Income Taxes and Tax Reporting

Introduction and context

Income tax accounting is not simply the calculation of tax payable to a revenue authority. It is an application of accrual accounting: the financial statements must reflect both the tax consequences of transactions already recognised and the tax consequences expected when assets are recovered or liabilities are settled. The central standard for this purpose is IAS 12 Income Taxes. Uncertain tax treatments are addressed by IFRIC 23, while tax effects arising in business combinations are integrated with IFRS 3 and other relevant standards.

The distinction between accounting profit and taxable profit creates the main technical challenge. Accounting profit is determined under financial reporting standards; taxable profit is determined under tax legislation. Their differences may affect only the current period or may reverse in future periods. The latter differences create deferred tax.

This chapter develops a framework for calculating current and deferred tax, recognising tax losses, accounting for business combinations and uncertain tax positions, reconciling effective tax rates, and evaluating tax reporting from ethical and governance perspectives.

Learning objectives

By the end of this chapter, a reader should be able to:

1. distinguish current tax from deferred tax;
2. identify taxable and deductible temporary differences;
3. calculate deferred tax assets and liabilities and recognise them appropriately;
4. evaluate tax losses, tax credits and valuation allowances;
5. account for tax effects in business combinations and changes in tax rates;
6. apply the probability and measurement requirements for uncertain tax treatments;
7. prepare and interpret an effective tax-rate reconciliation; and
8. assess tax reporting through professional, ethical and governance frameworks.

1. The architecture of income-tax accounting

1.1 Current tax

Current tax is the amount of income tax payable or recoverable in respect of taxable profit or tax loss for a period. It is measured using tax rates and tax laws enacted, or substantively enacted, by the end of the reporting period. Current tax includes adjustments for prior-period tax, where relevant.

A simplified calculation is:

The formula is a planning representation rather than a substitute for legislation. It assumes one tax jurisdiction, a single applicable rate, no loss utilisation restriction, and no special deductions or credits. In practice, taxable profit begins with accounting profit and is adjusted for permanent differences, temporary differences, exempt income, disallowed expenditure, capital allowances and other statutory items.

1.2 Deferred tax

Deferred tax recognises the future tax consequences of recovering assets and settling liabilities. It is based on temporary differences between the carrying amount of an asset or liability in the statement of financial position and its tax base.

The tax base of an asset is the amount attributable to that asset that will be deductible for tax purposes against future taxable economic benefits. The tax base of a liability is its carrying amount less amounts that will be deductible for tax purposes in future periods. If receipts relating to a liability have already been taxed, the tax base may equal the carrying amount; if they will be taxed later, the tax base may be nil or another amount.

1.3 Temporary differences versus permanent differences

A temporary difference reverses in one or more future periods. It gives rise to deferred tax. A permanent difference affects accounting profit and taxable profit but never reverses; it does not give rise to deferred tax.

For example, a non-deductible fine is normally a permanent difference. Depreciation in the financial statements compared with tax depreciation is normally a temporary difference because the total deduction is expected to occur over time.

2. The balance-sheet approach

IAS 12 uses the balance-sheet liability method. The analysis begins with the carrying amount and tax base of each relevant asset and liability.

For an asset:

• carrying amount greater than tax base generally creates a taxable temporary difference and a deferred tax liability;
• carrying amount less than tax base generally creates a deductible temporary difference and a deferred tax asset.

For a liability, the direction is reversed in many common cases. A liability with a carrying amount greater than its tax base commonly creates a deductible temporary difference and a deferred tax asset.

The basic measurement equation is:

The temporary difference is the carrying amount less the tax base. The equation assumes that the relevant difference is measured consistently, the tax rate is applicable to the manner of recovery or settlement, and no recognition exception applies. A positive amount is not automatically a liability: classification depends on whether the difference is taxable or deductible.

2.1 Worked example: asset revaluation

Illustrative Entity owns land with a carrying amount of CU1,000,000 after a financial-reporting revaluation. Its tax base is CU700,000 because tax legislation has not recognised the revaluation. The enacted tax rate on disposal is 25%.

