Car Lease Calculator

A vehicle lease payment is built from depreciation, finance charge, taxes, and fees. This calculator follows that structure so you can see how the monthly payment changes when the negotiated selling price, residual value, money factor, down payment, rebates, trade-in credit, or tax rate changes. It is meant for comparing lease offers and understanding dealer worksheets, not for replacing the actual lease contract.

The form separates the most important lease inputs. MSRP drives residual value. Negotiated selling price starts the capitalized cost. Fees can be rolled into the lease. Down payment and rebates reduce the amount being financed, and trade-in credit reduces it further. The calculator then computes monthly depreciation, monthly finance fee, pre-tax payment, monthly tax, total payment with tax, total lease payments, and an implied APR-style comparison from the money factor.

How to use this calculator

Enter the vehicle MSRP and negotiated selling price from the quote. Add the lease term in months and the residual value as a percentage of MSRP. Enter the money factor exactly as quoted, such as 0.0020. Then add the sales tax rate, capitalized fees, down payment and rebates, and trade-in credit.

The calculator’s primary output is Estimated monthly payment with tax. Detail rows show the pre-tax payment, monthly sales tax, residual value, net capitalized cost, monthly depreciation fee, monthly finance fee, implied APR, and total lease payments. If you are comparing leasing against buying, use the auto loan calculator, loan calculator, and budget calculator. For value loss after purchase, see the car depreciation calculator.

Formula

Residual value is based on MSRP:

$\text{residual value} = \text{MSRP} \times \frac{\text{residual percentage}}{100}$

Net capitalized cost follows the form’s inputs:

$\text{net capitalized cost} = \text{selling price} + \text{fees} - \text{down payment and rebates} - \text{trade-in credit}$

Monthly depreciation is:

$\text{monthly depreciation} = \frac{\text{net capitalized cost} - \text{residual value}}{\text{lease term}}$

Monthly finance charge is:

$\text{monthly finance} = (\text{net capitalized cost} + \text{residual value}) \times \text{money factor}$

Then:

$\text{pre-tax payment} = \text{monthly depreciation} + \text{monthly finance}$

$\text{monthly tax} = \text{pre-tax payment} \times \frac{\text{sales tax rate}}{100}$

$\text{payment with tax} = \text{pre-tax payment} + \text{monthly tax}$

The calculator also reports:

$\text{implied APR} = \text{money factor} \times 2400$

Example: estimating a car lease payment

Use the default inputs: $42,000 MSRP, $39,000 selling price, 36 months, 58% residual, 0.0020 money factor, 7.5% sales tax, $900 fees, $3,000 down payment and rebates, and $0 trade-in.

Residual value is:

$\text{residual value} = \$42{,}000 \times \frac{58\%}{100\%} = \$24{,}360$

Net capitalized cost is:

$\text{net capitalized cost} = \$39{,}000 + \$900 - \$3{,}000 - \$0 = \$36{,}900$

Monthly depreciation is:

$\text{monthly depreciation} = \frac{\$36{,}900 - \$24{,}360}{36} = \$348.33$

Monthly finance fee is:

$\text{monthly finance} = (\$36{,}900 + \$24{,}360) \times 0.0020 = \$122.52$

Pre-tax payment is $470.85 after adding the depreciation and finance portions. Monthly sales tax is $35.31 at the entered 7.5% rate. Payment with tax is therefore $506.17 when rounded to cents. Total lease payments are about $18,222.02 over 36 months. The implied APR is 4.8%.

How lease inputs change the payment

The selling price and residual value pull the depreciation fee in opposite directions. A lower selling price reduces net capitalized cost, which lowers depreciation. A higher residual value means the car is expected to be worth more at lease end, so the lessee pays for less value loss. That is why two vehicles with the same MSRP can have very different lease payments if one has a stronger residual percentage.

The money factor controls the finance fee. Because the finance charge uses the sum of net capitalized cost and residual value, it can remain meaningful even when depreciation looks modest. A small change from 0.0020 to 0.0024 may seem tiny, but it increases the monthly finance charge on a large lease balance. The implied APR row gives a quick translation, though it is only an approximation.

Upfront cash lowers the displayed monthly payment, but it deserves caution. A down payment, rebate, or trade-in credit reduces net capitalized cost in this calculator. If the leased vehicle is totaled early, however, upfront cash may not be recovered the same way equity in a purchased vehicle might be. Many shoppers compare a low-drive-off lease with a higher monthly payment against a larger-down lease to decide which risk profile feels better.

Tips for comparing lease offers

• Ask for the money factor, residual percentage, MSRP, selling price, fees, rebates, and amount due at signing in writing.
• Compare total cash outlay, not just the monthly payment.
• Watch mileage limits, excess-mile charges, disposition fees, acquisition fees, wear standards, and insurance requirements.
• Confirm whether taxes are paid monthly, upfront, or by another local method.
• Use the same lease term and mileage allowance when comparing offers.
• Treat the calculator as a worksheet; the signed lease controls the final obligation.
• Save each quote version so changes in fees, rebates, or money factor remain visible.

Sources

• CFPB Regulation M — 12 CFR Part 1013, current through 2026-07-09; Defines consumer-lease disclosure terminology. Residual, money factor, fees, rebates, and tax treatment in this calculator are user-entered scenario assumptions, not lender terms.
• Calculation scope: The equations and assumptions described above are applied only to values entered in the form. No live rates, prices, tax rules, lender terms, or accounting classifications are fetched. Results are user scenarios, not quotes or prescribed classifications.