Changes in accounting estimates are a crucial part of financial reporting. They occur when new information becomes available or circumstances change, affecting the inputs or assumptions used in making estimates. These changes impact various aspects of financial statements, from depreciation to bad debt expenses.
Accounting for changes in estimates is done prospectively, meaning they're recognized in current and future periods. This differs from changes in accounting principles, which are often applied retrospectively. Understanding these distinctions is key to accurately interpreting and preparing financial statements.
Changes in accounting estimates
Events triggering changes in estimates
- Changes in accounting estimates occur when new information becomes available or when there are changes in circumstances that affect the inputs or assumptions used in making the estimate
- Common events that trigger changes in accounting estimates:
- Changes in the useful life or salvage value of a depreciable asset (machinery, equipment)
- Changes in the collectibility of accounts receivable (customer bankruptcies, economic downturns)
- Changes in the amount of warranty obligations (product defects, recalls)
- Changes in accounting estimates can also result from the resolution of uncertainties:
- Settlement of litigation (court decisions, out-of-court agreements)
- Outcome of a contingent event (successful product launch, natural disaster)
- The estimation process often requires judgment and is based on the best information available at the time
- As new information becomes available, it may be necessary to update the estimate (revised sales projections, updated market data)
Prospective application of changes in estimates
- Changes in accounting estimates are accounted for prospectively, meaning that the change is recognized in the current and future periods affected by the change
- The effect of the change is included in the determination of net income or loss in the period of the change and any affected future periods
- The change in estimate is not applied retrospectively to prior periods, and previously issued financial statements are not restated
- The nature and reason for the change in estimate should be disclosed in the notes to the financial statements in the period of the change
- If the change in estimate affects several future periods, the effect on income from continuing operations, net income, and any related per-share amounts should be disclosed for the current period and any subsequent periods presented
Accounting treatment for changes in estimates
Prospective recognition in financial statements
- Changes in accounting estimates are accounted for prospectively, which means that the change is recognized in the current period and future periods affected by the change
- The effect of the change is included in the determination of net income or loss in the period of the change and any affected future periods
- The change in estimate is not applied retrospectively to prior periods, and previously issued financial statements are not restated
Disclosure requirements
- The nature and reason for the change in estimate should be disclosed in the notes to the financial statements in the period of the change
- Example: "The company revised its estimate of the useful life of its manufacturing equipment from 10 years to 8 years based on recent operational data and industry benchmarks."
- If the change in estimate affects several future periods, the effect on income from continuing operations, net income, and any related per-share amounts should be disclosed for the current period and any subsequent periods presented
- Example: "The change in the estimated useful life of manufacturing equipment is expected to increase depreciation expense by $100,000 per year for the next 8 years."
Impact on financial statements
Income statement effects
- Changes in accounting estimates can have a significant impact on a company's income statement
- A change in the estimated useful life of a depreciable asset will affect the amount of depreciation expense recognized each period, which in turn affects net income
- Example: Increasing the estimated useful life of an asset will result in lower annual depreciation expense and higher net income
- A change in the estimated uncollectible portion of accounts receivable will affect the bad debt expense recognized each period
- Example: Increasing the estimate of uncollectible accounts will result in higher bad debt expense and lower net income
Balance sheet effects
- Changes in accounting estimates can also impact the balance sheet
- A change in the estimated useful life of a depreciable asset will affect the carrying value of the asset on the balance sheet
- Example: Increasing the estimated useful life of an asset will result in a higher carrying value due to lower accumulated depreciation
- A change in the estimated amount of a warranty obligation will affect the warranty liability on the balance sheet
- Example: Increasing the estimate of warranty obligations will result in a higher warranty liability and a corresponding decrease in retained earnings
Impact on financial ratios
- Changes in accounting estimates can also affect key financial ratios, such as the debt-to-equity ratio or the return on assets ratio, which are used by investors and analysts to evaluate a company's financial performance and position
- Example: An increase in the estimated useful life of assets will result in a higher return on assets ratio due to lower depreciation expense and higher net income
Changes in estimates vs principles
Accounting treatment differences
- Changes in accounting estimates and changes in accounting principles both affect a company's financial statements, but they are accounted for differently
- Changes in accounting estimates are accounted for prospectively, while changes in accounting principles are generally accounted for retrospectively (with some exceptions)
- Changes in accounting estimates do not require restatement of prior period financial statements, while changes in accounting principles often require restatement of prior period financial statements to ensure comparability
Triggering events and justification
- Changes in accounting estimates are typically made in response to new information or changes in circumstances, while changes in accounting principles are made when a company adopts a different accounting method for a particular transaction or event
- Example of a change in estimate: Revising the useful life of an asset based on updated operational data
- Example of a change in principle: Switching from the LIFO to the FIFO inventory valuation method
- Changes in accounting estimates are considered a normal part of the accounting process and do not require justification, while changes in accounting principles must be justified as preferable and must be disclosed in the financial statements