Auto Loan Calculator

Model common vehicle-financing inputs and inspect a payoff schedule while keeping jurisdiction-specific tax and dealer-fee assumptions explicit.

Vehicle price

Cash rebate

Down payment

Trade-in value

Sales tax (%)

Taxable price assumption

Fees financed

APR (%)

Term (months)

Extra monthly principal

—Required monthly payment

—Amount financed

—Interest with extra

—Payoff months

—Extra-payment comparison

Tax treatment of trade-ins and rebates varies by jurisdiction. Registration, dealer add-ons, lender fees, negative trade equity, and contract-specific charges can change the actual amount financed.

Independent formula & assumption audit

Recalculate the core payment or growth path with a separate browser-local formula layer. It reads the existing inputs, does not fetch live rates, and does not replace the primary calculator.

Set the finance assumptions above, then refresh this audit.

Formula audit ready. User-entered assumptions only.

Core borrowing, saving & investing workflows

Start with the broad calculator that matches the decision, then move to a specialist only when the loan structure, cash flow, tax treatment, debt strategy or savings goal genuinely changes.

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How to use this Auto Loan Calculator

Enter vehicle price, down payment, trade-in, estimated sales tax, fees, APR, term, and any extra monthly payment. Review payment and the amortization rows.