Tax Advisor interview questions

I bridge accounting profit to taxable income by classifying every adjustment by its tax effect.

• Permanent differences, such as nondeductible fines, change the effective tax rate but never reverse.
• Temporary differences, such as different depreciation timing, create deferred tax because they reverse in later periods.
• Tax losses, credits, and jurisdiction-specific deductions are shown separately so their expiry and recognition rules remain visible.

A permanent difference affects total tax expense, while a temporary difference only shifts tax between periods.

• A permanently disallowed expense never becomes deductible, so it changes the effective tax rate reconciliation.
• Accelerated tax depreciation is temporary because the book and tax carrying amounts converge over the asset's life.
• Only temporary differences produce deferred tax assets or liabilities under ASC 740 or IAS 12.

I compare each asset and liability's carrying amount with its tax base at the reporting date.

• A taxable temporary difference generally creates a deferred tax liability for tax expected on recovery or settlement.
• A deductible temporary difference generally creates a deferred tax asset, subject to the applicable recognition threshold.
• Measurement uses the enacted or substantively enacted rate expected when the difference reverses, not the current cash tax rate by default.

Current tax covers the period's tax payable or refundable, while deferred tax captures future effects of existing temporary differences.

• Current tax starts from taxable income under the return rules for the period.
• Deferred tax comes from changes in deferred tax assets and liabilities between reporting dates.
• Total tax expense combines both, but cash tax can differ materially because deferred tax is noncash in the current period.

A complete provision ties current tax, deferred tax, and rate reconciliation into one supportable result.

• The current component includes tax payable, payments, credits, and prior-year true-ups.
• The deferred component rolls temporary differences, losses, credits, and any valuation allowance or recognition adjustment.
• The effective tax rate reconciliation explains material departures from the statutory rate, including permanent items and foreign rate differences.
• Disclosures cover uncertain positions, expiries, and other material judgments required by the reporting framework.

I use the reconciliation to explain why tax expense differs from accounting profit multiplied by the headline rate.

• Permanent items and nondeductible expenses usually create recurring rate impacts.
• Foreign rate differentials, tax credits, and tax holidays can lower or raise the consolidated rate.
• Changes in deferred tax recognition, uncertain positions, or enacted rates often create discrete period effects.
• Each material line should have a clear denominator effect and a traceable supporting calculation.

The tax base is the amount assigned to an asset or liability for future tax deductions or taxable amounts.

• For an asset, it is generally the amount deductible against future taxable benefits when the carrying amount is recovered.
• For a liability, it is generally the carrying amount less amounts deductible when the liability is settled.
• Comparing tax base with carrying amount identifies the temporary difference used in deferred tax accounting.

Deferred tax should reflect the rate and tax consequences expected when the underlying item reverses.

• The rate must be enacted or substantively enacted under the applicable reporting framework.
• Different rates may apply to ordinary income, capital gains, or distributed profits, so the recovery method matters.
• Scheduling is especially relevant when losses, rate changes, or jurisdictional limits affect particular reversal years.
• Deferred tax is generally not discounted even when reversal is expected many years later.

A tax loss can reduce current tax through carryback where allowed or create a potential deferred tax asset for future use.

• The usable amount depends on expiry dates, annual utilization caps, and restrictions after ownership changes.
• Losses must be tracked by entity, jurisdiction, character, and vintage because they are rarely interchangeable.
• A deferred tax benefit is recognized only to the extent required by ASC 740's valuation allowance model or IAS 12's probable-profit test.

They limit a deferred tax asset to the amount supported by expected future utilization.

• Under ASC 740, a valuation allowance reduces the asset when it is more likely than not that some benefit will not be realized.
• Under IAS 12, the asset is recognized only when sufficient future taxable profit is probable.
• Strong evidence includes reversing taxable differences and supportable forecasts, while a recent cumulative loss is significant negative evidence.
• The analysis must match the jurisdiction, entity, tax character, and carryforward period of the attribute.

Group regimes may allow entities to share losses or file together, but the legal conditions define which benefits actually transfer.

