10% of accounting profit after wages.
Common mistake: Calculating direct-method tax and then subtracting input VAT again mixes two methods and can grant a credit the prescribed calculation does not allow.
Official syllabus reference: [2]
52. Time of supply versus invoice and payment dates
The VAT tax point identifies the period in which output tax must be recognised. Relevant events can include transfer of goods, completion of services, invoicing or payment under the specific rule; these events should not be assumed interchangeable. Build a short chronology and apply the activity’s governing trigger. An unpaid sale can still create output VAT, while an advance may require special treatment rather than automatic recognition under a general rule. Invoice issuance obligations also require their own timing analysis. Correct tax points prevent shifting output tax between periods merely to match cash receipts.
Worked example: Goods are delivered on 28 December, invoiced on 3 January and paid on 20 January. If the supplied rule makes transfer the tax point, output VAT belongs to December. The later dates do not move the liability into January.
Common mistake: Using the cash receipt date for every supply can defer output VAT incorrectly where delivery, completion or another prescribed event determines the tax point.
Official syllabus reference: [2]
53. Lending income and separately supplied financial advice
Financial businesses can make supplies with different VAT consequences. Classify the actual service rather than treating every receipt earned by a lender as exempt. Under an exercise distinguishing exempt loan interest from taxable advisory fees, interest produces no output VAT and directly attributable lending input VAT is blocked. Advisory fees generate output VAT, while qualifying inputs directly supporting that advice remain creditable. Shared overhead inputs require the specified allocation method. Keep separate revenue and input schedules so that an exemption for lending does not incorrectly spread to distinct fee-based services.
Worked example: Assume interest is exempt and advisory fees carry 10% VAT. Interest of VND 240 million has VND 5 million direct input VAT, which is blocked. Advisory fees of VND 80 million generate output VAT of 8; qualifying advisory input VAT of 3 leaves VND 5 million payable.
Common mistake: Extending the interest exemption to separately supplied advice understates output VAT, while claiming lending inputs overlooks the restriction attached to exempt supplies.
Official syllabus reference: [2]
54. Documented samples and withdrawals for private consumption
A movement of goods without payment still requires a VAT classification. Distinguish documented promotional samples meeting the stated concession from goods withdrawn for private consumption. Under an exercise granting qualifying samples a zero taxable value, no output VAT arises on those samples. A private withdrawal can instead require output VAT using the specified comparable selling value, even though no customer pays consideration. Record quantities, purpose and valuation evidence for each movement. The result follows the applicable supply and valuation assumptions; neither the absence of cash nor the inventory cost determines it automatically.
Worked example: Assume documented promotional samples have zero taxable value, while private withdrawals use comparable VAT-exclusive selling value at 10%. Samples costing VND 30 million produce no output VAT. Goods withdrawn for an owner's holiday have cost 70 million and comparable selling value 110 million; output VAT is VND 11 million.
Common mistake: Using inventory cost for every free movement misses both the samples concession and the stipulated market-value base for private withdrawals.
Official syllabus reference: [2]
55. Invoice corrections, rebates and sales returns
Invoices document VAT transactions but errors and later commercial changes require the correct adjustment procedure. Distinguish a mistake in the original invoice from a later rebate, accepted return or disputed transaction. Establish the original supply, adjustment amount, tax rate and reporting period, then use the prescribed correction or replacement mechanism. A commercial refund does not automatically justify reducing output VAT without supporting conditions and records. Electronic invoices remain subject to mandatory content and usage rules. Preserve links between original and corrective documents so both supplier output adjustments and customer input adjustments can be traced consistently.
Worked example: A customer returns goods originally sold for 50 units excluding VAT at 10%. Assume the return and documentation qualify for current-period adjustment. The supplier reduces taxable sales by 50 and output VAT by 5, with corresponding customer-side analysis.
Common mistake: Deleting an original invoice without a traceable correction can break the audit trail and leave supplier and customer VAT records inconsistent.
Official syllabus reference: [2]
56. Input apportionment, carryforward and refund entitlement
Input VAT recovery starts with direct attribution: identify purchases serving creditable outputs, restricted outputs or non-business purposes. Shared inputs then require the prescribed allocation basis and any later adjustment. Calculate credit entitlement before asking whether an excess can be refunded or must be carried forward. Refund conditions can depend on the activity, period, evidence and other statutory requirements; an excess input balance alone does not establish cash repayment. Maintain the link between purchase documents, payment evidence and intended use. Exact thresholds and refund timing require supplied authority rather than assumptions based on the credit calculation.
