Lease vs Buy (Car) Advanced Calculator

Lease payments can be lower because you are financing depreciation over a shorter period, not full vehicle ownership. But total cost may rise when you include due-at-signing cash, mileage overages, and repeated lease cycles. This calculator compares full horizon cash flow to avoid misleading payment-only decisions.

Set the horizon to how long you expect to keep transportation under the same plan, usually 36, 48, or 60 months. If you often replace cars quickly, a shorter horizon is realistic. If you keep vehicles longer, test a longer horizon to capture ownership benefits.

Yes. Residual or resale value can materially shift buy-versus-lease outcomes. Overestimating resale makes buying appear cheaper than it may be. Use conservative resale assumptions first, then run a second optimistic case to understand the range before deciding.

If your expected mileage exceeds lease allowances, include overage fees. Ignoring overage can make leasing look artificially cheap. A good practice is to run one case at expected mileage and another slightly higher to account for uncertainty in driving patterns.

No. Use it for pre-decision planning and negotiation prep. Final lease and finance contracts include detailed terms, taxes, and fees that vary by lender and state. Confirm all numbers against official documents before signing.

Build a baseline scenario from your realistic budget, then test two alternatives: a cheaper vehicle and a longer ownership horizon. This reveals whether payment pressure or depreciation assumptions drive the result. Use those insights when negotiating price, down payment, and lease structure.