The basic formula for a lease payment
A lease payment is built from four numbers: the vehicle's selling price, the money factor (a finance charge), the residual value (what the car is worth at lease end), and the lease term in months. The formula is: (Capitalized Cost + Acquisition Fee) minus Residual Value, divided by the lease term, plus the money factor times the sum of Capitalized Cost and Residual Value.
Written out: Monthly Payment = [(Cap Cost − Residual Value) ÷ Months] + [Money Factor × (Cap Cost + Residual Value)]
The first part of that equation covers depreciation—how much value the car loses over the lease. The second part is the finance charge, similar to interest on a loan. Both are paid monthly, and both depend on numbers you need to know before you can calculate anything.
Key Takeaways
- The lease payment formula divides the car's depreciation by the number of months, then adds a finance charge based on the money factor.
- Capitalized cost is the negotiated price of the vehicle, not the sticker price, and you can negotiate it down like you would a purchase price.
- The money factor is the lease company's finance charge, usually between 0.0015 and 0.0030, and can be negotiated before you sign.
- Residual value is set by the lease company and varies by vehicle, mileage allowance, and condition at return—it is not negotiable but you can shop between companies.
- The actual payment you see on a lease agreement includes taxes, registration, and dealer fees on top of the calculated base payment.
Capitalized cost: the price you negotiate
Capitalized cost, or "cap cost," is the price of the vehicle that the lease payment is based on. It is not the manufacturer's suggested retail price (MSRP) or the sticker price on the window. It is the price you negotiate with the dealer, just as you would if you were buying the car.
You can also reduce the cap cost by applying a down payment, a trade-in credit, or manufacturer rebates. If the MSRP is $35,000 and you negotiate the dealer down to $32,000, then apply a $3,000 down payment, your cap cost becomes $29,000. The lower the cap cost, the lower your monthly payment.
Some lease agreements also include an acquisition fee—a one-time charge from the lease company, usually $695 to $1,095. This fee is added to the cap cost in the payment formula, so it raises your monthly payment slightly.
Money factor: the finance charge rate
The money factor is the lease company's charge for financing the vehicle. It works like interest on a loan, but it is expressed as a decimal rather than an annual percentage rate (APR). A money factor of 0.0020 is roughly equivalent to a 4.8% APR, though the relationship is not exact.
Money factors typically range from 0.0015 to 0.0030 depending on your credit score, the lease company, and the vehicle. A lower money factor means a lower monthly payment. You can ask the lease company what money factor they are offering you, and you can sometimes negotiate it down, especially if you have good credit or are leasing a popular vehicle.
To convert a money factor to an approximate APR, multiply it by 2,400. So 0.0020 × 2,400 = 4.8%. This gives you a rough sense of what you are paying, though the exact APR depends on how the lease company calculates it.
Residual value: what the car is worth at the end
Residual value is the predicted worth of the vehicle when the lease ends. The lease company sets this number based on the vehicle model, the mileage allowance, the lease term, and expected wear and tear. A car with a higher residual value means lower depreciation, which means a lower monthly payment.
Residual values are not negotiable, but they vary between lease companies. A Toyota Camry might have a 55% residual value over three years with one company and 52% with another. Shopping between lease companies can save you money because of these differences. Residual value is usually expressed as a percentage of the MSRP or the cap cost.
The residual value also depends on the mileage allowance you choose. A lease with 10,000 miles per year will have a higher residual value than one with 15,000 miles per year, because the car will have fewer miles and be worth more at the end. If you exceed the mileage allowance, you pay a per-mile overage charge at lease end, typically $0.15 to $0.30 per mile.
Lease term: how many months you are paying
The lease term is the number of months you lease the vehicle, usually 24, 36, or 48 months. A shorter lease term means you divide the depreciation into fewer months, which raises the monthly payment. A longer lease term spreads the depreciation over more months, which lowers the monthly payment—but you also pay the money factor over a longer period.
The most common lease terms are 36 and 48 months. A 36-month lease typically has lower total interest paid but a higher monthly payment. A 48-month lease spreads the cost over more months, lowering the payment, but you pay finance charges for four years instead of three. The choice depends on your budget and how long you want to keep the car.
Putting the numbers together: a worked example
Suppose you are leasing a vehicle with these terms:
- MSRP: $35,000
- Negotiated cap cost: $32,000
- Down payment: $2,000 (reduces cap cost to $30,000)
- Acquisition fee: $795
- Money factor: 0.0020
- Residual value: 55% of MSRP = $19,250
- Lease term: 36 months
Step 1: Add the acquisition fee to the cap cost: $30,000 + $795 = $30,795
Step 2: Subtract residual value: $30,795 − $19,250 = $11,545
Step 3: Divide by lease term: $11,545 ÷ 36 = $320.69 (depreciation portion)
Step 4: Calculate the money factor portion: 0.0020 × ($30,795 + $19,250) = 0.0020 × $50,045 = $100.09
Step 5: Add the two parts: $320.69 + $100.09 = $420.78
Your base monthly lease payment is $420.78. The actual payment on your lease agreement will be higher because it includes sales tax, registration fees, and dealer documentation fees. Taxes vary by state and county, but they are typically applied to the monthly payment amount.
Why the actual payment differs from the calculated payment
The formula above gives you the base lease payment, but the number on your lease agreement will be higher. Lease companies and dealers add several charges on top of the calculated payment.
Sales tax is applied to the monthly payment in most states, raising it by 5% to 10% depending on your location. Registration and title fees are usually rolled into the first payment or spread across all payments. Dealer documentation fees, often called "doc fees," typically range from $150 to $500 and may be added to the first payment or included in the cap cost.
Some leases also include a disposition fee at the end—usually $395 to $595—charged when you return the vehicle. This fee may be disclosed upfront or may surprise you at lease end. Read the lease agreement carefully to see which fees are included in the monthly payment and which are charged separately.
Frequently Asked Questions
Can I negotiate the money factor?
Yes. The lease company sets the money factor based on your credit score and the vehicle, but you can ask for a lower rate, especially if you have good credit or are leasing a popular model. Some dealers will negotiate the money factor to close the deal. Always ask what rate you are being offered before you sign.
What happens if I go over my mileage allowance?
You pay an overage charge at lease end, typically $0.15 to $0.30 per mile depending on the lease company and vehicle. If you lease a car with 12,000 miles per year for 36 months (36,000 total miles allowed) and drive 40,000 miles, you owe 4,000 miles × $0.25 = $1,000. Estimate your annual mileage carefully before signing.
Is the residual value the same at every lease company?
No. Residual values vary between lease companies because they use different depreciation models and risk assessments. Shopping between companies can save you $50 to $150 per month on the same vehicle. Always compare lease offers from multiple dealers and lease companies.
What is the difference between cap cost and MSRP?
MSRP is the manufacturer's suggested retail price printed on the window. Cap cost is the actual negotiated price you and the dealer agree on. You negotiate cap cost down from MSRP just as you would when buying a car. A lower cap cost means a lower monthly lease payment.
Does a longer lease term always mean a lower monthly payment?
Yes, a longer term spreads depreciation over more months, lowering the payment. But you also pay the money factor over a longer period, so the total interest paid is higher. A 48-month lease has a lower monthly payment than a 36-month lease on the same car, but you pay more in total finance charges over the life of the lease.