A car lease looks simple on the dealership's one-page quote — a single monthly number, due-at-signing, term length. But that monthly number hides two separate charges: depreciation (the value of the car you use up over the lease) and a finance charge (the lease's interest cost, expressed as a "money factor" instead of an APR). This calculator exposes both, so you can negotiate each part instead of haggling over one opaque number.
The depreciation portion is straightforward: (net capitalized cost − residual value) ÷ lease term. The net capitalized cost is your negotiated selling price minus any down payment, trade-in credit, or rebates. The residual value — what the lender says the car will be worth at lease end — is usually 55–65% of MSRP for a 36-month term and is set by the leasing company, so it's not negotiable. The higher the residual, the less depreciation you pay, which is why some brands advertise "strong lease deals" purely on high residuals.
The finance charge is where most buyers get confused: (net capitalized cost + residual value) × money factor. The money factor is just the lease's interest rate in disguise — multiply it by 2,400 to get the approximate APR. A money factor of 0.00210 equals about 5.04% APR. Because dealers can mark up the money factor as pure profit, always convert it to an APR in your head and compare it against current auto loan rates before signing. This calculator lets you enter either form and converts automatically.
Also watch the "due at signing" line: big down payments on a lease simply prepay depreciation — they lower the monthly payment but don't save you money overall, and that cash is gone if the car is totaled. A zero-down lease at a slightly higher monthly payment is usually the smarter structure.
How to use the Lease Payment Calculator
- Enter the MSRP and your negotiated selling price — negotiate the price first, the lease terms second.
- Add any down payment and trade-in — these reduce the capitalized cost and the monthly payment.
- Set the lease term (usually 24–48 months) and the residual percentage from the lease quote.
- Enter the money factor or APR from the dealer — convert between them to spot markups.
- Add your sales tax rate if your state taxes the monthly payment, then click Calculate.
Tips for getting a good lease deal
- Negotiate the selling price like a cash buyer first — every $1,000 off saves roughly $28/month on a 36-month lease.
- Convert the money factor to APR (× 2,400) and compare it to a bank auto loan rate — markups of 0.00050+ are common dealer profit.
- Residual value is non-negotiable, so compare the same car's lease across brands — high-residual models lease much cheaper.
- Minimize money due at signing; a totaled leased car doesn't return your down payment.
Why lease payments confuse even experienced buyers
Unlike a loan, where the payment formula is public knowledge, the lease payment blends depreciation and a finance charge on the average of two balances — a formula almost no buyer can reproduce at the dealership desk. Dealers exploit this by quoting "a payment" and moving the down payment, term, and money factor around until you agree. Running the numbers yourself beforehand turns the negotiation from "what payment do you want?" into "here's my capitalized cost, residual, and base money factor — print the contract" — which is where the real savings live.
Frequently asked questions
How is a monthly car lease payment calculated?
A monthly lease payment has two parts. The depreciation portion equals (net capitalized cost − residual value) ÷ lease term — the value you use up during the lease. The finance charge equals (net capitalized cost + residual value) × money factor — the lease's interest cost. Add the two together, then add any applicable sales tax.
What is a money factor in a car lease?
A money factor is the lease equivalent of an interest rate, usually written as a tiny decimal like 0.00210. Multiply it by 2,400 to get the approximate APR (0.00210 × 2400 ≈ 5.04% APR). Lower money factors mean lower finance charges, so always convert before signing.
What is residual value on a lease?
The residual value is what the lender predicts the car will be worth when the lease ends. It is set by the leasing company, not negotiable, and usually expressed as a percentage of MSRP — 55–65% is typical for a 36-month lease. A higher residual means less depreciation for you to pay, which lowers the monthly payment.
Is it better to lease or buy a car?
Leasing gives lower monthly payments and a new car every few years, but builds no equity and comes with mileage limits and wear charges. Buying costs more monthly but ends with an asset you own. Use this calculator to see your true monthly lease cost, then compare it against the loan payment on the same car.
All calculations are estimates for personal use. Lease terms vary by lender and state; this tool is not financial advice.