What this calculator does
Depreciation (straight-line & declining) works out annual depreciation expense and remaining book value under two common methods. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaStraight-line = (Cost − Salvage) / Life; Declining balance: each year, Depreciation = Book value × (Factor / Life), floored at Salvage
The inputs explained
| Field | What to enter |
|---|---|
| Asset cost ($) | A number, measured in your currency. Starts at 60000. |
| Salvage value ($) | A number, measured in your currency. Starts at 5000. |
| Useful life (years) | A number, measured in years. Starts at 10. |
| Report on year | A number. Starts at 3. |
| Declining balance factor | A number. Starts at 2. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with asset cost
Every other input is held at the calculator’s starting values while asset cost varies. Select any row to load that scenario into the calculator.
How the answer changes with asset cost
| Asset cost ($) | Declining balance: book value after year 3 | Declining balance: depreciation in year 3 | Declining balance: accumulated depreciation |
|---|---|---|---|
| 30,000 | $15,360.00 | $3,840.00 | $14,640.00 |
| 45,000 | $23,040.00 | $5,760.00 | $21,960.00 |
| 60,000 | $30,720.00 | $7,680.00 | $29,280.00 |
| 90,000 | $46,080.00 | $11,520.00 | $43,920.00 |
| 120,000 | $61,440.00 | $15,360.00 | $58,560.00 |
| 180,000 | $92,160.00 | $23,040.00 | $87,840.00 |