Car Lease Calculator
Deconstruct monthly lease payments into depreciation fee, finance rent charge, money factor conversion, and acquisition costs.
Deal Health Assessment
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Lease vs Traditional Auto Loan Analysis
A side-by-side comparison of holding the vehicle across the lease term, against buying it with a loan over the same term or a 72-month loan.
| Evaluation Vector | 36-Month Lease (Modeled) | 36-Month Loan Purchase | 72-Month Standard Financing |
|---|---|---|---|
| Monthly Payment | — | — | — |
| Cash Due at Signing | — | — | — |
| Retained Equity at Month 36 | — | — | — |
| Mileage Boundaries | — | Unlimited (depreciation impacts resale) | Unlimited |
| Maintenance Exposure | — | — | — |
| Total 3-Year Capital Outlay | — | — | — |
| Net Cost After Equity | — | — | — |
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The Exact Mathematics of Car Leasing
Leasing companies price a lease with two simple formulas: you pay for the value the car loses while you drive it, plus a finance charge on the money tied up in it.
1. Monthly Depreciation
The value the car is expected to lose, from the adjusted (net) capitalized cost down to the guaranteed residual value, spread evenly over the term.
Depreciation =
(Net Cap Cost − Residual) ÷ Term2. Finance Rent Charge
The lessor's charge for the money tied up in the car, applied to the sum of the starting and ending values each month.
Rent Charge =
(Net Cap Cost + Residual) × Money Factor3. The 2,400 Constant
Adding cap cost and residual counts the average balance twice (×2), the rate is monthly (×12) and APR is a percentage (×100): 100 × 12 × 2 = 2,400.
APR = Money Factor × 2,400
MF = APR ÷ 2,400How this calculator works
The net capitalized cost is the negotiated selling price minus your cap-cost reduction (down payment) and any manufacturer rebates. The residual value is a percentage of MSRP, as leasing companies set it. The base payment is the monthly depreciation plus the rent charge, and sales tax is either added to each payment or, where your state taxes leases upfront, charged at signing on the total of all payments. The acquisition fee is treated as paid at signing and the disposition fee as paid when you return the car. Leasing companies' own figures (and state tax rules) can differ, so treat the result as an estimate to check against the dealer's lease worksheet.
By Suhaib Hassan · Formula verified 27 Sep 2026 · How CalculatePilot verifies formulas →
How lease payments are structured
A lease payment has two components: a depreciation fee (covering the value the car is expected to lose during your lease) and a finance fee (essentially interest on the money tied up in the vehicle, similar to loan interest). This calculator breaks out both parts so you can see where your payment actually goes.
The residual value — what the car is predicted to be worth at lease end — is set by the leasing company based on the vehicle's expected depreciation curve. A higher residual value means less depreciation to pay for during the lease, which generally means a lower monthly payment.
Understanding money factor and APR
Leasing companies typically quote a 'money factor' rather than an APR, which can make comparing lease offers to loan offers confusing. Money factor converts to APR by multiplying by 2400 — so a money factor of 0.00125 equals roughly a 3% APR. This calculator takes the money factor directly and shows the equivalent APR next to it.
A lower money factor (or APR) directly reduces the finance fee portion of your payment — for well-qualified buyers, this is often negotiable, similar to negotiating an interest rate on a car loan. If buying makes more sense for you, run the same vehicle through our Auto Loan Calculator for a side-by-side comparison.
Frequently asked questions
What's the difference between a money factor and an APR?
Money factor is a small decimal figure leasing companies use instead of a percentage rate — multiply the money factor by 2400 to get the roughly equivalent APR.
Does a higher down payment always lower my monthly lease payment?
Generally yes, since it reduces the capitalized cost being depreciated and financed — though putting a large down payment on a lease carries more risk than on a purchase, since that money isn't recoverable if the car is totaled early in the lease.
Complementary Auto & Capital Engines
Evaluate purchasing leverage, affordability constraints, and loan costs.