Last updated:
How the Lease vs Buy Calculator Works
The lease vs buy calculator on this page computes the true net cost of each option over the same time horizon so you can make a data-driven decision rather than relying on monthly payment comparisons alone. For the lease scenario, the calculator sums your cap cost reduction (down payment), all monthly lease payments, and applicable taxes on those payments, then adds any higher insurance premiums associated with lease requirements. For the buy scenario, it sums your down payment, all loan payments over the comparison period, and the sales tax on the purchase price, then subtracts the expected resale value of the vehicle at the end of the comparison period. That resale credit is critical: it reflects the equity you retain when you own the car, an asset that has real value even after years of use.
The key insight the car lease vs buy calculator reveals is that monthly payment comparisons are misleading. A lease payment might be $150 lower per month than a loan payment on the same vehicle, but at the end of three years you hand the car back and own nothing. The buyer, by contrast, owns a vehicle worth 50 to 65% of the original purchase price, tens of thousands of dollars of equity. Our lease vs purchase calculator accounts for this equity difference so your comparison reflects total economic cost, not just cash outflow during the term.
For a breakdown of just the loan side, monthly payment, total interest, and amortization schedule, use our auto loan calculator. To compare borrowing costs across different lenders and loan types, our APR calculator converts any loan's interest rate and fees into a single comparable rate.
Understanding Lease Terms: Money Factor, Residual Value, and Cap Cost
To use the car lease calculator accurately, you need to understand three lease-specific terms. The capitalized cost (cap cost) is the negotiated price of the vehicle, equivalent to the purchase price in a loan. A cap cost reduction is any upfront payment, trade-in, or manufacturer incentive that lowers the cap cost before the lease is structured. The residual valueis the leasing company's predetermined estimate of the car's worth at the end of the lease, expressed as a percentage of MSRP. The higher the residual, the less depreciation you are financing, which lowers your monthly payment.
The money factor is the interest component of a lease, expressed as a small decimal. To convert it to an approximate APR, multiply by 2,400. A money factor of 0.00125 is roughly equivalent to a 3.0% APR. Unlike auto loan APRs, dealers are not legally required to disclose money factors, which is why many car shoppers unknowingly pay above-market lease financing rates. Before entering your numbers here, research current money factors for your target vehicle at Edmunds' car leasing guide, which publishes manufacturer-subsidized money factors and residuals monthly.
The monthly lease payment is calculated as: ((Cap Cost − Residual) ÷ Term) + ((Cap Cost + Residual) × Money Factor). The first term is the depreciation charge; the second is the finance charge. Because you are only financing depreciation rather than the full vehicle value, lease payments are typically 20 to 40% lower than loan payments on the same car. Which is the primary reason leasing is attractive. However, this lower payment comes at the cost of zero equity at lease end, which the comparison above makes financially explicit.
When Leasing Is Smarter Than Buying
The should I lease or buy a car question has a context-dependent answer. Leasing wins financially when manufacturer-subsidized residual values are inflated above market reality, a tactic automakers use to move metal during slow sales periods. When a manufacturer sets a 63% residual on a vehicle that will realistically retain only 55% of its value, you are financing less depreciation than actually occurs, effectively receiving a subsidy. During these promotional periods, the lease vs purchase calculator will often show leasing as the cheaper option, sometimes by thousands of dollars.
Leasing also makes sense for drivers who prioritize flexibility, always want the latest safety technology, or prefer predictable costs. Leased vehicles are almost always under warranty for the duration of the term, eliminating major repair surprises. For business owners and self-employed individuals, lease payments may be partially deductible as a business expense, adding a tax dimension not captured in this calculator. The Consumer Financial Protection Bureau's leasing guidance provides a useful checklist of financial and lifestyle factors to weigh beyond raw cost.
