Depreciation Calculator

Calculate asset depreciation over time. Enter the asset cost, salvage value, useful life and method to see annual depreciation, the current book value and a yearly schedule.

Enter the asset cost, salvage value and useful life, then pick straight-line or double-declining balance and how long you've owned it. The calculator returns the annual depreciation, the current book value, the end book value and a yearly schedule.

Used for the current book value
Annual depreciation
Current book value
End book value

A depreciation calculator spreads an asset's cost over its useful life to reflect how it loses value. It supports straight-line (even spread) and double-declining balance (more depreciation early on), and builds a yearly schedule.

The maths

  • Straight-line: annual = (cost − salvage) ÷ life
  • Double-declining: each year's depreciation = book value × (2 ÷ life), never dropping below salvage

Straight-line is simplest and most common; double-declining front-loads depreciation for assets that lose value fastest when new.

Examples

  • $30,000 asset, $3,000 salvage, 5 yrs = $5,400/yr straight-line
  • After 2 yrs straight-line, book value = $19,200
  • Double-declining claims more in year 1, less later

Frequently asked questions

Which method should I use?

For accounting and tax, follow your local rules — straight-line is simplest and widely accepted; accelerated methods suit assets that lose value quickly. Check what your jurisdiction allows.

What is salvage value?

The estimated amount the asset will be worth at the end of its useful life. Depreciation only applies to the part of the cost above salvage.

Just for the giggles, much love.
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