Worked example: Assume direct creditable input VAT is 60 units and shared input VAT is 20, of which 75% qualifies. Total credit is 75. If output VAT is 50, the resulting 25-unit excess still needs a separate refund-entitlement assessment.
Common mistake: Treating every excess input balance as an immediate refund bypasses the separate conditions governing repayment rather than credit or carryforward.
Official syllabus reference: [2]
Employability and technology skills
57. Extracting usable facts from linked exhibits
Efficient digital tax work converts exhibits into a controlled set of facts with sources, periods and units. Read the requirement first, then identify the contracts, schedules and correspondence that establish each calculation input. Distinguish gross from net amounts, annual from monthly figures and tax-inclusive from tax-exclusive prices before transferring data. Cross-reference conflicting versions rather than silently choosing the most convenient number. A concise input schedule reduces repeated window switching and preserves the connection between evidence and conclusion. The skill is information handling within a technical task, not merely opening files or copying every available detail.
Worked example: A contract states a net contractor fee, while the payment schedule shows the customer’s gross budget. The candidate records both with clear labels and exhibit references, then determines which clause governs the requested FCT calculation before entering a revenue figure.
Common mistake: Copying the first visible amount into a calculation without checking its period, tax status and contractual meaning can produce a precise but irrelevant result.
Official syllabus reference: [2]
58. Spreadsheet references, percentages and unit integrity
A useful tax spreadsheet separates inputs, formulas and outputs, using references that preserve the intended calculation when copied. Relative references move with the formula; absolute references keep a common rate or parameter fixed. Store percentages consistently and label currency scales so amounts in VND, thousands and millions are not combined accidentally. Use formulas for derived values instead of repeatedly hard-coding totals. Round at the stage required by the task, retaining enough intermediate precision for gross-ups. A control calculation should test the economic relationship, not merely repeat the same formula in another cell.
Worked example: If taxable income is in B9 and a 20% tax rate is in B6, =B9*$B$6 calculates tax while keeping the rate fixed when copied. A separate check reconciles taxable income to accounting profit plus add-backs less eligible deductions.
Common mistake: Entering 20 where the formula expects 20% multiplies tax by one hundred, even though the surrounding income calculation may be correct.
Official syllabus reference: [2]
59. Controlled revisions across calculations and responses
Amending a digital answer requires identifying every dependent result, not only changing the visible input. A revised expense can affect taxable income, a credit cap, current tax and the final payment. Maintain one authoritative calculation and update narrative conclusions from it. When moving between exhibits, spreadsheet and written response, preserve cell references and requirement labels so work remains aligned. Before completion, check that the final answer uses the latest assumptions and that superseded text has been removed. This is a dependency-control skill: the objective is a consistent response after change, rather than a collection of individually plausible workings.
Worked example: A corrected foreign-income amount changes both gross taxable income and the source-specific credit ceiling. The candidate updates those linked calculations, recomputes the settlement and revises the written conclusion, instead of changing only the income line in the final table.
Common mistake: Updating the spreadsheet while retaining an earlier narrative balance leaves contradictory conclusions and obscures which figure represents the candidate’s final answer.
Official syllabus reference: [2]
60. Presenting tax workings as a decision-ready reconciliation
Professional presentation makes the tax base, adjustments, liability and settlement independently understandable. Use descriptive row labels, stated units and clear subtotals rather than an unexplained final figure. Show a zero or no-adjustment treatment where it resolves a relevant issue, and briefly explain judgement-dependent exclusions. Separate technical assumptions from established scenario facts. A concise recommendation should identify the resulting amount, action or comparison and connect it to the workings. Reconcile totals to source data and avoid decorative formatting that hides signs, periods or tax categories. The reader should be able to follow the calculation without reconstructing it.
Worked example: A CIT schedule shows accounting profit, individual add-backs, eligible losses, taxable income, tax at the supplied rate and provisional payments. A final sentence states the remaining amount payable, while a short note explains why a disputed expense was excluded.
Common mistake: Providing only a correct total prevents the reader from assessing the tax treatment, tracing assumptions or identifying whether an error offsets another error.
Official syllabus reference: [2]
Official syllabus sources
- ACCA Qualification structure and requirements | ACCA Global
- Taxation (VNM) - syllabus and study guide - June 2026 to June 2027 (PDF, 538KB)