Scope

ASC 740 governs the accounting for income taxes in financial statements. It applies to all entities subject to income taxes — federal, state, foreign — and establishes the framework for recognizing current tax expense, deferred tax assets and liabilities, valuation allowances, uncertain tax positions, and the related disclosures.

The Topic is organized into subtopics:

740-10 — Overall (including uncertain tax positions, formerly FIN 48)
740-20 — Intraperiod Tax Allocation (allocation between continuing operations, discontinued operations, OCI, and equity)
740-30 — Other Considerations or Special Areas (outside basis differences, foreign currency translation tax effects)
740-270 — Interim Reporting (annual effective tax rate method)
740-323 — Investments-Equity Method and Joint Ventures
740-740 — Tax Compliance Functions and Compensation

The asset-and-liability method

ASC 740 uses the asset-and-liability method — deferred tax assets and liabilities are recognized for the future tax consequences of temporary differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases. The objective is to recognize the future tax effects of events that have already been recognized in the financial statements or tax returns.

Two principal balances:

Current tax expense (or benefit) — the amount payable to (or refundable from) tax authorities for the current period's taxable income.
Deferred tax assets and liabilities — measured using enacted tax rates expected to apply in the periods in which the temporary differences are expected to reverse.

The annual tax provision is the sum of current and deferred tax expense, presented separately on the face of the financial statements or in the notes.

Temporary differences

Temporary differences arise when an item is recognized in the financial statements in a different period than it is recognized for tax. Common categories:

Depreciation and amortization — bonus depreciation, MACRS vs. book straight-line, Section 174 capitalization, Section 197 intangibles
Accrued liabilities — deductible when paid for tax (vacation, bonuses, warranty), accrued for book
Stock-based compensation — book expense over service period, tax deduction at exercise/vest at fair market value
Bad debt allowance — book allowance method, tax direct write-off method
Inventory reserves — book write-downs, tax recognition at sale or write-off
State income tax — accrued for book, deductible for federal when paid
Net operating loss (NOL) carryforwards — DTA equal to the tax benefit
Tax credits carryforwards — DTA equal to the credit value
Deferred revenue — taxable in some jurisdictions when received, deferred for book
Lease liabilities and ROU assets (post ASC 842) — book treatment differs from tax

Each temporary difference is scheduled by year of expected reversal, then aggregated and tax-effected at the applicable enacted rate.

Valuation allowance

A deferred tax asset is recognized in full initially, then evaluated for realizability. A valuation allowance is established for the portion of the DTA that is not "more likely than not" (a greater than 50% likelihood) to be realized. The evaluation considers all available evidence — positive and negative — including:

Negative evidence:

Cumulative losses in recent years (typically a 3-year cumulative loss is heavily weighted)
History of NOLs or tax credits expiring unused
Losses expected in early future years
Unsettled circumstances that, if unfavorably resolved, would adversely affect future operations

Positive evidence:

Future reversals of existing taxable temporary differences (DTLs)
Existing contracts or backlog that will produce more than enough taxable income to realize the DTA
An excess of appreciated asset value over the tax basis sufficient to realize the DTA
A strong earnings history exclusive of the loss creating the future deductible amounts

The "cumulative losses" presumption is particularly powerful. A company with three years of cumulative losses generally must establish a full valuation allowance unless it has objectively verifiable positive evidence that more than offsets the negative. Subjective forecasts of future profitability rarely overcome cumulative losses.

Valuation allowance reversals (when a previously-reserved DTA becomes realizable) flow through the tax provision and can drive material discrete items in the period of reversal.

Uncertain tax positions (FIN 48 framework)

ASC 740-10-25 through 50 (the former FIN 48) governs recognition and measurement of uncertain tax positions. Two-step framework:

Step 1 — Recognition. A tax position is recognized only if it is more likely than not to be sustained on examination by tax authorities, based solely on its technical merits, assuming the authorities have full knowledge of all relevant information.

Step 2 — Measurement. A recognized tax position is measured at the largest amount of benefit with greater than 50% likelihood of being realized upon ultimate settlement.

Note that "more likely than not" is the threshold for both steps but means slightly different things — Step 1 is binary (recognize the position or don't); Step 2 is the cumulative probability distribution of possible outcomes (recognize the largest amount with >50% cumulative probability).

Reserves for uncertain tax positions are presented as a long-term liability (or reduction of NOL carryforward or other DTA if directly linked). Interest and penalties on uncertain positions are accrued, with the policy election to classify in income tax expense or in interest expense / penalties.

The disclosure includes a tabular roll-forward of the gross unrecognized tax benefits (UTBs), classification of the amount that, if recognized, would affect the effective tax rate, and an estimate of the change in UTBs expected within 12 months.

Effective tax rate reconciliation

The notes to financial statements include a reconciliation of the statutory federal tax rate to the effective tax rate. Components typically include:

Federal statutory rate (21% for US corporations post-TCJA)
State income taxes, net of federal benefit
Foreign rate differential
Permanent differences (meals, fines, tax-exempt income, dividends-received deduction)
Stock-based compensation windfall benefit/shortfall (ASU 2016-09)
Research and development credit
Other tax credits
Valuation allowance changes
Uncertain tax position adjustments
Return-to-provision adjustments
GILTI / FDII / BEAT effects (multinationals)
Change in tax rates

The ETR reconciliation is one of the most analytically dense pieces of the financial statements. Sophisticated analysts derive substantial insight from year-over-year changes in the reconciling items — they reveal tax planning, geographic mix shifts, and changes in tax positions that don't appear elsewhere.

