FreeByte

Straight-line depreciation calculator

Even write-down over an asset's life.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$
$

Yearly depreciation

$3,500

Monthly

$291.67

With these inputs, yearly depreciation comes to $3,500 over 6 years. Monthly works out to $291.67.

Total depreciable
$21,000
Book value after 3 years
$13,500

Over time · by useful life (years)

What moves the number · Yearly depreciation

Input−10%Now+10%
Asset cost$3,100$3,500$3,900
Salvage value$3,550$3,500$3,450
Useful life (years)$3,889$3,500$3,182

Solve for an input

Whatmakesequal

Compare scenarios

Save this set of inputs, change something, then save again to compare the outcomes side by side.

Even write-down over an asset's life.

A worked example

Starting figures

Asset cost
$24,000
Salvage value
$3,000
Useful life (years)
6

What it returns

Yearly depreciation
$3,500
Monthly
$291.67
Total depreciable
$21,000
Book value after 3 years
$13,500

How to read the results

With the defaults above, yearly depreciation works out at $3,500.

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