Depreciation Calculator
Free online depreciation calculator. 100% client-side.
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What is Depreciation Calculator?
A depreciation calculator builds the complete depreciation schedule for a fixed asset from its cost, salvage value, and useful life. It supports the three standard book methods - straight-line, declining-balance (with automatic switch to straight-line), and sum-of-years-digits - and outputs a year-by-year table of depreciation expense, accumulated depreciation, and ending book value that you can copy or export as CSV.
Key Benefits
- Compare all three standard methods instantly
- Automatic SL switch for declining-balance schedules
- Year-by-year book value table
- CSV export for Excel and accounting systems
- No signup, fully offline and private
Common Use Cases
- •Month-end and year-end closing schedules
- •Budgeting replacement of equipment and vehicles
- •Comparing methods before choosing an accounting policy
- •Teaching and studying depreciation in accounting courses
Build a Depreciation Schedule
- Enter the asset details: Type the purchase cost (e.g. 50000), the salvage value at end of life (e.g. 5000), and the useful life in years (1 to 100). Defaults of 50000, 5000, and 5 are preloaded.
- Pick a method: Choose Straight-line, Declining balance (set the factor — 2 gives double-declining), or Sum-of-years-digits; the summary cards and schedule update the moment anything changes.
- Read the schedule: Each row shows beginning book value, depreciation, accumulated depreciation, ending book value, and the rate — rows marked SL are years where declining balance switched to straight-line for a larger deduction.
- Copy or download: Use Copy for a formatted summary on your clipboard or Download CSV for depreciation-schedule-<method>.csv; Reset restores the default example.
Key Features
- Three depreciation methods: straight-line, declining-balance, and sum-of-years-digits
- Adjustable declining factor: 200% (double), 150%, or 125%
- Automatic switch to straight-line in later years for declining-balance
- Year-by-year schedule with book value and accumulated depreciation
- Copy summary or export the full schedule as CSV
- 100% client-side - no data leaves your browser
Frequently Asked Questions
Which depreciation methods does the calculator support?
Straight-line ((Cost - Salvage) / Life), declining balance with a chosen factor (2 = double-declining, switching to straight-line in later years when it yields more), and sum-of-years-digits. Switch methods in the dropdown and the schedule recalculates instantly.
Why do some rate cells in the schedule say SL?
In declining-balance mode the calculator automatically switches to straight-line for the remaining years whenever that produces a larger deduction, which is standard practice for accelerated depreciation. Those rows show SL instead of a percentage rate.
What input values are valid?
A positive cost, a salvage value from 0 up to the cost, a useful life of 1 to 100 years, and for declining balance a factor between 0 and 10 (2 is the usual double-declining). Invalid combinations show a validation message instead of a schedule.
Can I export the schedule, and is anything uploaded?
Copy puts a formatted summary on your clipboard and Download CSV saves depreciation-schedule-<method>.csv with Year, Beginning, Depreciation, Accumulated, and Ending Book Value columns. All math runs in your browser — no asset numbers are sent to a server.