• Eligibility often depends on ownership thresholds, residence, elections, and continuous holding periods.
• Some systems consolidate taxable income, while others permit only specified loss or payment transfers.
• Intercompany transactions may be deferred or eliminated for tax, creating timing differences from standalone accounts.
• The provision should still allocate current and deferred tax consistently among legal entities under the group's policy.

Accounting consolidation eliminates intercompany profit, while tax law may recognize, defer, or reprice the transaction.

• A sale within the group can create taxable income in the seller even though consolidated book profit is eliminated.
• The buyer's tax basis may differ from the consolidated carrying amount, producing deferred tax.
• Transfer pricing rules still require an arm's-length price when the parties are legally separate.
• Withholding tax or indirect tax can apply even when the consolidated income statement shows no external revenue.

Tax allocation assigns the consolidated tax result to legal entities in a consistent and supportable way.

• A separate-return method shows what each entity would owe based on its own taxable results.
• Group benefits such as shared losses or credits need an explicit policy for which entity receives the value.
• Intercompany tax balances should agree with tax-sharing agreements and remain distinct from amounts payable to authorities.
• The policy affects entity accounts and settlements even though it does not change consolidated tax expense.

The transfer can create a new tax basis while the intercompany book gain is eliminated on consolidation.

• The consolidated carrying amount remains based on the group's original book basis.
• The buyer may receive a stepped-up or carried-over tax basis depending on local law.
• The resulting carrying amount versus tax base difference creates deferred tax at the buyer's expected recovery rate.
• Any special initial recognition or group-transfer exception must be assessed under the applicable reporting standard.

Reverse charge shifts the duty to account for VAT from the supplier to the customer.

• The customer records output VAT on the purchase and, if entitled, claims corresponding input VAT.
• It commonly applies to cross-border services and selected domestic sectors where collection risk is higher.
• A fully taxable customer often has no net VAT cost, but exempt or partially exempt customers can incur irrecoverable VAT.
• The invoice and return treatment must follow the customer's jurisdiction even when the supplier charges no VAT.

Place-of-supply rules identify which jurisdiction has the right to tax a transaction.

• Goods usually follow physical movement, with special rules for imports, exports, and chain transactions.
• Business-to-business services are often taxed where the customer belongs, commonly through reverse charge.
• Business-to-consumer services may follow the supplier, customer location, or the place of performance depending on the service.
• Correct classification comes before choosing a rate, registration, or invoicing treatment.

Input VAT is recoverable only to the extent the purchase supports taxable business activities and meets documentation rules.

• Costs directly linked to exempt supplies are normally blocked or restricted.
• Mixed overheads are apportioned under the jurisdiction's partial exemption method.
• Private use, entertainment, vehicles, and similar categories can face specific statutory blocks.
• A valid invoice and evidence of business use are usually required even when the economic link is clear.

Partial exemption allocates input VAT between recoverable taxable activity and restricted exempt activity.

• Directly attributable input tax is assigned first to taxable or exempt supplies.
• Residual overhead VAT is split using a standard turnover ratio or an approved special method.
• Annual adjustment rules true up provisional recovery to actual activity.
• Capital goods schemes may spread adjustments over several years when the use of major assets changes.

A fixed establishment can change which location receives or supplies a service and who accounts for VAT.

• It generally requires sufficient permanence plus human and technical resources capable of receiving or making relevant supplies.
• A postal address, subsidiary, or server alone does not automatically create one.
• The analysis focuses on which establishment actually uses or performs the service.
• The conclusion can change reverse charge, registration, invoicing, and reporting obligations.

Nexus is the minimum connection that lets a jurisdiction impose a tax or filing obligation.

• Physical presence through people, property, or inventory remains a common nexus trigger.
• Economic nexus can arise from sales or transaction thresholds without local premises.
• Income tax, sales tax, payroll tax, and other taxes may use different nexus standards.
• Treaty protection or national law can restrict nexus for some taxes but not necessarily for indirect taxes.