Car Lease Calculator

About the Car Lease Calculator

Leasing a car means paying for depreciation rather than the full purchase price, but the math can still be easy to misread. Unlike a loan, lease payments are driven by the money factor (interest), residual value (predicted future value), and the negotiated capitalized cost.

Your monthly lease payment has three components: depreciation (the difference between the negotiated price and residual value, divided by months), a finance charge (based on the money factor, which is essentially interest), and sales tax. The money factor looks tiny — 0.00150 seems like nothing — but multiply by 2400 to get the equivalent APR of 3.6%. That conversion is crucial for comparison shopping.

This calculator breaks down every cent of your lease payment, showing exactly how much goes to depreciation, finance charges, and tax. It compares different lease terms (24 to 48 months), different money factors (interest rates), and shows your total cost of leasing including the often-forgotten due-at-signing amount. Use it before walking into a dealership to know exactly what you should be paying.

When This Page Helps

Use this to separate lease payment components before you negotiate. It shows how price, residual value, money factor, and taxes interact so you can compare offers on the same terms.

How to Use the Inputs

1. Enter the MSRP and your negotiated price (aim for 4-8% below sticker)
2. Set the residual value percentage (provided by the leasing company)
3. Enter the money factor from the dealer (ask specifically for this number)
4. Choose your preferred lease term (36 months is most common)
5. Add your down payment, trade-in, and any rebates
6. Include local sales tax rate and dealer fees
7. Compare terms and money factors in the sensitivity tables

Example Calculation

Tips & Best Practices

• Negotiate the selling price FIRST, then discuss the lease — a lower cap cost reduces every monthly payment
• Never put a large down payment on a lease — if the car is totaled, that money is gone
• Money factor × 2400 = APR. If the dealer won't tell you the money factor, walk away
• Higher residual percentage = lower payments; this is set by the bank and isn't negotiable
• Compare the total lease cost (all payments + signing) to the depreciation you'd see if buying
• Gap insurance is usually included in leases — confirm this before buying separate coverage

Lease Inputs

A small change in money factor or negotiated price can materially change the monthly payment over a 36-month term.

Deal Comparison

Compare offers using the same MSRP, residual percentage, fees, and tax assumptions so the results stay comparable.

Return Risk

A large down payment rarely improves lease economics and can increase risk if the vehicle is totaled or stolen early in the term.

Frequently Asked Questions

• What is a money factor?

  The money factor is the lease equivalent of an interest rate, expressed as a tiny decimal (like 0.00150). Multiply by 2400 to get the approximate APR: 0.00150 × 2400 = 3.6%. Dealers sometimes quote it as 1.5 (multiplied by 1000). Always ask for the actual money factor — dealers aren't required to disclose it in many states.

• What is residual value?

  The predicted value of the car at lease end, expressed as a percentage of MSRP. A 50% residual on a $40,000 car means it's expected to be worth $20,000 after the lease. Higher residual = lower payment. Residuals are set by the bank, not the dealer, and aren't negotiable.

• Should I put money down on a lease?

  Generally NO. If the car is totaled or stolen, your insurance pays the bank — and your down payment is gone. Unlike a purchase, a lease down payment just pre-pays depreciation. Instead, negotiate a lower selling price to reduce the monthly payment without the risk.

• What happens if I exceed the mileage limit?

  You pay the excess mileage fee at lease return — typically $0.15-$0.30 per mile. Going 5,000 miles over at $0.25/mile = $1,250 penalty. If you expect higher mileage, negotiate a higher limit upfront (10,000 → 15,000 miles/year) — it's much cheaper than the penalty.

• Is leasing or buying cheaper?

  Leasing costs less per month but you never build equity. Over 10 years: leasing a new car every 3 years costs ~40-60% more than buying and keeping for 10 years. Leasing makes financial sense if you want a new car every 2-3 years anyway, need the tax deduction (business use), or want to minimize maintenance costs.

• Can I negotiate the cap cost?

  Absolutely. The negotiated price (capitalized cost) is the most important number in any lease. Negotiate it exactly like a purchase price — research invoice prices, get competing quotes, and aim for 4-8% below MSRP. Every $1,000 off the price saves roughly $28/month on a 36-month lease.