ASU 2023-09 — expanded disclosure (effective 2025)

The disclosure overhaul under ASU 2023-09 took effect for public business entities for annual periods beginning after December 15, 2024, and for other entities one year later. Major additions:

Disaggregated effective tax rate reconciliation — expanded categories required, with quantitative thresholds requiring further disaggregation of items meeting a 5% threshold (rate impact).
Disaggregated income tax paid — by federal, state, and foreign, and further by individual jurisdictions exceeding a 5% threshold.

The expansion is a meaningful disclosure increase. The categories are more granular than what most companies historically reported, and the jurisdiction-level cash tax disclosure is new.

Interim reporting (ASC 740-270)

For interim periods, tax expense is computed using the estimated annual effective tax rate (EAETR) applied to year-to-date ordinary income. Discrete items (items that don't recur or aren't part of ordinary operations) are recognized in the interim period in which they occur.

The EAETR is updated each interim period based on revised forecasts. The discrete vs. ordinary classification is judgmental — events like a major asset sale, a valuation allowance change, or a settlement of an uncertain tax position are typically discrete; recurring tax credits and the impact of permanent differences are typically part of the EAETR.

Common pitfalls

Schedule-of-reversal errors. Temporary differences should be scheduled by year of reversal to apply the correct enacted rate. Aggregating temporary differences and applying a blended rate without considering the timing produces wrong deferred tax balances when rates change over time (e.g., rate sunsets).
Valuation allowance evaluated in aggregate when it should be by jurisdiction. A company with profitable US operations and unprofitable foreign operations may have a US DTA that is fully realizable and a foreign DTA that needs a valuation allowance. Aggregating obscures the analysis.
Outside basis differences in foreign subsidiaries. ASC 740-30 requires recognition of deferred taxes on outside basis differences unless the indefinite-reinvestment exception applies (and the parent has sufficient evidence of the plan). The exception is judgmental and has become harder to defend post-TCJA given the GILTI inclusion.
State tax provision incompleteness. Multi-state operations require state-by-state apportionment, conformity analysis, and decoupling adjustments. A "blended state rate" applied to federal taxable income is a shortcut that produces wrong numbers and missed disclosures.
UTBs recorded at full exposure. The Step 2 measurement is at the largest amount with greater than 50% likelihood. Companies that record at full exposure overstate the liability and understate equity. Sustained patterns of UTB releases on settlement suggest the original measurement was over-conservative.
Return-to-provision adjustments treated as routine. When the actual return differs from the provision estimate, the difference flows through current-period tax expense unless it's a measurement period adjustment in a business combination. Large or recurring RTPs indicate provision process weaknesses that need fixing.

Operator note

The tax provision is one of the most consistently difficult areas for finance teams to execute well, because it sits at the intersection of two technical disciplines — tax law and GAAP — and the team typically doesn't have deep expertise in both. The provision file becomes the place where both sides have to agree, and the level of audit scrutiny is high.

At AGM, the multi-entity structure produces a provision complexity that's unusual for the $23M revenue scale — multiple legal entities across SC and NC, intercompany allocations, state apportionment, partner-level distributions for the LLC layers. The state side is where most of the audit attention sits — confirming nexus where it exists, computing apportionment correctly, tracking the conformity status of each state, and handling state-specific decoupling. Restaurant operations have heavy meals and entertainment exposure (50% deductible federal, varies by state), tip pooling implications for payroll tax, and the WOTC opportunity if the entity captures it.

At Intersil, the international tax provision was the dominant complexity — controlled foreign corporations, Subpart F inclusions, foreign tax credits, transfer pricing, and the manufacturing presence in Malaysia. The pre-TCJA regime made deferral planning meaningful; post-TCJA GILTI eliminated most of the deferral value, but the provision mechanics got more complex, not less.

At NBCU, the SOX 404 lens added another layer — every tax provision assumption needed to be documented, tested, and supportable in front of the external auditor and PCAOB inspectors. The tax control environment is its own specialty within SOX programs and routinely a source of significant deficiencies until it matures.

For consulting clients, the most common ASC 740 finding I see is valuation allowance under-evaluated. A company that's been marginally profitable for a few years carries a full DTA on its balance sheet without a recent rigorous evaluation of realizability. When losses appear, the cumulative-loss test triggers, and a full valuation allowance hits in a single period. The damage is muted if the analysis was happening continuously; the damage is severe if the company didn't see it coming. Build the valuation allowance file as a continuous-review document, not an annual exercise.

Related references

IRS Framework — the underlying federal tax law
ASC 805 — Business Combinations (deferred tax accounting in acquisitions)
ASC 718 — Compensation (stock-based compensation tax effects)
IAS 12 — Income Taxes (international counterpart, with similar but not identical mechanics)