Depreciation Rates, Schedules, and Useful Life

Depreciation timing concepts used to set rates, schedules, useful lives, and accounting provisions.

Depreciation Rates, Schedules, and Useful Life covers depreciation timing concepts used to set rates, schedules, useful lives, and accounting provisions.

Use these pages when asset-cost allocation changes earnings, tax timing, cash-flow interpretation, capital intensity, or valuation adjustments. It sits inside Depreciation Methods and Conventions, so readers can move up when the broader accounting context matters.

Use the table below to choose the narrower accounting branch before applying a term to a statement line, model input, audit trail, tax schedule, covenant test, or management report.

What This Branch Covers

AreaUse it for
Depreciation RatePercentage or rate used to allocate depreciable asset cost over its useful life.
Depreciation ScheduleTimetable showing depreciation expense, accumulated depreciation, and remaining book value over time.
Depreciation SystemDepreciation systems are methods used to allocate the cost of tangible fixed assets over their useful lives.
Estimated Useful LifeThe term Estimated Useful Life refers to the period of time over which an asset is expected to remain functional and useful to the taxpayer.
Half-Year Convention for DepreciationThe half-year convention for depreciation is a methodological approach used in accounting to depreciate fixed assets acquired during a given fiscal year.
Provision for DepreciationAccounting allowance or expense recognized to reflect asset value consumed during a reporting period.

What to Check

  • Asset cost, useful life, residual value, placed-in-service date, method, convention, and accumulated depreciation or amortization.
  • Book policy, tax method, depreciation schedule, impairment history, disposal record, and recapture calculation.
  • Effect on EBIT, EBITDA, taxable income, book value, deferred tax, capex, and maintenance-versus-growth spending analysis.
  • Whether the figure is book depreciation, tax depreciation, depletion, amortization, or noncash add-back.
  • Comparability across methods, asset ages, reporting periods, and capital intensity.

Common Mistakes

  • Treating depreciation as current cash spending.
  • Ignoring differences between book and tax depreciation.
  • Comparing EBITDA without considering replacement capex and asset age.
  • Assuming accelerated depreciation changes economic useful life rather than tax or earnings timing.

Depreciation and amortization content is educational and does not provide accounting, tax, audit, legal, investment, or valuation advice.

In this section

Choose a subsection first. Deeper term pages live inside each subsection, which keeps large topic hubs readable.

Half-Year Convention

The MACRS half-year convention treats eligible property as placed in service or disposed of at the midpoint of the tax year.

Method Comparisons and Units of Production
Browse Accounting