Free Depreciation Calculator Online
Use this free depreciation calculator to compute annual depreciation and generate a complete depreciation schedule for any asset. Enter your asset cost, salvage value, and useful life, then choose from straight-line, declining balance, or double declining balance methods to see year-by-year book value changes.
Year 1 Depreciation
Enter your details to calculate
How This Depreciation Calculator Works
The depreciation calculator takes three inputs: asset cost, salvage value, and useful life in years. It then applies your chosen depreciation method to produce annual depreciation expense, accumulated depreciation, and remaining book value for each year of the asset life.
For straight-line depreciation, the calculator divides the depreciable base (cost minus salvage) evenly across all years. A $50,000 asset with $5,000 salvage value over 7 years gives $6,429 annual depreciation. The book value drops by exactly that amount each year until reaching the salvage value.
For accelerated methods, the depreciation calculator applies a percentage to the current book value rather than the original cost. This produces higher depreciation in early years and lower amounts later, which is useful for assets that lose value quickly and for maximizing early tax deductions.
Common Asset Useful Life Guidelines
IRS Publication 946 provides detailed guidelines. Enter your asset details in the depreciation calculator above.
Depreciation Methods Compared
Straight-Line
Equal depreciation expense every year. Best for assets that provide consistent value over time — office furniture, buildings, leasehold improvements. Simple to calculate and widely accepted for financial reporting. Use the depreciation calculator to generate the full schedule.
Declining Balance
Applies a fixed rate (1/life) to the remaining book value each year. Produces higher deductions early and lower ones later. Useful for assets like vehicles that lose value faster in the first few years. The depreciation calculator shows the declining curve clearly in the bar chart.
Double Declining
Uses twice the straight-line rate (2/life) for even more aggressive early depreciation. A 5-year asset depreciates at 40% of book value per year. Maximizes tax deductions upfront when the asset generates the most revenue. Model it with the depreciation calculator.
Frequently Asked Questions
Disclaimer: This depreciation calculator is for educational and planning purposes only. Actual tax depreciation may differ based on IRS rules, MACRS recovery periods, bonus depreciation provisions, and Section 179 elections. Consult a tax professional for compliance guidance.
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