Free depreciation calculator
Work out an asset’s depreciation schedule and net book value in seconds — straight-line, declining-balance, double-declining balance or sum-of-years’-digits.
Asset details
| Year | Opening NBV | Depreciation | Accumulated | Closing NBV |
|---|---|---|---|---|
| 2026 | $10,000.00 | $1,800.00 | $1,800.00 | $8,200.00 |
| 2027 | $8,200.00 | $1,800.00 | $3,600.00 | $6,400.00 |
| 2028 | $6,400.00 | $1,800.00 | $5,400.00 | $4,600.00 |
| 2029 | $4,600.00 | $1,800.00 | $7,200.00 | $2,800.00 |
| 2030 | $2,800.00 | $1,800.00 | $9,000.00 | $1,000.00 |
Full-year convention: a full year of depreciation is charged in the first year. Figures are rounded to cents; the last year absorbs any rounding.
Jurisdiction note: this is book (accounting) depreciation. Tax depreciation follows local law — e.g. MACRS in the US, capital allowances in the UK, prescribed classes and rates in many other countries — so confirm tax treatment with your accountant.
How to calculate depreciation
Four steps. Every number is an input you control, and nothing leaves your browser.
Enter the asset’s purchase or capitalised cost.
Enter the estimated salvage or residual value at the end of its life.
Enter the useful life in years and choose straight-line, declining-balance, DDB or sum-of-years’-digits.
Review the year-by-year schedule and net book value, then export to CSV or PDF.
What you need to know
This free depreciation calculator gives you a complete year-by-year depreciation schedule for any fixed asset. Enter the cost, salvage (residual) value and useful life, pick a method — straight-line, declining-balance (also called written-down value or WDV), double-declining balance (DDB) or sum-of-years’-digits (SYD) — and the calculator shows the annual charge, accumulated depreciation and net book value (NBV) for every year, together with the formula it used.
Straight-line spreads the depreciable amount (cost − salvage) evenly across the useful life. Declining-balance applies a fixed percentage to the opening book value each year, front-loading the charge. Double-declining balance is the special case where the rate is twice the straight-line rate (2 ÷ life). Both declining methods ignore salvage when setting the rate but never depreciate below it; you can optionally switch to straight-line once that gives the larger charge, which is how many finance teams fully depreciate to salvage. Sum-of-years’-digits is an accelerated method that tapers more smoothly.
The calculator uses a full-year convention (a full year of depreciation in year one) and runs entirely in your browser. Tax depreciation follows separate, jurisdiction-specific rules — for example MACRS in the United States, capital allowances in the UK, or prescribed wear-and-tear classes elsewhere — so treat these results as book (accounting) depreciation and confirm tax treatment with your accountant.
Ready to move beyond the calculator?
Asetavo depreciates your whole register every month — compute a draft run, review it, then post it.
- Straight-line, reducing-balance, DDB, SYD, units, MACRS and UK capital allowances
- Separate book and tax schedules — tax runs never change book NBV
- Monthly runs: compute a draft, review, then post
Questions, answered
Ready to account for every asset?
Tag, track and audit everything you own — from a handheld scanner to a boardroom report.
No card required · Workspace ready in minutes · Simple USD pricing
