Car Lease Rate (Money Factor) Calculator
Determine the hidden financing cost of your lease agreement.
How to Calculate Car Lease Rate
In the world of car leasing, you won't often see a traditional interest rate. Instead, dealers use a term called the Money Factor. Understanding how to calculate this rate is essential to ensure you aren't overpaying for your vehicle's financing.
The Lease Rate Formula
The calculation is based on the "Rent Charge," which is the total amount of interest you pay over the life of the lease. To find the Money Factor from your lease contract figures, use this specific formula:
Money Factor = Total Rent Charge / ((Net Capitalized Cost + Residual Value) * Lease Term)
Key Terms Explained
- Gross Capitalized Cost: The agreed-upon value of the vehicle plus any added fees or taxes.
- Capitalized Cost Reductions: Any cash down, trade-in equity, or rebates applied to lower the cost.
- Net Capitalized Cost: The "adjusted" amount being financed (Gross Cap Cost – Reductions).
- Residual Value: The predicted value of the car at the end of the lease term.
- Total Rent Charge: The sum of all monthly finance fees.
Example Calculation
Imagine you are leasing a car with a Net Capitalized Cost of $30,000 and a Residual Value of $18,000. Your lease term is 36 months and the total rent charge listed on the contract is $2,160.
- Add Net Cap Cost and Residual: $30,000 + $18,000 = $48,000.
- Multiply by the term: $48,000 * 36 = $1,728,000.
- Divide Rent Charge by that total: $2,160 / $1,728,000 = 0.00125.
To convert this Money Factor into a standard interest rate (APR), simply multiply by 2,400. In this case, 0.00125 * 2,400 = 3.0% APR.