The taxable temporary difference is:

The deferred tax liability is:

The revaluation gain is recognised in other comprehensive income, so the related deferred tax is generally recognised in other comprehensive income rather than profit or loss, subject to the requirements of the relevant standard. If the land is later sold, the temporary difference reverses and the deferred tax liability is released.

2.2 Recognition principles

A deferred tax liability is generally recognised for taxable temporary differences, subject to specific exceptions, including certain initial-recognition situations and investments in subsidiaries, branches, associates and joint arrangements where the required control and reversal conditions apply.

A deferred tax asset is recognised for deductible temporary differences, unused tax losses and unused tax credits only to the extent that it is probable that taxable profit will be available against which they can be used. Evidence may include:

• a history of taxable profits;
• convincing forecasts of future taxable profits;
• reversal of existing taxable temporary differences;
• feasible tax-planning opportunities; and
• the expiry period and legal restrictions attached to losses or credits.

Recognition is reassessed at each reporting date. A previously unrecognised asset is recognised when sufficient evidence supports recoverability; a recognised asset is reduced when recovery is no longer probable.

2.3 Measurement and presentation

Deferred tax is measured using tax rates expected to apply when the asset is realised or the liability is settled, based on rates enacted or substantively enacted at the reporting date. Measurement reflects the expected manner of recovery: use, sale, or a combination. Deferred tax is not normally discounted.

Current and deferred tax are recognised in profit or loss unless they relate to items recognised outside profit or loss, such as other comprehensive income or equity, or arise from a business combination. Current and deferred tax assets and liabilities may be offset only when specified legal and economic conditions are met, including a legally enforceable right of set-off and the intention to settle on a net basis or simultaneously.

3. Tax losses and credits

Tax losses may be carried forward or, depending on legislation, carried back. A loss carryforward can create a deferred tax asset even though no tax is payable in the current period. However, the asset is not recognised merely because the loss exists.

Worked example: loss recognition

A company has unused tax losses of CU2,400,000. The tax rate is 25%, so the potential deferred tax asset is:

Management forecasts future taxable profits of only CU1,600,000 before the losses expire. If the losses can be used only against those profits, the recoverable portion is CU400,000:

The remaining potential benefit of CU200,000 is not recognised unless other convincing evidence supports recovery. Forecasts must be consistent with budgets, financing plans, market evidence and the entity’s operating capacity. Aggressive forecasts designed solely to support a deferred tax asset are a financial-reporting and governance risk.

A history of recent losses is strong negative evidence, although it is not an absolute prohibition. The entity must identify sufficiently persuasive evidence, such as a contracted transaction or reversal of taxable temporary differences, before recognising an asset in difficult circumstances.

4. Business combinations and group structures

In an acquisition accounted for under IFRS 3, identifiable assets acquired and liabilities assumed are measured at fair value. Their tax bases may not change at the acquisition date. This often creates temporary differences.

4.1 Acquisition-date deferred tax

Suppose an acquiree has identifiable customer relationships with a fair value of CU4,000,000 and a tax base of nil. At a 25% tax rate, the acquisition-date deferred tax liability is CU1,000,000. The liability reduces the net identifiable assets acquired and therefore affects goodwill, subject to the applicable business-combination requirements.

Deferred tax assets may also arise from acquired tax losses or fair-value adjustments. Recognition depends on the probability criteria and, for acquisition accounting, the rules concerning measurement-period adjustments and subsequent recognition.

4.2 Goodwill

A deferred tax liability is not recognised for the initial recognition of goodwill. This prevents an accounting cycle in which the liability increases goodwill and the increased goodwill creates another liability. Subsequent changes in deferred tax associated with goodwill require careful analysis because they may affect goodwill or profit or loss depending on their nature and the applicable standards.

