ASC 250 accounting changes and error corrections

Accounting policies change, estimates move and mistakes come to light. ASC 250 decides whether the effect lands in the past, through restated comparatives, or in the present and future. This guide explains the four types of change, works through correcting a prior-year error, and covers preferability, impracticability, the difference between restatements and revisions, the disclosures, and how ASC 250 compares with IAS 8.

By Mirza Fahad Baig, Chartered Accountant. Reviewed by Hamza Fida, Chartered Accountant. 4 minute read.

Short answer

ASC 250 Accounting Changes and Error Corrections sets out how US GAAP companies account for and disclose four kinds of change. A change in accounting principle, from one generally accepted principle to another, is applied retrospectively to all prior periods presented unless impracticable, and a voluntary change must be justified as preferable. A change in accounting estimate, such as a revised useful life, is applied prospectively in the current and future periods, and a change in depreciation method is treated the same way, as a change in estimate effected by a change in principle. A change in reporting entity, such as presenting consolidated statements in place of individual ones, is applied retrospectively. A correction of an error in previously issued financial statements is a restatement: prior periods presented are corrected and the cumulative effect on earlier periods adjusts opening retained earnings. New standards follow their own transition rules. In this guide's example, an omitted depreciation charge reduces 2025 net income by $225,000 on restatement.

At a glance

Principle change
Retrospective
Estimate change
Prospective
Depreciation method
Treated as an estimate
Error
Restate prior periods
Voluntary change
Must be preferable
IFRS
IAS 8, very similar
ASC 250 accounting changes and error correctionsPrinciple change: Retrospective; Estimate change: Prospective; Depreciation method: Treated as an estimate; Error: Restate prior periods; Voluntary change: Must be preferable; IFRS: IAS 8, very similar.KEY FACTS AT A GLANCEASC 250 accounting changes and error correctionsPrinciple changeRetrospectiveEstimate changeProspectiveDepreciation methodTreated as an estimateErrorRestate prior periodsVoluntary changeMust be preferableIFRSIAS 8, very similarTax BakersASC 250 accounting changes and error correctionsPrinciple change: Retrospective; Estimate change: Prospective; Depreciation method: Treated as an estimate; Error: Restate prior periods; Voluntary change: Must be preferable; IFRS: IAS 8, very similar.KEY FACTS AT A GLANCEASC 250 accounting changes anderror correctionsPrinciple changeRetrospectiveEstimate changeProspectiveDepreciation methodTreated as an estimateErrorRestate prior periodsVoluntary changeMust be preferableIFRSIAS 8, very similarTax Bakers
Key facts at a glance, as set out in this guide.

What are the four types of accounting change under ASC 250?

Which kind of accounting change is it?Which kind of accounting change is it?Does it correct an error in previouslyissued financial statements?YesError correction:restate prior periodsNoIs it a change from one GAAP principleto another, not a change in estimate?YesChange in principle:retrospectiveNoIs it a revised estimate, including anew depreciation method?YesChange in estimate:prospectiveNoOtherwise: check for a reporting entity change
Errors and principles look back; estimates look forward.

Telling them apart matters because the treatment differs. Adopting a principle for transactions that are new or were immaterial before is not a change in principle, and a change that cannot be separated between principle and estimate is treated as a change in estimate.

How is a change in accounting principle applied?

  • Retrospectively: prior periods presented are recast as if the new principle had always applied, and the cumulative effect on earlier periods adjusts the opening balance of retained earnings of the earliest period presented.
  • Preferability: a voluntary change is allowed only if the new principle is preferable, and the reason must be disclosed. SEC registrants also need a preferability letter from their auditor.
  • Impracticability: if the effects cannot be determined for some periods, the new principle is applied from the earliest date practicable, or prospectively if even the cumulative effect cannot be determined.
  • Direct effects only: indirect effects, such as profit-sharing payments based on reported earnings, are recognized in the period of the change, not recast.
  • New standards: an accounting standards update brings its own transition method, which overrides ASC 250. See ASU 2024-03 for an example with a choice of prospective or retrospective transition.

