ClarityHow to use this tool
- Enter asset cost and expected residual value in the same currency.
- Enter useful life in years.
- Calculate annual expense and its monthly average, excluding partial-year conventions.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Asset cost | Numeric value. Unit: money. Must be greater than zero. | 10000 |
| Salvage value | Numeric value. Unit: money. Zero or positive. | 1000 |
| Useful life | Numeric value. Unit: years. Must be greater than zero. | 5 |
Result for these sample inputs
1800 currency units
- Depreciable amount
- 9000
- Average monthly depreciation
- 150
- Residual book value
- 1000
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Annual depreciation = (cost − salvage value)/useful life.
A 10,000 asset with 1,000 residual value over 5 years has a depreciable amount of 9,000. Expense is 1,800 per full year, or an average of 150 per month.
What to keep in mind
An accounting schedule, not a jurisdiction-specific tax depreciation calculation. A scenario calculation using your inputs, before unlisted fees or taxes. It is not a quoted product rate or personalized recommendation.
Common questions
Does the asset depreciate below residual value?
Not under this fixed straight-line model. The residual value is excluded from the depreciable amount.
Is the monthly average a tax deduction?
No. Tax eligibility, depreciation methods and partial-year rules depend on the applicable rules and are not calculated here.
Methodology maintained by ClarityKit. How these tools are built and checked.