Car depreciation calculator

A car loses part of its value every year. Enter the purchase price and the yearly rate to see its expected resale value.

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How to use it

  1. Enter purchase price, annual depreciation rate and years owned.
  2. The result appears straight away and updates as you edit.
  3. Copy the result, or copy a link that keeps the same values to share it.

How it is calculated

Value after n years = price × (1 − rate ÷ 100)^n. This is the declining-balance method: the rate applies to the value at the start of each year.

Example

Inputs: Purchase price = 100,000, Annual depreciation rate = 15 %, Years owned = 5 years. Result: Estimated value: 44,370.53; Total depreciation: 55,629.47; Total loss in percent: 55.63%.

Limits and caveats

  • The yearly rate is your assumption: cars usually lose more in the first year, and rates vary widely by model, market and condition.
  • Actual condition, mileage and accident history are not modeled.

Questions about this tool

Which rate should I use?

Compare local listings for the same model at 1, 3 and 5 years old and derive the rate from them. The 15% default is only a starting figure.

Why does the value never reach zero?

With declining balance, the rate applies to the remaining value each year, so the amount lost shrinks over time.

How do I get the rate from two prices I know?

Rate = 1 − (current value ÷ purchase price)^(1 ÷ years), then multiply by 100.