📉 Depreciation Calculator
Calculate an asset’s annual depreciation expense and remaining book value using the straight-line method.
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What is Straight-Line Depreciation?
Straight-line depreciation spreads the cost of an asset evenly over its useful life, reducing its book value by the same amount each year until it reaches its estimated salvage value.
The Formula
Annual Depreciation = (Asset Cost – Salvage Value) ÷ Useful Life (in years). Accumulated Depreciation = Annual Depreciation × Years Elapsed. Book Value = Asset Cost – Accumulated Depreciation.
Note: This tool uses the straight-line method for general accounting education; other methods (declining balance, units of production) may be more appropriate for tax or GAAP reporting purposes.
Last reviewed August 2026