Boneyard Tools

Car Depreciation Calculator

Enter the purchase price, an annual depreciation rate and a number of years to estimate what your vehicle will be worth and how much value it loses along the way. The rate is applied to the remaining value each year, so the tool models a steady reducing-balance decline and reports the ending value, the dollars lost and the percent gone.

How to estimate car depreciation

  1. Enter the purchase price in the Purchase price box.
  2. Enter an annual depreciation rate in the Annual rate box, or leave the 15 percent default.
  3. Enter the number of years in the Years box.
  4. Read the estimated value after that many years.
  5. Check the total dollars lost and the percent of value gone.
  6. Click Copy to save the summary line.

Examples

$30,000 car at 15 percent for 5 years

$30,000, 15% per year, 5 years
$13,311.16 left, $16,688.84 lost (55.6%)

$40,000 SUV at 20 percent for 3 years

$40,000, 20% per year, 3 years
$20,480.00 left, $19,520.00 lost (48.8%)

$25,000 car at 12 percent for 4 years

$25,000, 12% per year, 4 years
$14,992.38 left, $10,007.62 lost (40.0%)

Frequently asked questions

How fast does a new car depreciate?

Many vehicles lose the most value in the first year, often around 15 to 20 percent, then settle into a steadier annual decline. This tool applies one average rate to the remaining value each year.

What depreciation rate should I use?

Fifteen percent per year is a common average, but it varies widely by make, model, mileage and condition. Reliable, in-demand models hold value better and depreciate more slowly, so lower the rate for those.

Is this straight-line or reducing-balance depreciation?

It is reducing balance. The rate is applied to whatever value remains at the start of each year, not to the original price, so the dollar loss shrinks over time even though the percentage stays the same.

How is the value calculated?

Current value equals the purchase price times one minus the rate, raised to the number of years. Total depreciation is the purchase price minus that current value, and the percent lost is that loss over the purchase price.

Why is the first year so heavy in real life?

A car loses its new-car premium the moment it is sold and registered. A single flat rate smooths that cliff out, so this estimate can understate the very first year and slightly overstate later ones.

Can I model a partial year?

Yes. Enter a decimal number of years, such as 1.5, and the formula handles the fraction. This is useful for estimating value at trade-in time partway through a year of ownership.

Does this include taxes, fees or financing?

No. It estimates only the decline in the vehicle's market value. Loan interest, sales tax, registration and insurance are separate costs of ownership that this tool does not touch.

How do I model an electric or luxury car?

Adjust the annual rate to match. Some electric and luxury models have depreciated faster than average in recent years, so try a higher rate, while sought-after trucks and hybrids may warrant a lower one.

Is my data private and does it work offline?

Yes. Every figure is computed in your browser with no upload, so your price and ownership details stay on your device and the calculator keeps working with no connection.

Learn more

  • How car depreciation really works

    Why cars lose value fastest early on, what drives the annual rate, and how to use a reducing-balance estimate for buying and selling decisions.

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