Toolkit ShelfUse this accumulated depreciation calculator to reconcile book value, replacement timing, and asset schedule assumptions before budget or reporting decisions.
Live calculator
$45,000 depreciable base across 3 completed years.
$50,000 cost less accumulated depreciation.
Accumulated depreciation as a share of depreciable base.
Keep book and tax depreciation schedules separate when useful life, method, convention, or salvage assumptions differ.
| Measure | Value |
|---|---|
| Method | Straight-line |
| Asset cost | $50,000 |
| Salvage value | $5,000 |
| Depreciable base | $45,000 |
| Current period depreciation | $9,000 |
| Accumulated depreciation | $27,000 |
| Book value | $23,000 |
| Remaining depreciable amount | $18,000 |
Accumulated depreciation is an accounting schedule, not market value. Pair it with maintenance cost, utilization, impairment checks, and replacement timing before making asset decisions.
Planning comparison only. Check estimates, omitted costs, timing, and constraints before making an operating decision.
Formula
Straight-line accumulated depreciation = ((asset cost - salvage value) / useful life) x completed years; book value = asset cost - accumulated depreciationThis is a planning estimate for book schedules. Tax depreciation, partial-year conventions, impairments, and disposal accounting may require separate treatment.
How to use
Example
Calculator use
Before relying on it
Details
Straight-line depreciation spreads this base evenly across the useful life.
Book value is an accounting carrying amount, not necessarily market value or replacement cost.
Keep book, tax, and management schedules separate when methods, conventions, or useful lives differ.
Benchmarks
Useful when the asset's benefit is expected to be consumed evenly over time.
Useful for front-loaded depreciation estimates while capping book value at salvage.
Useful for carrying-value checks, not for market valuation by itself.
Calculator accuracy
Straight-line accumulated depreciation = ((asset cost - salvage value) / useful life) x completed years; book value = asset cost - accumulated depreciation
Asset cost, Salvage value, Useful life, Completed years, Depreciation method
Business results depend on contracts, accounting treatment, taxes, payment timing, refunds, collections, and operating assumptions.
Catalog QA baseline on June 6, 2026. This date marks the catalog-wide automated and editorial QA baseline, not a tool-specific expert review.
Toolkit Shelf. Accumulated Depreciation Calculator. https://toolkitshelf.com/tools/accumulated-depreciation-calculator
FAQ
No. Depreciation expense is the period charge. Accumulated depreciation is the running total of those charges against the asset.
No. Book value is asset cost less accumulated depreciation. Market value depends on demand, condition, utilization, and replacement cost.
Use it as a planning check only. Tax depreciation can use different methods, lives, conventions, and rules, so keep tax schedules separate.
Leave passwords, account numbers, and private medical or tax information out of your report.