Auto loan, lease vs buy and refinance tools

Estimate a car payment, compare leasing with buying over your keep horizon, and see whether refinancing saves enough to clear fees. Free, private, no sign-up.

Auto loan calculator Lease vs buy

Why this matters in late 2026. Third-party keyword listings (kwrds.ai) show elevated interest in refinance and payment calculators — for example “refinance auto loan calculator” listed at about +49% trend with CPC near $3 and a volume bucket around 33,100, and “auto financing payment calculator” around +23%. Separate serpanalytics-style listings put “auto lease calculator” near 3.6–4.4k searches/month at roughly $2.91 CPC. Exact “lease vs buy” volumes are unverified here. Evergreen demand plus Q4 dealer incentive season make transparent math useful. Figures are third-party estimates, not our measurements.

Tools

• Auto loan calculator

  Estimate your car loan monthly payment, total interest and amortization from price, down payment, trade-in, tax, APR and term.

• Lease vs buy calculator

  Compare the estimated net cost of buying versus leasing a car over your keep horizon, including money factor, residual and mileage.

• Auto refinance calculator

  Estimate monthly savings, interest change and break-even months when refinancing a car loan to a new APR and term.

• Affordability calculator

  Sketch a maximum car payment and purchase price from monthly income, existing debts, target DTI and a share of income for the car.

Popular guides

• How Auto Loan APR Works

  What auto loan APR means, how amortization uses it, and how to compare dealer and bank offers using amount financed and term.

• Lease vs Buy: A Practical Decision Framework

  Choose between leasing and buying using horizon, miles, equity, money factor and residual — not monthly payment alone.

• When Auto Loan Refinance Pays

  How to judge an auto refinance using monthly savings, total interest, fees and break-even months — and when a longer term backfires.

• Money Factor Explained

  What a lease money factor is, how to convert it to an APR-equivalent, and how rent charges fit beside depreciation in a lease payment.

• Dealer Financing vs Bank or Credit Union

  How dealer-arranged auto financing compares with bank and credit-union loans, including markups, captives and how to shop both.

• Reading an Auto Loan Offer & Cooling-Off Myths

  How to read amount financed, APR and add-ons on an auto loan offer, and why the FTC cooling-off rule usually does not cancel car deals.

All guides →

How we work

We do not invent APRs or dealer incentives. Every calculator uses only the numbers you type. Guides cite CFPB, FTC and NHTSA where relevant. We are not a lender or dealer. Read more about AutoLane.