Depreciation Calculator
Calculate annual depreciation using straight-line, double declining balance, or units-of-production for an asset.
Inputs
Year 1 depreciation
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Year N depreciation
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Annual average
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Total depreciation
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Ending book value
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About Depreciation Calculator
Which method to use?
Straight-line is simplest and most common for financial reporting. DDB and SYD are "accelerated" — more depreciation upfront, useful for tax purposes when allowed. US tax law uses MACRS, which is a variant of DDB.
Section 179 / bonus depreciation
US businesses can often deduct the full cost in year 1 via Section 179 (up to ~$1.2M) or bonus depreciation (60% for 2024, phasing down). Real tax depreciation often beats book methods.
Salvage value
The estimated value at the end of useful life. Straight-line and SYD subtract salvage; DDB ignores it until you would depreciate below it.