GAAP for Fixed Assets: Accounting Rules Explained

Under GAAP, an item is recognised as a fixed asset when it meets two criteria: it is probable that future economic benefits will flow to the entity, and the cost can be measured reliably. In practice, most organisations also apply a capitalisation threshold — below which items are expensed immediately.

Initial measurement is at cost — including purchase price, import duties, and directly attributable costs of bringing the asset to its intended location and condition. Subsequent measurement follows either the cost model or the revaluation model, depending on the entity's accounting policy.

Depreciation allocates the cost of an asset over its useful life. The method chosen should reflect the pattern in which the asset's future economic benefits are consumed. The three common methods are straight-line, diminishing balance, and units of production.

The critical operational connection is that depreciation relies on accurate useful life estimates — which in turn rely on condition data, maintenance history, and verification outcomes. When these are weak, depreciation calculations become unreliable.

The most frequent GAAP-related audit findings for fixed assets involve useful life reviews not being performed annually, fully depreciated assets still in use and never reassessed, disposed assets remaining on the register, and inadequate componentisation of complex assets.