Calculate asset depreciation using straight-line or declining-balance methods with a year-by-year schedule.
USD
USD
Years
First Year Depreciation
$1,800/ year (fixed)
Constant annual depreciation expense.
Total Depreciation$9,000
Annual (Year 1)$1,800
Ending Book Value$1,000
Yearly Depreciation Schedule
Year
Depreciation
Accumulated
Book Value
1
$1,800
$1,800
$8,200
2
$1,800
$3,600
$6,400
3
$1,800
$5,400
$4,600
4
$1,800
$7,200
$2,800
5
$1,800
$9,000
$1,000
Shows annual depreciation expense, cumulative depreciation, and remaining book value for tax and accounting purposes.
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What is the Depreciation Calculator?
Depreciation is the allocation of an asset's cost over its useful life. A depreciation calculator determines how much of an asset's value you can deduct annually for tax purposes and accounting records. It supports two main methods: straight-line (equal expense each year) and declining-balance (accelerated expense, larger in early years). The calculator produces a schedule showing annual depreciation, accumulated depreciation, and book value—critical for tax filings, financial statements, and asset tracking.
How it works
For straight-line depreciation, the calculator divides depreciable base (cost minus salvage value) by useful life to find constant annual expense. For declining-balance, it applies a fixed rate (2 ÷ life) to the remaining book value each year, producing higher early expenses. The calculator loops through each year, updating accumulated depreciation and book value, then displays the full schedule. Book value never falls below salvage value.
Straight-Line: Annual Depreciation = (Cost − Salvage Value) ÷ Useful Life; Declining-Balance: Annual Depreciation = Book Value at Start of Year × (2 ÷ Useful Life)
Straight-line spreads depreciation evenly. Declining-balance front-loads expense using a rate of 2÷life (double the straight-line rate), accelerating early deductions. Both ensure the asset never depreciates below salvage value. Declining-balance reflects how many assets lose value faster initially (vehicles, machinery).
Annual Depreciation: $4,500 | Year 1 Book Value: $95,500 | Year 20 Book Value: $10,000
Building or long-life asset. Stable deduction over decades for consistent accounting.
How to use the Depreciation Calculator
Enter the asset's original purchase cost in your chosen currency.
Input the salvage value (estimated resale or scrap value at end of life).
Set the useful life in years (how long you expect to use or benefit from the asset).
Select a depreciation method: Straight-Line (constant annual expense) or Declining-Balance (larger early expense).
Click 'Calculate' to compute first-year depreciation and generate a year-by-year schedule.
Review the schedule to see annual depreciation, accumulated depreciation, and remaining book value each year.
Benefits
Simplify tax planning: understand your annual depreciation deduction and adjust timing or purchase decisions.
Accurate financial reporting: asset book value on balance sheets matches depreciation schedules for audits and compliance.
Compare methods: straight-line vs. declining-balance reveals different tax impacts; choose the one that fits your cash flow needs.
Plan capital replacements: know when your asset's book value reaches salvage or disposal point, triggering replacement decisions.
Validate accounting records: ensure your own depreciation calculations match your accountant's or software's figures.
Small business advantage: properly depreciate machinery, vehicles, and equipment to maximize tax deductions.
Tips & common mistakes
Common mistakes
Using a salvage value higher than cost—salvage cannot exceed the original purchase price.
Confusing book value with market value—depreciation is an accounting measure, not what the asset actually sells for today.
Forgetting to adjust useful life for different asset classes—a vehicle is 5 years, a building 20–40 years, software 3–5 years.
Applying depreciation from purchase mid-year incorrectly—many methods assume a full year; partial-year rules vary by jurisdiction.
Tips
Use declining-balance for assets that lose value quickly (vehicles, computers); use straight-line for stable assets (buildings, furniture).
Group similar assets and depreciate them together; the calculator works for a fleet of vehicles or set of machines at the same cost.
Check your country's tax rules: some jurisdictions allow bonus depreciation or accelerated methods for certain assets; consult a tax advisor.
Export the schedule and file it with your tax return or provide to your accountant; documentation is crucial for audit defense.
Frequently asked questions
What is the difference between straight-line and declining-balance depreciation?
Straight-line allocates cost evenly across the useful life; depreciation is the same each year. Declining-balance applies a fixed rate to the remaining book value, so depreciation is larger in early years and shrinks over time. Use straight-line for steady-value assets; declining-balance for those losing value quickly.
Can I change depreciation methods after I've started?
Tax rules vary by jurisdiction, but changing methods mid-asset life is complex and often restricted. Choose your method at purchase based on expected usage and residual value. Consult a tax professional before changing.
Does book value ever go below salvage value?
No. The calculator ensures book value never falls below the salvage value you entered. Once accumulated depreciation reaches (Cost − Salvage), depreciation stops, and the asset is carried at salvage value.
What if I sell the asset before the useful life ends?
Depreciate the asset up to the sale date, then calculate gain or loss as (Sale Price − Current Book Value). If sold for more than book value, you recognize a gain; less, a loss. Adjust the useful life in the calculator to match your ownership period.
Is depreciation a real expense or just a tax deduction?
Depreciation is a non-cash accounting expense. It reduces reported profit on financial statements and reduces taxable income on tax returns, but no money actually leaves your account. It represents the cost of using up the asset's economic benefit over time.
Can I depreciate intangible assets like software or patents?
Yes, but the term is 'amortization' for intangibles and 'depreciation' for tangible assets like equipment. The math is the same. Useful lives for software are typically 3–5 years; patents, 5–20 years depending on expected legal or economic life.