Calculate your monthly lease payment, total lease cost, and effective interest rate. Compare lease deals with real math.
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A buyer in San Antonio is financing a 2022 Ford F-150 at $42,000 with $5,000 down. Dealer is offering 6.9% for 60 months; credit union pre-approval is 5.4% for 60 months.
Takeaway: Always get outside financing before visiting a dealer. In Texas, sales tax (6.25%) adds $2,625 on a $42,000 purchase — factor that into total financed amount. GAP insurance is worth it on used vehicles with less than 20% down.
Dealers mark up loan rates from lender buy rates as additional profit — often 1-3% above what the bank would directly offer you. Get a pre-approval from your bank or credit union before entering the dealership. You can still accept dealer financing if it's better, but you have a benchmark.
State sales tax on vehicles ranges from 0% (Montana, Oregon, New Hampshire) to 9%+ (Louisiana, Tennessee combined). On a $40,000 vehicle, that's $0-$3,600. Registration fees, title transfers, and dealer documentation fees add $200-$1,000 depending on state.
A new vehicle loses 15-25% of its value in the first year and 50-60% in the first five years. Calculators showing monthly payment understate true cost of ownership. Total cost of ownership (TCO) — including depreciation, insurance, fuel, and maintenance — is typically 1.5-2× the loan payment alone.
If you total a vehicle worth $28,000 and owe $33,000 on the loan, your standard auto insurance pays $28,000 — leaving you owing $5,000 with no car. GAP coverage bridges this difference. It is especially important when down payment is under 20% on a new vehicle.
Based on your inputs
Effective APR: 3.0%
| Monthly Payment | $487.61 |
|---|---|
| Depreciation/mo | $411.11 |
| Finance Charge/mo | $76.50 |
| Capitalized Cost | $38,000.00 |
| Residual Value | $23,200.00 |
| Total Lease Cost | $19,554.00 |
| Effective APR | 3.00% |
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A car lease is essentially a long-term rental with a purchase option. You pay for the vehicle's depreciation during your lease term, plus a financing charge, rather than the full purchase price. At lease end, you return the car (or buy it at the predetermined residual value). Leasing accounts for roughly 30% of all new vehicle transactions in the US, and that share rises above 50% for luxury brands like BMW, Mercedes, and Lexus.
Every lease payment consists of two parts. The depreciation component is the largest: it equals the capitalized cost (negotiated price minus down payment) minus the residual value, divided by the number of months. If you negotiate a $38,000 cap cost on a car with $23,200 residual over 36 months, depreciation is ($38,000 - $23,200) / 36 = $411.11 per month. The finance charge equals (cap cost + residual) × money factor: ($38,000 + $23,200) × 0.00125 = $76.50. Total: $487.61 per month. This is why residual value matters so much — it directly reduces your largest payment component.
The money factor is a lease-specific way of expressing the financing cost. It looks like a tiny decimal (0.00100 to 0.00250 typically). Multiply by 2,400 to get the approximate APR equivalent. A money factor of 0.00125 equals about 3.0% APR — quite favorable. Factors above 0.00200 (4.8% APR) are considered expensive. Money factors are set by the leasing company (usually the manufacturer's captive finance arm) and vary by credit tier, vehicle model, and current incentive programs. Tier 1 credit (720+) gets the best factors.
Residual values are set by the leasing company based on projected depreciation. They are not negotiable. However, you can choose vehicles with higher residuals. Trucks and SUVs typically hold value better than sedans. Toyota, Lexus, and Porsche consistently have the highest residual values. A car with 62% residual vs 50% residual on a $40,000 MSRP means $4,800 less in depreciation over the lease — roughly $133 less per month. This is why some $50,000 vehicles lease for less than $30,000 vehicles with poor residuals.
Most consumers make the mistake of negotiating the monthly payment. Instead, negotiate these four numbers independently: (1) Selling price / cap cost — negotiate this down just like a purchase. (2) Money factor — ask for the"base money factor" or"buy rate" before markups. (3) Down payment / cap cost reduction — affects monthly payment but not total cost. (4) Mileage allowance — standard is 10,000-12,000/year; negotiate 15,000 upfront rather than paying overage later. Get each number in writing before discussing monthly payments.
Leasing is optimal when: you drive less than 12,000 miles per year, you want a new car every 2–3 years, the vehicle has strong residual values, manufacturer incentives (subvented money factors) reduce financing costs below market rates, or you may want to maximize cash flow and prefer lower monthly payments. Leasing is suboptimal when: you drive heavily, you keep cars for 5+ years, you modify vehicles, or you want to build ownership equity. For a pure financial comparison, use our Lease vs Buy Calculator to see the 5-year total cost difference.
A money factor is the lease equivalent of an interest rate, expressed as a small decimal like 0.00125. To convert to an approximate APR, multiply by 2,400. So a money factor of 0.00125 equals roughly 3% APR.
Residual value is the estimated worth of the vehicle at the end of the lease, expressed as a percentage of MSRP. A 60% residual on a $40,000 car means it is projected to be worth $24,000 after the lease.
Leasing offers lower monthly payments and a new car every 2–3 years, but you build no equity. Buying costs more monthly but you own the car. Leasing is better if you drive under 12K miles/year and want a new car regularly.
Depreciation = (cap cost – residual) / term. Finance charge = (cap cost + residual) × money factor. Monthly payment = depreciation + finance charge.
Acquisition fee ($595–$1,295), disposition fee ($300–$500), documentation fee ($100–$500), and excess mileage charges of $0.15–$0.30 per mile over allowance.
A money factor below 0.001 is considered good, equivalent to roughly 2.4 percent APR. Excellent credit scores above 720 typically qualify for the lowest money factors offered by manufacturers.
Yes. The capitalized cost is the negotiated vehicle price and is fully negotiable just like a purchase price. Lowering the cap cost directly reduces your monthly lease payment by decreasing the depreciation portion.
You pay an excess mileage fee for every mile over the allowance, typically 15 to 30 cents per mile. Going 5,000 miles over at 25 cents per mile costs $1,250 at lease end. Consider purchasing additional miles upfront at a lower rate.
Yes. Most leases include a purchase option at the predetermined residual value. If the car is worth more than the residual on the open market, buying it out can be a good deal compared to returning it.
A disposition fee of $300 to $500 is charged when you return the vehicle at lease end. You can avoid it by purchasing the vehicle or leasing another car from the same manufacturer, as many brands waive the fee for loyal customers.
Monthly Payment = Depreciation + Finance Charge
Depreciation = (Cap Cost − Residual Value) / Term
Finance Charge = (Cap Cost + Residual Value) × Money Factor
Effective APR ≈ Money Factor × 2,400
Every formula on this page traces to a federal agency, central bank, or peer-reviewed institution. We cite the rule-makers, not secondhand blogs.
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Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.