4.3 Investments in subsidiaries and associates

Temporary differences may arise from undistributed profits or foreign exchange movements in investments. A deferred tax liability is generally recognised unless the parent or investor controls the timing of reversal and it is probable that the difference will not reverse in the foreseeable future. For deductible differences, recognition requires probable recovery through reversal or other taxable profits.

5. Uncertain tax treatments

Tax law can be ambiguous, disputed or subject to challenge by authorities. IFRIC 23 requires an entity to determine whether it is probable that the tax authority will accept an uncertain tax treatment. The assessment assumes that the authority will examine amounts to which it has a right and will have full knowledge of relevant facts.

If acceptance is probable, current and deferred tax are measured consistently with the tax treatment used or intended in the tax filing. If acceptance is not probable, the uncertainty is reflected using either:

• the most likely amount, when outcomes are binary or concentrated; or
• the expected value, when a range of outcomes is more representative.

The choice is made for each uncertainty, or for a group of uncertainties, using the method expected to better predict resolution. The estimate is reassessed when facts, law, audit activity or case law changes.

Illustrative uncertain-position analysis

An entity claims a tax deduction of CU10 million. Management estimates a 60% probability that the authority will accept the whole deduction, a 25% probability that CU6 million will be accepted, and a 15% probability that none will be accepted. If the expected-value method is appropriate, the expected accepted deduction is:

At a 25% tax rate, the expected current tax benefit is CU1.875 million. This is illustrative only: the probability assessment must be supported by legislation, professional advice, comparable cases and the facts available at the reporting date.

Uncertain tax positions should not be used as a concealed reserve. Management must document the technical position, assumptions, probability assessment, correspondence with authorities and sensitivity to changed facts.

6. Effective tax-rate reconciliation

The effective tax rate helps users explain why reported tax expense differs from the statutory rate applied to accounting profit. For a profitable entity:

The rate is meaningful only when the numerator and denominator are consistently defined. A loss-making entity may produce a mathematically unusual or non-comparable rate; in that case, a reconciliation of tax expense and expected tax at the statutory rate is more informative.

Worked reconciliation

An entity reports profit before tax of CU20 million. The enacted statutory rate is 25%. Tax at the statutory rate is CU5 million. The following items affect tax expense:

The effective tax rate is:

The reconciliation is not merely a disclosure exercise. It is an analytical control. Large unexplained changes may indicate altered business mix, tax-rate changes, uncertain positions, transfer-pricing disputes, unrecognised losses, tax incentives, errors or earnings-management behaviour.

7. A systematic reporting process

A robust tax close process can follow these steps:

1. map each jurisdiction, entity and applicable tax rate;
2. reconcile accounting profit to taxable profit;
3. identify tax payments, instalments, credits and prior-period adjustments;
4. prepare a temporary-difference schedule by asset and liability;
5. assess loss and credit utilisation using documented forecasts;
6. identify enacted or substantively enacted rate and law changes;
7. assess uncertain treatments with tax specialists and evidence;
8. determine the appropriate recognition location—profit or loss, OCI, equity or business combination;
9. assess offsetting, current/deferred classification and disclosures;
10. perform independent review and reconcile the tax note to the ledger and tax returns.

A temporary-difference schedule should include the opening balance, additions, reversals, rate changes, closing balance and statement-of-profit-or-loss or equity location. It should also identify the expected reversal period and the evidence supporting recoverability.

8. Integrated illustrative case

Background

Aster Manufacturing plc operates in two jurisdictions. For the year ended 31 December, it reports accounting profit before tax of CU12 million. Its domestic statutory tax rate is 25%, and its foreign subsidiary has a 20% rate. Aster has the following matters:

• accounting depreciation exceeds tax depreciation by CU1.2 million;
• an environmental provision of CU0.8 million is deductible only when paid;
• non-deductible penalties are CU0.2 million;
• the entity has unused tax losses of CU2 million, of which CU1.2 million is supported by probable future taxable profits;
• a fair-value uplift on machinery acquired in a business combination is CU3 million, with no corresponding tax-base increase;
• a tax deduction of CU4 million is uncertain, and professional evidence supports an expected accepted amount of CU2.8 million;
• the foreign subsidiary contributes CU2 million of the group’s accounting profit, before local tax.

