Change in accounting estimate

An estimate revision starts with evidence and timing, not with a desired expense. Beacon originally used information then available to estimate its packaging press. After three years, maintenance records and a revised replacement plan support a $3,000 residual value and three remaining years. No fact indicates that Beacon ignored or misused earlier information.

Prospective allocation

The press has $36,000 cost and $18,000 accumulated depreciation at the change date:

$36,000 − $18,000 = $18,000 carrying amount
$18,000 − $3,000 revised residual = $15,000 remaining depreciable amount
$15,000 ÷ 3 remaining years = $5,000 per year

Prior depreciation remains $18,000. The revision changes the allocation from the change date forward. Recomputing the first three years using hindsight would misstate the stipulated fact pattern.

ASC 250-10-45-17 requires an estimate change to affect the period of change, future periods, or both, as applicable. It also rules out restating prior periods for that change. ASC 360-10-35-22 connects a review of depreciation estimates and method to the Topic 250 route.

Estimate change versus error

Suppose Beacon had possessed and overlooked a binding three-year contract limitation when setting the original life. The analysis could then be an error question because Beacon should have used that information at the earlier date. The label depends on evidence about what was known and how it was used. It does not depend on management's preferred presentation.

Analysis boundary

A lower future depreciation charge may affect margins and asset turnover, but it does not create current cash or prove improved operations. Compare the revision, its evidence, its period effect, and later actual outcomes. This concept does not cover every disclosure or every kind of accounting change.