Car Lease vs Buy Calculator

How to use this tool

Enter purchase price, loan terms (down payment as $ or %), lease payment/term/due at signing ($ or %), and expected vehicle value at lease end. Optionally add residual as $ or % of price, sales tax %, monthly insurance differential (buy vs lease), opportunity-cost return on the buy down payment, and mileage allowance vs expected miles with overage ¢/mile.

Worked example

A $35,000 car financed at 6% with 8% sales tax versus a $399/month 36-month lease — adding opportunity cost and mileage overage often shifts the break-even when you drive more than the lease allowance.

How it works

Compares net cost of buying versus leasing over the lease term. Buy side includes loan payments (with optional sales tax rolled into the financed amount), insurance differential, and opportunity cost of the down payment invested at your expected return, minus equity at the end. Lease side includes payments, drive-off, and estimated mileage overage above the allowance.

Limitations

Estimates only for educational purposes. Not financial, tax, or legal advice. Verify figures with your lender, advisor, or official IRS/SSA sources before making decisions.

Privacy and file handling

Your data stays on your device and is not uploaded.

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