Accumulated Depreciation Calculator

Written by Great Medico

Updated September 25, 2026 •2 min read

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A good business calculator should make the assumptions easier to see, not bury them. Accumulated Depreciation Calculator focuses on the specific inputs shown on the page and turns them into one usable summary.

What this calculator does

Accumulated Depreciation Calculator estimates straight-line accumulated depreciation, annual depreciation, and remaining book value from an asset’s cost, salvage value, useful life, and current age. Its scope is intentionally narrow: the calculation follows the visible inputs and does not pretend to include financial variables the calculator never asks you to provide.

How to use it

Enter Currency, Asset purchase cost, Expected salvage value, Useful life, and Asset age so far. Use figures from the same reporting period and the same accounting, workforce, inventory, or campaign definition wherever possible. The currency selector changes display currency only; it does not perform an exchange-rate conversion. Before using the result in a decision, recheck unusually large or negative values against the source data rather than assuming the calculator is correcting an inconsistent input.

How the calculation works

This version uses straight-line depreciation. Depreciable base = purchase cost − salvage value; annual depreciation = depreciable base ÷ useful life; accumulated depreciation = annual depreciation × asset age, capped at the depreciable base. Book value is purchase cost minus accumulated depreciation.

Example

For an asset costing $50,000 with $5,000 salvage value and a 5-year life, annual straight-line depreciation is $9,000. After 2 years, accumulated depreciation is $18,000.

How to interpret the result

Use the result as a compact description of the inputs you supplied. Compare it with the same metric calculated consistently over time or across alternatives; the number is most useful when its accounting period, denominator, and business definition remain stable.

Limitations and notes

This calculator applies straight-line depreciation to the entered cost, salvage value, useful life, and asset age. Book depreciation is an accounting estimate; tax depreciation can follow different rules, and an asset’s market value can differ substantially from its calculated book value.