Updated
Using Depreciation calculator
Straight-line depreciation divides cost minus salvage value evenly over useful life.
This is a planning calculation, not a tax depreciation schedule. You supply useful life and salvage value; partial years are prorated and book value stops at salvage.
A worked example
With asset cost = 10000, salvage value = 1000, useful life (years) = 5, elapsed years = 2, the annual straight-line depreciation is 1,800.00 (rounded to two decimal places).
Before you use the result
This is a planning calculation, not a tax depreciation schedule. You supply useful life and salvage value; partial years are prorated and book value stops at salvage. Calculations keep full browser-number precision. Money amounts are displayed to two decimal places; other results use up to 12 significant digits. Very large values may lose precision.
Example results for asset cost
These examples use Salvage value: 1000; Useful life (years): 5; Elapsed years: 2. They are reference calculations, not recommended settings.
| Asset cost | Annual straight-line depreciation |
|---|---|
| 5000 | 800.00 |
| 10000 | 1,800.00 |
| 20000 | 3,800.00 |
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ToolOctopus. “Depreciation calculator.” Updated 2026-09-26. https://tooloctopus.com/depreciation-calculator.
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