Conversely, leasing rarely makes sense for high-mileage drivers (above 15,000 miles per year), people who customize their vehicles, or buyers who plan to hold the car for more than five years. Overage fees of $0.15 to $0.30 per mile above the allowed annual limit can significantly inflate the true cost of a lease and should always be factored into any car lease calculator scenario if you expect to exceed the standard allowance.
When Buying Is the Better Financial Choice
Buying wins this comparison most decisively over long time horizons because equity accumulates while depreciation slows. A new car loses roughly 20 to 25% of its value in the first year, but depreciation decelerates sharply after that. A five-year-old vehicle might retain 40 to 50% of its original value and depreciate only 5 to 8% annually going forward. Once you pay off the loan, typically in 60 months, you drive the car payment-free while continuing to own an appreciating-relative-to-zero asset. A repeat lessee, by contrast, is perpetually making payments with no end date and no equity.
Buyers also have more flexibility in maintaining the vehicle, making modifications, and selling at any time. If your financial situation changes, you can sell an owned vehicle and capture whatever equity remains. Exiting a lease early is costly, early termination fees can equal several months of remaining payments. For buyers who need to understand how their auto loan fits into a broader debt repayment plan, our loan calculator can model any loan type alongside your auto financing.
According to Investopedia's analysis of lease vs buy economics, buyers who hold their vehicles for seven to ten years nearly always come out ahead compared to repeat lessees, often by $10,000 or more over a decade. The equity advantage compounds when buyers use the sale proceeds from their old car as a down payment on the next one, progressively reducing the loan principal and interest cost on each successive vehicle.
How to Use This Car Lease vs Buy Calculator Effectively
To get the most accurate comparison here, gather your lease quote sheet from the dealer before entering numbers. The quote should include the capitalized cost, money factor, residual value percentage, acquisition fee, and any manufacturer incentives. Enter the money factor exactly as quoted, even a small difference changes the monthly payment and total lease cost materially. For the buy scenario, use a pre-approval rate from your bank or credit union rather than the dealer's quoted rate to ensure you are comparing the best available financing on each side.
Set the "Years to Compare" field to match the lease term (typically 36 months / 3 years) so both scenarios are evaluated over the same time horizon. Use Kelley Blue Book or Edmunds to estimate the resale value of the vehicle you are considering after three years. This is the most important input for the buy scenario. The default 60% resale value is a reasonable assumption for a popular new vehicle in good condition but should be adjusted for your specific make and model.
A worked comparison makes the trade-off concrete. Take a $35,000 vehicle with a 60% residual after three years ($21,000) and a money factor of 0.00125 (about 3% APR). With a $2,000 cap cost reduction, the lease finances roughly $12,000 of depreciation plus finance charges, producing a monthly payment near $410. Buying the same car with a $2,000 down payment and a 6% APR loan over 60 months produces a monthly payment near $637, noticeably higher. Over 36 months the lessee pays out roughly $16,760 total and walks away with nothing, while the buyer pays roughly $22,930 over the same 36 months but still owns a car worth an estimated $19,000 to $20,000 at that point, and continues driving payment-free for another two years until the loan is paid off. Run side by side, the buyer's net cost over the full ownership period ends up meaningfully lower once the retained equity is credited back, even though the monthly payment looked worse the whole time.
The most common mistake buyers make when running this kind of comparison is fixating on the monthly payment gap and ignoring the equity side entirely, exactly the trap the worked example above is designed to expose. A second frequent error is plugging in an optimistic resale estimate pulled from a dealer trade-in quote rather than a private-party valuation from Kelley Blue Book or Edmunds, dealer trade-in offers typically run 10 to 15 percent below what the same vehicle would fetch in a private sale, which artificially narrows the buying advantage. A third mistake is comparing a 36-month lease against a 72-month loan; matching the comparison horizon to the lease term, then separately noting what happens after the loan is paid off, keeps the analysis honest.
For a complete picture of how your vehicle cost fits into your overall financial health, explore all the tools in our banking calculators hub, including the APR calculator to decode the true cost of any financing offer.