Free depreciation calculator

This free depreciation calculator gives you a complete year-by-year depreciation schedule for any fixed asset. Enter the purchase cost, salvage (residual) value and useful life, pick a method — straight-line, declining-balance (also called written-down value or WDV) or sum-of-years’-digits — and the calculator instantly shows the annual depreciation charge, accumulated depreciation and remaining net book value (NBV) for every period.

Straight-line spreads the depreciable amount evenly across the useful life and is the most common method for finance reporting. Declining-balance front-loads depreciation using a fixed percentage each year, which better matches assets that lose value quickly, like IT equipment. Sum-of-years’-digits is another accelerated method that tapers off more smoothly than declining-balance. All calculations run in your browser — nothing is uploaded — and you can export the schedule to CSV or PDF for your fixed-asset register or auditors.

For a full fixed-asset register with automated book-vs-tax depreciation across thousands of assets, see Asetavo’s depreciation feature and fixed-asset management use case.