Car lease monthly payment calculator

Enter the negotiated vehicle price, the residual value written in the lease, the money factor, the number of months, and the down payment used as a capitalized-cost reduction. The result separates depreciation from the finance charge so you can see what drives the estimate. It excludes taxes and dealer or registration fees, making it a transparent comparison tool rather than a final contract quote.

Enter comparable lease figures

Start with the negotiated vehicle price, sometimes described as the gross capitalized cost when no other financed items have been added. Use the residual value as a currency amount, not a residual percentage. If a dealer gives you a percentage, multiply that percentage by the appropriate sticker price first and confirm which price the leasing company uses. Enter the money factor as the small decimal shown in the offer, such as 0.0021, rather than entering an annual percentage rate. The term must be a whole number of months. Finally, enter only the portion of cash paid at signing that actually reduces the capitalized cost as the down payment. Do not combine the first monthly payment, registration, acquisition fee, refundable security deposit, or taxes with that value. Keeping those categories separate is essential when comparing two offers because identical cash due at signing can hide very different reductions in financed cost. The calculator rejects combinations that would reduce the adjusted capitalized cost below the residual value.

Understand the monthly calculation

A lease payment has two main parts before tax. The depreciation charge pays for the expected loss in vehicle value during the lease. It is calculated by subtracting the residual value from the adjusted capitalized cost, then dividing that difference by the number of months. The finance charge compensates the leasing company for providing capital. It is calculated by adding the adjusted capitalized cost and residual value, then multiplying that sum by the money factor. The estimated monthly payment is the sum of those two unrounded amounts. Results are displayed to two decimal places, while the total of monthly payments is calculated from the unrounded monthly estimate to avoid compounding display rounding. A larger residual generally lowers depreciation, while a larger money factor raises the finance charge. A down payment lowers adjusted capitalized cost and therefore reduces both components, but it also places more money at risk if the vehicle is stolen or totaled early in the lease.

Use the estimate when evaluating an offer

Treat the result as a clean baseline for checking dealer worksheets and comparing scenarios, not as the exact amount that will appear on a contract. Real lease invoices may add sales or use tax, acquisition and documentation charges, registration, optional products, negative equity, or other financed amounts. Tax treatment also varies by jurisdiction: some places tax each monthly payment, while others tax a larger portion of the transaction upfront. Ask for an itemized lease worksheet and compare its adjusted capitalized cost, residual, money factor, and term with the values you entered. If the base payment differs, look for capitalized fees, rebates applied differently, or a marked-up money factor before assuming the arithmetic is wrong. Run alternatives with a smaller down payment, a different negotiated price, or a different term to see which lever changes the payment. For API use, each calculation costs $0.002; the same deterministic formula is used for every valid request.