Deferred Tax under Ind AS 12: Tax Bases and Temporary Differences

Deferred tax is best understood as a balance-sheet analysis of future tax consequences. The central comparison is between carrying amount and tax base, producing taxable or deductible temporary differences subject to the recognition requirements of Ind AS 12. For finance teams, the practical challenge is to translate that principle into a repeatable conclusion supported by evidence, rather than treating the standard as a year-end checklist. Treating deferred tax as a percentage adjustment to accounting profit misses the underlying logic and creates recurring errors. A robust approach connects commercial substance, the Ind AS 12 decision criteria, measurement evidence and presentation consequences in one coherent file.

Determine the tax base of assets

The technical anchor. The tax base of an asset is the amount deductible for tax purposes against taxable economic benefits when the carrying amount is recovered, with the answer depending on the applicable tax law. In application, finance should trace depreciation, deductions, exemptions and recovery assumptions to the relevant tax rules. A frequent failure mode is using the accounting net book value as tax base merely because both started with the same cost. The working paper should identify the relevant facts, source data, judgement and conclusion so that an independent reviewer can reproduce the decision.

Determine the tax base of liabilities

The accounting logic. The tax base of a liability is generally its carrying amount less amounts deductible for tax purposes in future periods in respect of that liability, with specific analysis for items such as revenue received in advance. Operationally, tax schedules should identify when expenses or revenue become deductible or taxable relative to accounting recognition. The main judgement risk is assuming every provision creates a deductible temporary difference without checking tax deductibility. Where the conclusion is sensitive to a contractual clause or estimate, the file should show the alternative outcome and why the selected treatment is more appropriate.

Classify temporary differences

The decision point. Taxable temporary differences generally give rise to deferred tax liabilities, while deductible temporary differences can give rise to deferred tax assets subject to recognition conditions. For implementation, the temporary-difference register should distinguish reversals from permanent differences that never affect future taxable profit. Where errors often arise is creating deferred tax on expenses that are permanently non-deductible. A concise review note should state the trigger, the rule applied, the evidence considered and the financial-statement consequence.

Use the expected manner of recovery or settlement

The core requirement. Measurement can depend on whether an asset is expected to be recovered through use, sale or another route when tax consequences differ. In a controlled close process, management's recovery strategy should be consistent with asset use, valuation assumptions and tax law. A common weakness is using one tax consequence when the carrying amount is clearly expected to be recovered differently. Evidence should be retained at the same level of detail as the accounting conclusion, with assumptions version-controlled and exceptions explicitly approved.

Reconcile the balance-sheet approach to tax expense

The principle. Current tax and deferred tax together explain income-tax expense, but deferred tax should be built from temporary differences and then reconciled to statement movements. For a review-ready file, entities should maintain opening-to-closing deferred-tax roll-forwards by underlying item. The risk to avoid is plugging deferred tax expense to achieve an expected effective tax rate. The accounting result should reconcile to the underlying contract, valuation or subledger rather than rely on a standalone spreadsheet conclusion.

Practical illustration

Assume machinery has a carrying amount of ₹80 but a tax base of ₹50 because tax depreciation has been faster than accounting depreciation. Recovery of the carrying amount through use would generally generate future taxable amounts beyond available tax deductions, creating a taxable temporary difference of ₹30 before applying the relevant recognition and measurement rules. The illustration is deliberately simplified: its purpose is to show how the accounting conclusion follows the underlying facts rather than to prescribe a single mechanical answer for every entity. Before posting an entry, the preparer should reconcile contractual terms, management's commercial intent, relevant estimates and system data to the specific accounting requirement. Where the outcome is sensitive, the file should show the key judgement and explain why the selected assumption is reasonable at the reporting date.

Documentation and control points

Professional application depends as much on process quality as technical knowledge. For this topic, a minimum control set should cover tax-base schedules; temporary-difference register; recovery-method review; tax-rate mapping; and deferred-tax roll-forward. Ownership should be clear between the business, finance and any legal, tax, valuation, credit-risk or other specialists whose evidence is required. Source data should be dated and version-controlled; manual adjustments should show preparer, reviewer, rationale and approval. The final accounting memorandum should connect the conclusion to the general ledger or relevant subledger, presentation and disclosures. If facts or estimates change, the entity should reassess the conclusion when required and preserve an audit trail explaining the change.

Closing perspective

Deferred tax becomes intuitive when every balance is explained as a future tax consequence of recovering an asset or settling a liability. The most useful way to apply Ind AS 12 is to treat the requirement as a decision framework rather than a compliance slogan. When the facts, accounting criteria, measurement evidence, controls and disclosure implications are considered together, the result is more consistent across reporting periods and easier to explain to management, auditors and users of the financial statements.