Car Depreciation Calculator
Estimate how much your car has depreciated and its current estimated value, using the straight-line depreciation method.
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This is a straight-line estimate — real-world depreciation is typically faster in the first few years and slower later (a declining pattern), so this may overstate value in year 1-2 and understate it in later years.
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How Car Depreciation Is Estimated
Vehicles lose value over time at a rate that varies by make, model, and market conditions — this calculator models straight-line percentage depreciation per year as a planning estimate.
How to Calculate Car Depreciation
Value After N Years = Original Value × (1 − Depreciation Rate)^N, floored at a minimum salvage value.
Car Depreciation Calculator Formula
- Value = Original Value
- For each year: Value = Value × (1 − Depreciation Rate)
- Final Value = MAX(Salvage Value, calculated Value)
What Depreciation Rate Should I Use?
This varies significantly by make and model — some vehicles hold value notably better than others. 15-20% per year is a commonly cited rough average for the first several years, but check specific resale data for your vehicle for a more accurate rate.
Car Depreciation Examples
$30,000 new vehicle, 15% annual depreciation, 4 years: Value ≈ $15,660.
Common Car Depreciation Estimation Mistakes
Using a single average depreciation rate across all vehicle types — luxury and economy vehicles, and specific models within each category, depreciate at meaningfully different rates. Assuming depreciation is perfectly linear year to year — real depreciation often front-loads more heavily in the first 1-2 years. Ignoring mileage, condition, and market demand shifts that can meaningfully move actual resale value away from a pure percentage model.
How to Use This Calculator
Enter the purchase price, an estimated salvage/resale value at the end of its useful life, the useful life in years, and how many years you've owned it.
Formula & Methodology
Straight-line depreciation spreads the loss in value evenly over the useful life: Annual Depreciation = (Purchase Price − Salvage Value) ÷ Useful Life. Current value is capped so it never estimates below your entered salvage value.
Example: $32,000 car, $8,000 salvage value, 10-year useful life, owned 4 years
Annual depreciation = ($32,000 − $8,000) ÷ 10 = $2,400/year. After 4 years: $32,000 − ($2,400 × 4) = $22,400 estimated current value.
Straight-line depreciation is a simplification — actual vehicle depreciation is non-linear (steepest in the first 1-2 years) and varies significantly by make, model, mileage, and condition. For an actual resale value, check current market listings or a vehicle valuation service.
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Related Guides
- How Car Depreciation Is Calculated: Methods, Rates, and True CostUnderstand how car depreciation is calculated. Covers the standard depreciation schedule (20% year 1), declining balance method, and how to estimate your car's future value.
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Frequently Asked Questions
- How is car depreciation calculated here?
- Using the straight-line method: the difference between purchase price and estimated salvage value is spread evenly across the useful life in years.
- Is straight-line depreciation accurate for cars?
- It's a simplification. Real cars typically lose value fastest in the first 1-2 years, then depreciate more slowly — for a precise resale estimate, check current market listings for your specific make and model.
- What salvage value should I use?
- A conservative estimate of what the car would be worth at the end of the useful life you enter — for example, scrap or high-mileage resale value.
Last updated 7/17/2026