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Vehicle Value Change and Depreciation Scenarios

Measure vehicle value change from an entered current value, or project a separate constant annual depreciation rate over your chosen period.

Use this result well

Inputs that matter
Acquisition basis (USD), Entered current value (USD), Elapsed years, Value source and vehicle context, and 3 more
Output to expect
Observed value change, Entered depreciation scenario
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Observed change

Keep the purchase and current-value basis consistent, including any decision about tax, fees and selling costs.

Loss = purchase basis − current value; loss % = loss ÷ purchase basis × 100

Average and projection

Observed annual average divides dollar change by elapsed years. The separate compounded projection allows fractional years and applies a constant entered rate.

Projected value = purchase basis × (1 − annual rate / 100)^years

Updated: September 2026

Example Scenarios

$35,000 purchase basis, $21,000 entered current value, three elapsed years.

→ $14,000 loss, 40%, and $4,666.67 average loss per year.

$30,000 basis, 10% annual decline for three years.

→ $21,870 projected value; this is an assumption scenario.

Common Mistakes to Avoid

Treating a percentage curve as an actual offer

Use current comparable evidence and inspection results when evaluating a vehicle.

Using sale proceeds as equity

Subtract remaining loan debt and applicable sale costs separately; the lease/buy comparison does this explicitly.

FAQ

Enter a dated comparable-value estimate, written offer or realized sale on a consistent basis. Record its source in the value note; the calculator does not select an appraisal.

Yes. A current value above the entered purchase basis produces negative value loss. A zero elapsed period has no annual average.

No. You enter a constant annual percentage and may test several cases. Real prices need not follow that curve.

Use Save planning case to store the completed inputs and result in this browser. Copy MD includes the inputs and interpretation; Download CSV contains the result breakdown. Keep copied Markdown separately for a portable record. Editing a case requires saving again; browser history is not cloud backup.

About Vehicle Value Change and Depreciation Scenarios

Observed value change uses a current value you supply. Constant-rate projection uses an explicit annual percentage and period. Neither mode is a live appraisal or a forecast based on vehicle age, mileage, condition or market data.