Analysis

The non-deductible penalties are permanent and create no deferred tax. The depreciation difference is temporary. The environmental provision creates a deductible temporary difference because the accounting liability is recognised before tax deduction. The business-combination uplift creates a taxable temporary difference.

The deductible temporary differences are:

At 25%, the potential deferred tax asset is CU0.5 million, subject to recognition and any jurisdictional allocation. The business-combination deferred tax liability is:

The tax-loss asset supported by evidence is:

The uncertain deduction should not be treated as fully available if acceptance is not probable. The expected accepted amount is CU2.8 million, but management must first determine whether the expected-value method appropriately predicts the outcome. The disallowed expected amount is CU1.2 million; at 25%, it increases tax by CU0.3 million compared with full acceptance.

Current-tax computation (simplified)

A simplified domestic computation begins with accounting profit of CU12 million. Add the penalties of CU0.2 million and the uncertain deduction shortfall of CU1.2 million, while recognising that depreciation and the provision are temporary accounting-to-tax differences rather than permanent tax adjustments. The domestic taxable base before other statutory items is therefore CU13.4 million, if the CU2 million foreign profit is included in the consolidated accounting profit and the foreign component is separately removed and taxed at its local rate. A precise group computation requires entity-level tax returns, consolidation adjustments, foreign tax credits and local legislation; the simplified figures demonstrate the method rather than replace a tax return.

Outcome and reporting judgement

Aster should recognise current tax using the jurisdictional tax computations, deferred tax on the identified temporary differences, and only the supported tax-loss asset. The tax note should explain the principal rate-reconciliation items, the significant judgement concerning the uncertain deduction, the loss-recognition evidence and material changes from the prior year.

Learning points

1. A consolidated profit figure cannot replace entity- and jurisdiction-level tax analysis.
2. Permanent differences affect the effective rate but not deferred tax.
3. Temporary differences affect deferred tax even when no current tax is payable.
4. Deferred tax assets require evidence, not optimism.
5. Uncertainty must be measured and reassessed rather than hidden in a general provision.

9. Ethics, governance and professional judgement

Tax reporting involves competing pressures: legal compliance, shareholder expectations, cash management, public interest and reputational risk. Tax avoidance may be technically lawful yet inconsistent with an organisation’s stated values or the spirit of law. Tax evasion, concealment and falsification are unlawful and unethical.

A sound governance framework includes:

• board-approved tax strategy and risk appetite;
• clear accountability between the audit committee, finance function and tax specialists;
• documented technical positions and evidence thresholds;
• controls over tax-return and financial-reporting reconciliations;
• independent review of material judgements;
• escalation of uncertain or aggressive arrangements;
• protected whistleblowing channels; and
• transparent disclosure of material tax risks and judgements.

Professional accountants should apply integrity, objectivity, professional competence and due care, confidentiality, and professional behaviour. They should resist pressure to recognise unsupported deferred tax assets, defer a known tax expense, classify permanent differences as temporary, or use uncertain positions to smooth earnings.

The tax provision is particularly vulnerable to management bias because it combines technical law, forecasts and estimates. Audit committees should challenge the quality of forecasts supporting losses, the appropriateness of tax rates, the completeness of uncertain positions and the consistency of the effective-rate reconciliation.

10. Technology, data and contemporary developments

Tax departments increasingly use enterprise-resource-planning data, tax engines, workflow systems and analytics to calculate provisions and identify anomalies. Artificial intelligence can classify transactions, compare contracts and identify unusual rate-reconciliation movements. It cannot replace professional judgement about legal interpretation, probability, materiality or ethical acceptability.

Good controls over automated tax systems include validated data interfaces, version-controlled tax rates, access restrictions, audit trails, exception reports, human approval and periodic model testing. An AI-generated tax conclusion must be traceable to authoritative law and evidence. Confidential tax data should not be entered into public or uncontrolled systems.

