Depreciation Calculator
Work out yearly depreciation and book value by the straight-line or written-down value method.
- Book value at year end
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- Accumulated depreciation
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For learning and planning. Follow your accountant and current rules for official books.
What is the Depreciation Calculator?
This calculator shows the depreciation charged in a chosen year and the remaining book value of an asset. Pick straight-line, which spreads cost evenly, or written-down value, which applies a rate you type to the reducing balance each year.
How it works
Straight-line depreciation equals cost minus salvage value, divided by useful life. Written-down value depreciation applies your rate to the opening book value each year, so the charge falls over time. Book value never drops below the salvage value, and no depreciation is charged after the useful life ends.
How to use it
- Enter the asset cost, salvage value and useful life.
- Choose straight-line or written-down value.
- For written-down value, type the yearly rate.
- Enter the year number you want to see.
Depreciation Calculator — FAQ
Which rate should I use for written-down value?
Type the rate your accountant or the applicable rules specify for the asset. This tool does not assume any rate.
What is salvage value?
The amount you expect to recover when you sell or scrap the asset at the end of its life. It can be zero.
Why is depreciation zero in later years?
Once the useful life is over, or the book value reaches salvage value, no further depreciation is charged.