Things You'll Need:
- Pencil
- Paper
- Calculator
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Step 1
Begin by determining the salvage value of the car. This can be determined by taking 15% of the Kelly Blue Book value of the car (see resources for website). Also determine the value of the car when purchased and the Estimated Useful Life of the car.
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Step 2
Calculate the estimated useful life of the car by subtracting number of years since its production from eight (8), the typical lifespan of a car.
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Step 3
Plug the values into the following formula: Cost of car -- Salvage Value / Estimated Useful Life = Annual depreciation value. Example: $12,500 - $1,875 / 8 = $1,328 per year.
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Step 4
Take the value that you calculated in Step 2 and multiply it by the number of years since you purchased the car, then subtract that value from the purchase value of the car to get the depreciated value. Example: $12,500 - (5 years x $1,328) = $5,860.