Contemporary reporting also reflects increasing scrutiny of cross-border arrangements, transfer pricing, minimum-tax regimes, country-by-country reporting and tax transparency. These developments increase the importance of jurisdictional data, governance and clear communication with investors and regulators. The applicable legal and reporting requirements vary by jurisdiction and must be checked at each reporting date.

11. Limitations and critical evaluation

IAS 12 improves comparability by linking tax effects to statement-of-financial-position amounts, but it does not eliminate complexity. Key limitations include:

• tax bases depend on detailed and changing legislation;
• forecasts of future taxable profit are inherently uncertain;
• statutory rates may differ by recovery method or jurisdiction;
• deferred tax does not represent a discounted cash-flow estimate;
• effective tax rates can be distorted by losses, discrete items and acquisition accounting; and
• tax disclosures may remain technically compliant yet difficult for users to interpret.

Accordingly, users should read the tax note together with cash taxes paid, uncertain-position disclosures, jurisdictional information, deferred-tax movements and management’s discussion of tax risks. Analysts should not equate tax expense with cash tax or assume that a low effective tax rate is evidence of superior performance.

Chapter Summary

Income-tax accounting distinguishes current tax from deferred tax. Current tax reflects the period’s taxable profit or loss under enacted tax law, while deferred tax reflects future tax consequences of temporary differences between carrying amounts and tax bases. The balance-sheet approach requires careful identification of taxable and deductible differences, measurement at expected enacted rates, and recognition of deferred tax assets only when recovery is probable.

Tax losses and credits require evidence of future taxable profit. Business combinations commonly create deferred tax through fair-value adjustments, affecting net assets and goodwill. Uncertain tax treatments must be assessed for probable acceptance and measured using the most likely amount or expected value. Effective tax-rate reconciliations explain differences between statutory and reported tax rates and provide an important analytical control.

Reliable tax reporting depends on jurisdictional data, documented judgement, reconciliations, governance and ethical conduct. Technology can improve accuracy and monitoring, but professional accountability remains essential.

Key Terms

Current tax: Tax payable or recoverable for the current or prior periods under tax law.

Deferred tax: Tax consequences expected from future recovery or settlement of recognised amounts.

Carrying amount: Amount at which an asset or liability is recognised in the financial statements.

Tax base: Amount attributed to an asset or liability for tax purposes.

Temporary difference: Difference between carrying amount and tax base that reverses in future periods.

Permanent difference: Difference that does not reverse and therefore does not create deferred tax.

Taxable temporary difference: Temporary difference expected to produce taxable amounts on reversal.

Deductible temporary difference: Temporary difference expected to produce tax deductions on reversal.

Deferred tax liability: Future tax payable arising from taxable temporary differences.

Deferred tax asset: Future tax benefit arising from deductible differences, losses or credits.

Tax loss carryforward: Unused tax loss available to reduce taxable profits in later periods.

Tax credit: Amount that directly reduces tax payable under applicable law.

Effective tax rate: Total tax expense divided by profit before tax, expressed as a percentage.

Uncertain tax treatment: Tax treatment whose acceptance by the tax authority is uncertain.

Most likely amount: Measurement method based on the single outcome most likely to occur.

Expected value: Probability-weighted average of possible outcomes.

Substantively enacted rate: Tax rate sufficiently enacted to be used for reporting under applicable requirements.

Tax base recovery: The manner in which an asset is expected to be used or sold.

Tax governance: Structures and controls for directing, overseeing and reporting tax matters.

Permanent establishment: Taxable presence of an entity in a jurisdiction under applicable law.

Review Questions

Short Answer Questions

1. What is the difference between current tax and deferred tax?
2. Define the tax base of an asset.
3. Why does a non-deductible fine usually not create deferred tax?
4. When may a deferred tax asset for tax losses be recognised?
5. What are the two measurement methods for uncertain tax treatments?

