Car Payment & Payoff Desk
See the whole cost
of your car deal.
Trace the price, trade-in debt, taxes and fees into a payment estimate. Compare a second quote, or explore extra payments on an existing loan.
USD only. An entered scenario, not a lender offer or affordability approval. Your vehicle and money entries stay in this tab; refresh clears them. Hosting can receive ordinary page requests.
Label the vehicle optional
No VIN, email or credit score needed. These labels help you identify your comparison and exports. We do not upload or sell these entries.
Enter the quote
Use the quoted annual interest rate. APR can include lender fees; this does not reconstruct APR. Zero amounts below are assumptions until checked against your quote.
Includes illustrative example inputs, not an actual listing or offer. Replace the figures with your quote, or clear to start empty.
Your quote worksheet
Start with the figures you have.
The calculation will show how the amount financed is built, how much is due upfront, and what extra payments change in this model.
CSV and print contain your entered details. Store them privately. Pinning lasts only until refresh.
Payment schedules
Pinned quote
This is the previous captured quote, not the current form. Change the inputs and calculate to compare.
Compare entered quotes
Compare price, principal, term and total interest together. A lower monthly payment alone is not a better deal.
Model an existing loan
For simple-interest loans only. Enter the principal balance and dates, not a past-due total including fees. A lender payoff quote can differ because of posting rules, accrued interest, fees and contract terms.
Illustrative example inputs. No lender or customer loan is represented.
Your dated scenario
Use the contract's actual terms.
The next-payment interval matters. We will show elapsed days and each interest charge, with and without the entered extra.
Illustrative daily simple interest · not a lender payoff quote
Payment schedules and calendar days
Understand the result
What this calculator includes
The amount financed starts with vehicle price, subtracts the rebate, cash down and trade-in value, then adds the balance still owed on the trade and any tax or fees you choose to finance. Paying tax or fees upfront changes cash due today and the principal. It does not make those costs disappear.
What is negative equity?
If the trade payoff is larger than the trade value, the difference is prior debt. This worksheet labels it separately so you can see it in the amount financed. For example, a $10,000 trade offer with a $14,000 payoff brings $4,000 of prior debt into the calculation. It is not extra value in the replacement car, and no future vehicle value is predicted.
Monthly estimate versus daily interest
The purchase mode estimates a regular monthly payment at the entered annual rate. The existing-loan mode uses actual elapsed calendar days and the day-count denominator you choose from the contract. Paying on a different day can change interest. Precomputed-interest loans, fees, extensions and special allocation rules need a different model. See CFPB's interest explanation and Chase's simple-interest example.
Do I enter interest rate or APR?
Use the contractual annual interest rate for payment math. APR can reflect additional credit fees; this calculator does not solve for APR or certify a disclosure. Compare the lender's amount financed, payments, finance charge and APR together. CFPB's comparison guidance explains those distinctions.
Which state's tax rules are used?
None are assumed. Enter tax from the quote, choose an explicitly described base, or enter a custom taxable amount. The rate, rebate treatment and taxable fees still need checking against your paperwork. The built-in price bases are before rebates and exclude fees.
Are vehicle details collected or sold?
Make, model and year are optional labels stored only in this tab. The calculator sends no vehicle or loan entries to a server, saves no analytics identifiers and sells no entries. Ordinary hosting requests still occur. Refresh clears inputs and pinned comparisons; download or print if you want a copy. No automated vehicle lookup or valuation is performed.
Read the worked guide: compare a complete car quote →
Planning a down payment? Sinking Funds tracks an entered savings target; it is a separate tool with localStorage and trial/license rules. No purchase or lender recommendation is made here.