4.1 Accounting Changes
Key Takeaways
- ASC 250 governs accounting changes, classifying them into changes in principle, changes in estimate, and changes in reporting entity.
- A change in accounting principle requires retrospective application, meaning prior period financial statements are restated and the cumulative effect is adjusted in opening Retained Earnings of the earliest period presented.
- A change in accounting estimate is handled prospectively, affecting the current and future periods with no restatement of prior period financial statements.
- A change in reporting entity is treated retrospectively, adjusting all presented prior periods to show the financial results of the new consolidated or combined entity.
- Changes in depreciation, amortization, or depletion methods are classified as changes in estimate effected by a change in principle and are applied prospectively.
Accounting Changes (ASC 250)
In financial accounting, consistency is a fundamental qualitative characteristic that allows financial statement users to compare a company's performance across different reporting periods. However, businesses operate in a dynamic environment, and there are situations where a change in accounting treatments, assumptions, or structures is necessary to provide more relevant and reliable financial information. ASC 250 (Accounting Changes and Error Corrections) establishes the framework for reporting these changes.
ASC 250 classifies accounting changes into three distinct categories:
- Change in Accounting Principle
- Change in Accounting Estimate
- Change in Reporting Entity
Understanding the theoretical differences and the practical reporting requirements (retrospective vs. prospective) is a high-yield topic on the CPA FAR exam.
1. Change in Accounting Principle
A change in accounting principle involves switching from one GAAP-compliant accounting method to another GAAP-compliant method. Examples include changing from the Last-In, First-Out (LIFO) inventory cost flow assumption to First-In, First-Out (FIFO), or changing from the completed-contract method to the percentage-of-completion method for long-term construction contracts.
The Rule of Justifiability
A company cannot change an accounting principle arbitrarily. Under ASC 250, a change in principle is allowable only if the entity can justify that the alternative principle is preferable. Preferability must be based on factors such as improved financial presentation, changes in economic conditions, or alignment with industry standards. The adoption of a newly issued accounting standard update (ASU) is also treated as a change in principle but is governed by the specific transition rules within that update.
Accounting Treatment: Retrospective Application
A change in accounting principle is accounted for using retrospective application. This means:
- Prior Period Financial Statements: All prior periods presented in the comparative financial statements must be restated to reflect the new accounting principle as if it had always been in use.
- Retained Earnings Adjustment: The opening balance of Retained Earnings for the earliest period presented must be adjusted for the cumulative effect of the change (net of tax effects) on periods prior to that date.
- Asset/Liability Adjustments: The carrying amounts of assets and liabilities affected by the change are adjusted as of the beginning of the earliest period presented.
Impracticability Exception
If it is impracticable to determine the cumulative effect of the change on prior periods (e.g., because of a lack of historical records), the change is applied prospectively from the earliest date practicable. A classic example is changing from FIFO to LIFO, where reconstructing historical inventory layers is often impossible. Under these circumstances, the ending inventory of the prior period becomes the opening LIFO layer of the current period, and no retrospective adjustments are made.
Worked Example: LIFO to FIFO Inventory Change
Assume Apex Corporation decides to change its inventory valuation method from LIFO to FIFO on January 1, 2026. The tax rate is 21%. The cumulative effect of the change on prior years' pretax income is determined to be an increase of $100,000 (meaning FIFO ending inventory is $100,000 higher than LIFO ending inventory on December 31, 2025).
To record the change on January 1, 2026, Apex records the following adjusting journal entry:
| Account | Debit | Credit |
|---|---|---|
| Inventory | $100,000 | |
| Deferred Tax Liability ($100,000 × 21%) | $21,000 | |
| Retained Earnings (Beginning) | $79,000 |
Note: The adjustment to Retained Earnings is presented net of tax ($79,000) on the Statement of Retained Earnings (or Statement of Stockholders' Equity) as a change in accounting principle.
2. Change in Accounting Estimate
A change in accounting estimate arises because of new information, subsequent developments, or additional experience that alters the expected future benefits or obligations associated with an asset or liability. Because estimates are inherent in the accounting process, changes are normal and recurring.
Examples of changes in estimates include:
- Adjusting the useful lives or salvage values of depreciable equipment.
- Updating the percentage used to estimate allowance for doubtful accounts.
- Revising warranty liabilities based on historical claims data.
- Adjusting inventory obsolescence reserves.
Accounting Treatment: Prospective Application
Changes in accounting estimates are accounted for prospectively. This means:
- No Prior Period Adjustments: Prior period financial statements are left untouched.
- Current and Future Periods: The effect of the change is allocated to the period of change (current period) and, if applicable, future periods.
Special Case: Change in Depreciation Method
If a company changes its depreciation, amortization, or depletion method (e.g., switching from double-declining balance to straight-line), this is technically a change in principle. However, GAAP treats it as a change in estimate effected by a change in principle. Under ASC 250, these changes are accounted for prospectively, exactly like a change in estimate, because the change is made in response to new information about the pattern of consumption of the asset's economic benefits.
Worked Example: Revision of Useful Life and Depreciation Method
On January 1, 2023, Delta Corp purchased machinery for $120,000 with an estimated useful life of 10 years and no salvage value. Delta used the straight-line method. Annual depreciation for 2023, 2024, and 2025 was $12,000 per year. On January 1, 2026, the carrying value (book value) of the machinery was:
On January 1, 2026, Delta determines that the remaining useful life of the machinery is only 5 years (rather than the 7 years originally remaining) and that the salvage value will be $5,000. Under prospective application, the new depreciation expense for 2026 and subsequent years is computed as:
The journal entry for December 31, 2026, and each of the next four years is:
| Account | Debit | Credit |
|---|---|---|
| Depreciation Expense | $15,000 | |
| Accumulated Depreciation | $15,000 |
No changes are made to the depreciation recorded in 2023, 2024, or 2025.
3. Change in Reporting Entity
A change in reporting entity occurs when the group of individual companies included in the financial statements changes, resulting in statements that are effectively those of a different entity.
Examples of a change in reporting entity include:
- Presenting consolidated or combined financial statements in place of the statements of individual companies.
- Changing the specific subsidiaries that make up the consolidated group.
- Combining individual businesses that previously reported separately.
Accounting Treatment: Retrospective Application
A change in reporting entity is accounted for retrospectively.
- Comparative Presentation: When the entity presents comparative financial statements, the statements of all prior periods presented must be restated as if the new entity structure had existed during those periods.
- Disclosures: The nature of the change and the reason for it must be disclosed, along with the effect of the change on income before extraordinary items, net income, and related per-share amounts for all periods presented.
Summary of Accounting Changes under ASC 250
| Type of Change | Accounting Treatment | Retrospective Restatement? | Adjustment to Earliest Retained Earnings? |
|---|---|---|---|
| Change in Accounting Principle | Retrospective | Yes | Yes (net of tax, beginning balance) |
| Change in Accounting Estimate | Prospective | No | No |
| Change in Reporting Entity | Retrospective | Yes | Yes (if comparative periods affected) |
| Estimate Effected by Principle | Prospective | No | No |
A company changes its inventory cost flow method from LIFO to FIFO. What is the correct accounting treatment for this change under ASC 250?
Which of the following describes the correct accounting classification and treatment for a change in depreciation method (e.g., from double-declining balance to straight-line)?
On January 1, 2026, a company revised the remaining useful life of a machine to 5 years (originally it had 8 years remaining) and estimated its salvage value to be $5,000. The machine was purchased on January 1, 2023, for $120,000 with an original useful life of 10 years, zero salvage value, and straight-line depreciation. What is the depreciation expense for the year ended December 31, 2026?