Long Answer Questions

1. Explain the balance-sheet approach to deferred tax, using examples of taxable and deductible temporary differences.
2. Discuss the recognition, measurement and presentation of deferred tax assets and liabilities.
3. Explain how business-combination fair values can create deferred tax and affect goodwill.
4. Analyse the purpose and limitations of an effective tax-rate reconciliation.
5. Evaluate the ethical and governance responsibilities of an audit committee in tax reporting.

Analytical / Application Questions

1. An asset has a carrying amount of CU900,000 and a tax base of CU600,000. The enacted tax rate is 30%. Calculate and classify the deferred tax effect, assuming the difference is taxable.
2. An entity has CU5 million of tax losses, but evidence supports future taxable profit of only CU3 million. At a 25% tax rate, calculate the maximum supported deferred tax asset and explain what further evidence could support recognition of the balance.
3. A company reports profit before tax of CU10 million and tax expense of CU2.8 million. Calculate its effective tax rate and identify two possible reasons why it differs from a 25% statutory rate.

Multiple Choice Questions with Answers

Question 1

Which item most commonly creates a permanent difference?

A. Accounting depreciation differing from tax depreciation

B. A provision deductible only when paid

C. A non-deductible regulatory penalty

D. A fair-value uplift with no tax-base increase

Correct Answer: C. A non-deductible regulatory penalty

Question 2

An asset has a carrying amount of CU800,000 and a tax base of CU500,000. At a 25% tax rate, what deferred tax amount arises if the difference is taxable?

A. CU75,000 deferred tax liability

B. CU125,000 deferred tax liability

C. CU75,000 deferred tax asset

D. CU300,000 deferred tax liability

Correct Answer: A. CU75,000 deferred tax liability

Question 3

A deferred tax asset for unused tax losses is recognised when:

A. The losses have arisen, regardless of future profits

B. Future taxable profit is probable or another qualifying basis supports recovery

C. The entity has paid current tax in the same period

D. The statutory tax rate is expected to increase

Correct Answer: B. Future taxable profit is probable or another qualifying basis supports recovery

Question 4

Which tax rate is generally used to measure deferred tax?

A. The rate applicable when the original transaction occurred

B. The lowest historical rate in the jurisdiction

C. The rate enacted or substantively enacted and expected on reversal

D. The rate selected by management to minimise tax expense

Correct Answer: C. The rate enacted or substantively enacted and expected on reversal

Question 5

A CU2 million taxable temporary difference is expected to reverse at 30%. What is the deferred tax liability?

A. CU60,000

B. CU600,000

C. CU1,400,000

D. CU2,600,000

Correct Answer: B. CU600,000

Question 6

Under IFRIC 23, if acceptance of an uncertain tax treatment is not probable, measurement may use:

A. Only the amount filed in the tax return

B. The most likely amount or expected value, as appropriate

C. Zero tax expense in all cases

D. The maximum possible tax benefit

Correct Answer: B. The most likely amount or expected value, as appropriate

Question 7

Profit before tax is CU4 million and total tax expense is CU1 million. What is the effective tax rate?

A. 4%

B. 20%

C. 25%

D. 40%

Correct Answer: C. 25%

Question 8

In a business combination, a fair-value increase in an identifiable asset with no tax-base increase generally creates:

A. A deferred tax liability

B. A permanent difference only

C. A current tax refund

D. No tax consequence under any circumstances

Correct Answer: A. A deferred tax liability

Question 9

Which statement about deferred tax is correct?

A. It is normally discounted to present value

B. It is based only on cash taxes paid

C. It reflects future tax consequences of temporary differences

D. It applies to permanent differences

Correct Answer: C. It reflects future tax consequences of temporary differences

Question 10

Which is an appropriate governance control over tax reporting?

A. Allowing unsupported forecasts to recognise losses

B. Avoiding documentation of uncertain positions

C. Independent review of significant tax judgements

D. Using an AI output without human validation

Correct Answer: C. Independent review of significant tax judgements