Car Lease Calculator – Monthly Payment From Money Factor

A car lease payment looks simple, but it is built from four numbers most people never see: the capitalized cost, the residual value, the money factor and the term. This calculator puts them together the way leasing companies do, so you can check a dealer’s quote, compare offers and see the real interest rate behind the money factor.

How to use the car lease calculator

Enter the MSRP. The residual value is a percentage of it.
Enter the negotiated price (capitalized cost), including any fees rolled into the lease.
Enter your down payment and any trade-in credit.
Enter the residual value percentage and the money factor from the lease quote.
Choose the term and your sales tax rate.

The results show the monthly payment with tax, the depreciation fee, the rent charge, the equivalent APR and the total cost of the lease.

The car lease formula

adjusted cap cost = negotiated price − down payment
residual value = MSRP × residual %
depreciation fee = (adjusted cap cost − residual value) ÷ months
rent charge = (adjusted cap cost + residual value) × money factor
payment = (depreciation fee + rent charge) × (1 + sales tax)

The rent charge works like interest on the average amount tied up in the car. Multiplying the money factor by 2,400 converts it to an approximate APR.

Worked example

A car with a $40,000 MSRP, negotiated to $38,000, with $2,000 down, a 58% residual, a 0.0025 money factor, 36 months and 7% sales tax:

Adjusted cap cost: 38,000 − 2,000 = $36,000. Residual value: 40,000 × 0.58 = $23,200.
Depreciation fee: (36,000 − 23,200) ÷ 36 = $355.56.
Rent charge: (36,000 + 23,200) × 0.0025 = $148.00.
Base payment: $503.56. With 7% tax ($35.25), the payment is $538.80.
Equivalent APR: 0.0025 × 2,400 = 6%. Total cost: 538.80 × 36 + 2,000 = $21,396.96.

How to get a better lease

Negotiate the price, not the payment. Every $1,000 off the capitalized cost lowers the payment by about $30 before tax on a 36-month lease at this money factor: $27.78 less depreciation plus $2.50 less rent charge.
Ask for the money factor and check it against the buy rate your credit qualifies for. Dealers can mark it up.
Pick models with high residuals. They lose value slowly, so you pay less depreciation.
Watch the mileage allowance. Excess-mile charges of $0.15–$0.30 a mile can add up fast.

To compare leasing with buying, check the payment on a loan for the same car with the car loan calculator, and the full purchase price with the out-the-door car price calculator.

Common mistakes

Comparing the money factor with an APR directly. Convert it first: multiply by 2,400.
Forgetting tax. Most states tax the monthly payment. A few tax the full price upfront.
Ignoring fees at signing. Acquisition, documentation and registration fees can add hundreds of dollars.
Ending a lease early. Early termination usually means paying most of the remaining payments, so pick a term you’ll keep.

Frequently asked questions

How is a car lease payment calculated?

It has two parts. The depreciation fee is (adjusted capitalized cost − residual value) ÷ months. The rent charge is (adjusted capitalized cost + residual value) × money factor. Add them, then add sales tax if your state taxes lease payments.

What is a money factor?

It is the lease's interest rate in disguise. Multiply it by 2,400 to get the approximate APR. A money factor of 0.0025 is about 6% APR.

Why is a high residual value good for a lease?

You only pay for the depreciation between the price and the residual value. A higher residual means less depreciation, so a lower payment. Residuals are set by the leasing company and usually can't be negotiated, but the price and the money factor can.

Should I put a large down payment on a lease?

Usually not. If the car is stolen or totaled early in the lease, GAP coverage pays off the lease, but your down payment is generally lost. Keep the down payment small, or use a lease with first-month-only due at signing.

Last updated November 2, 2026 · By the ZTool team