Examples
Examples
Try the starting example
- Asset cost ($)
- 1000
- Residual floor ($)
- 100
- Declining-balance rate per period (%)
- 50
- Periods to display, at most 120
- 4
- Depreciation charge by period ($)
- P1: 500.00; P2: 250.00; P3: 125.00; P4: 25.00
- Closing book value by period ($)
- P1: 500.00; P2: 250.00; P3: 125.00; P4: 100.00
- Accumulated depreciation ($)
- $900.00
- Book value after displayed periods ($)
- $100.00
Try another scenario
- Asset cost ($)
- 1000
- Residual floor ($)
- 100
- Declining-balance rate per period (%)
- 50
- Periods to display, at most 120
- 2
- Depreciation charge by period ($)
- P1: 500.00; P2: 250.00
- Closing book value by period ($)
- P1: 500.00; P2: 250.00
- Accumulated depreciation ($)
- $750.00
- Book value after displayed periods ($)
- $250.00
Calculation method
Calculation method
Depreciation charge by period ($)
Round opening book×entered rate half-up to US cents, capped at opening book−residual floor.
Closing book value by period ($)
Opening book−capped charge.
Accumulated depreciation ($)
Cost−last book value.
Book value after displayed periods ($)
Report the displayed horizon’s closing book value; no forced final write-off beyond the entered rate.
Symbols and units
- a
- Asset cost ($)
- b
- Residual floor ($)
- c
- Declining-balance rate per period (%)
- d
- Periods to display, at most 120
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A cent-rounded declining-balance schedule with an explicit residual floor. It does not apply a statutory depreciation class, half-year convention or automatic switch to straight-line.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: depreciation methods and supplied estimates ↗
Background reading; this does not imply endorsement or independent review of SumFizz.