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Core Depreciation and Amortization Concepts

Accounting terms for depreciation, amortization, straight-line depreciation, and systematic cost allocation.

Core Depreciation and Amortization Concepts covers depreciation, amortization, straight-line depreciation, and systematic cost allocation.

Use these pages when asset-cost allocation changes earnings, tax timing, cash-flow interpretation, capital intensity, or valuation adjustments. It sits inside Depreciation and Amortization, 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
AmortizationAllocation of intangible asset cost or loan principal over time, depending on the accounting or finance context.
Amortization of IntangiblesAmortization of intangibles is the process by which the cost associated with an intangible asset is expensed over the projected useful life of the asset.
DepreciateIn accounting, depreciation is the systematic allocation of the cost of an asset over its useful life. In economics, depreciation refers to a loss in market value.
DepreciationDepreciation is the systematic allocation of the cost of a tangible long-lived asset over the periods that benefit from using it.
Depreciation AccountingAccounting treatment that allocates tangible asset cost over useful life through periodic depreciation expense.
Depreciation and AmortizationDepreciation and amortization are accounting methods used to allocate the cost of tangible and intangible assets over their useful lives.
Straight-Line DepreciationStraight-Line Depreciation is a widely-used method of allocating the cost of a tangible fixed asset over its useful life.

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.

Amortization

Allocation of intangible asset cost or loan principal over time, depending on the accounting or finance context.

Amortization of Intangibles

Amortization of intangibles is the process by which the cost associated with an intangible asset is expensed over the projected useful life of the asset.

Depreciate

In accounting, depreciation is the systematic allocation of the cost of an asset over its useful life. In economics, depreciation refers to a loss in market value.

Depreciation

Depreciation is the systematic allocation of the cost of a tangible long-lived asset over the periods that benefit from using it.

Depreciation Accounting

Accounting treatment that allocates tangible asset cost over useful life through periodic depreciation expense.

Depreciation and Amortization

Depreciation and amortization are accounting methods used to allocate the cost of tangible and intangible assets over their useful lives.

Straight-Line Depreciation

Straight-Line Depreciation is a widely-used method of allocating the cost of a tangible fixed asset over its useful life.

Revised on Sunday, June 21, 2026