How is a change in accounting estimate applied?

Prospectively, in the period of change and, if it affects them, future periods: no restatement. Revising a useful life, an allowance for credit losses or a warranty provision are typical. A change in depreciation, amortization or depletion method is a change in estimate effected by a change in principle: it is applied prospectively, but must still be justified as preferable.

ASC 250 in practice: correcting a prior-year error

While preparing its 2026 statements, a company finds that depreciation of $300,000 on equipment placed in service in 2025 was never recorded. Tax depreciation was claimed correctly, and the tax rate is 25%. The error is material to 2025, so the 2025 comparatives are restated.

2025 ($)As previously reportedAdjustmentAs restated
Depreciation expense300,000
Deferred tax expense(75,000)
Net income2,000,000(225,000)1,775,000
Retained earnings, December 31, 20258,000,000(225,000)7,775,000

Equipment is reduced by $300,000 and the deferred tax liability by $75,000, because the book basis falls closer to the tax basis. The 2026 statements present the 2025 column as restated, labelled as such, and the note explains the error, its effect on each line item and on per-share amounts, and the cumulative effect on retained earnings. Had the error arisen before the earliest period presented, the correction would go to that period's opening retained earnings. See deferred taxes under ASC 740.

What is the difference between a restatement and a revision?

In practice, a material error in prior statements leads to a reissuance restatement, often called a Big R: the prior statements are corrected and reissued, and an SEC registrant files a Form 8-K saying they should no longer be relied on. An error that was immaterial to the prior periods, but would be material if corrected entirely in the current period, is corrected by revising the comparatives the next time they are presented, a little r. SEC staff guidance in SAB 108 requires errors to be assessed under both the effect on the current year's income statement and the cumulative effect on the balance sheet. See ASC 855 subsequent events for errors found after the statements are issued.

What must be disclosed?

  • For a change in principle: its nature and reason, why the new principle is preferable, the method of applying it, and its effect on each affected line item and on per-share amounts.
  • For a change in estimate: its effect on income from continuing operations, net income and per-share amounts, if material.
  • For an error: that the statements are restated, the nature of the error, its effect on each line item and per-share amount, and the cumulative effect on retained earnings.

How does ASC 250 compare with IAS 8?

The frameworks match closely: changes in policy and errors are retrospective, changes in estimate prospective. IAS 8 has no preferability requirement, instead requiring that a voluntary change gives reliable and more relevant information, and it treats a change in depreciation method purely as a change in estimate. From 2027 IAS 8 is renamed Basis of Preparation of Financial Statements. See IAS 8 policies, estimates and errors and IFRS vs US GAAP key differences.

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Questions people ask

What does ASC 250 cover?

How to account for and disclose changes in accounting principle, changes in accounting estimate, changes in reporting entity and corrections of errors in previously issued financial statements.

How is a change in accounting principle applied under ASC 250?

Retrospectively to all prior periods presented, unless impracticable, and a voluntary change must be justified as preferable.

Is a change in depreciation method a change in principle or estimate?

Under ASC 250 it is a change in accounting estimate effected by a change in accounting principle: it is applied prospectively but must be preferable.

How is an error in prior financial statements corrected under ASC 250?

By restating the prior periods presented, with the cumulative effect on earlier periods adjusting opening retained earnings, and disclosing the nature and effect of the error.

Sources

Every fee, date and rule on this page was taken from these official and primary sources.

  1. FASB Accounting Standards Codification: Topic 250, Accounting Changes and Error Corrections
  2. Financial Accounting Standards Board
  3. Deloitte DART: Restatements and corrections of accounting errors
  4. Wipfli: ASC 250, correcting financial statement errors

Rules and fees change. If you are reading this long after October 21, 2026, confirm the figures with the source before you rely on them.

IAS 8IAS 8 accounting policies, estimates and errorsASC 855ASC 855 subsequent eventsASC 740Deferred taxes under ASC 740

More in ASC 250

TopicThe ASC 250 topic page

This guide is general information. It is not tax or legal advice for your situation.