Small business calculator
Accumulated Depreciation Calculator
Estimate straight-line depreciation for a fixed asset: enter cost, salvage value, useful life in years, and years elapsed. You get annual depreciation, accumulated depreciation, and net book value.
Inputs
Choose a depreciation method and enter the inputs for that method. Outputs include annual depreciation (current year), accumulated depreciation, and net book value.
Results
Depreciable base is cost minus salvage. Annual depreciation is depreciable base divided by useful life. Accumulated depreciation is annual depreciation times the lesser of years elapsed and useful life.
Example
Asset cost is $50,000, salvage is $5,000, useful life is 10 years, and 3 years have elapsed. Depreciable base is $45,000. Annual depreciation is $4,500. Accumulated depreciation after 3 years is $13,500. Net book value is $50,000 − $13,500 = $36,500.
How it works
Depreciable base = cost of the asset − salvage value. Annual depreciation = depreciable base ÷ useful life (when useful life > 0 and salvage ≤ cost). Effective years = min(years elapsed, useful life). Accumulated depreciation = annual depreciation × effective years. Net book value = cost − accumulated depreciation.
Related tools
Accounting Profit Calculator, Break-even Calculator, or back to the Small Business calculator list.