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Compare auto-loan offers beyond the monthly payment

Put two written US purchase-loan offers side by side. Keep the cash you pay separately, the repayment term and a large final payment in view.

by · Published · 8 min read

A smaller monthly payment can come with a longer commitment and a larger total. The CFPB recommends comparing the amount financed, APR and term as well as the payment[1]. This worksheet uses the figures on your written offers. It does not predict an approval or reverse-engineer a payment from APR.

Get the same purchase into both offers

Ask for a written out-the-door price, identify optional products and separate the trade-in from financing[4]. Different rebates, down payments or known add-ons can change the amount financed. Record those differences before comparing; two offers for the same car are not necessarily the same purchase deal.

Keep your own money separate from a dealer discount, manufacturer rebate or trade-in allowance. Those credits are not cash you pay out of pocket. If a fee is withheld from the loan payout and you must make up the missing money to the dealer, include that actual additional cash. Do not add the withheld fee once more as though you paid it to the lender.

Find the disclosure figures

APR describes the credit cost as a rate and can include mandatory fees. Finance Charge is the disclosed dollar charge; Amount Financed is not necessarily the face amount of the loan. Total of Payments describes the scheduled payments[2]. Copy each labeled value rather than reconstructing one from another.

For equal monthly installments, enter the same amount for the regular and final payment. If the last payment is larger, enter its full amount, not just the increase. A schedule with several payment levels, biweekly installments or a variable rate is outside this tool.

Compare two disclosed auto-loan offers

US purchase loans only. Use written offers for the same vehicle. Plain USD amounts, no commas. Leave unknown values blank; they create a question, not a zero.

Offer ACopy Amount Financed from the disclosure, not the vehicle price or the face amount of the note.Copy Finance Charge, including charges identified there. Enter 0 only when explicitly zero.Copy Total of Payments, the disclosed sum of scheduled payments.Copy the disclosed APR percentage. It is not used as a nominal interest rate or recalculated here.2 to 120 monthly payments, including the final payment. Deferred first payment timing is not evaluated.The amount of each payment before the final one.Enter the regular amount again if the last payment is the same. Include any balloon amount.Actual separate cash, such as a down payment or a separately paid finance fee. Include cash you must add to the dealer after a fee is withheld from the loan payout. Exclude a first installment already in the schedule, financed fees, trade-in credit, manufacturer rebates and dealer discounts. Enter 0 only when none.
Offer BCopy Amount Financed from the disclosure, not the vehicle price or the face amount of the note.Copy Finance Charge, including charges identified there. Enter 0 only when explicitly zero.Copy Total of Payments, the disclosed sum of scheduled payments.Copy the disclosed APR percentage. It is not used as a nominal interest rate or recalculated here.2 to 120 monthly payments, including the final payment. Deferred first payment timing is not evaluated.The amount of each payment before the final one.Enter the regular amount again if the last payment is the same. Include any balloon amount.Actual separate cash, such as a down payment or a separately paid finance fee. Include cash you must add to the dealer after a fee is withheld from the loan payout. Exclude a first installment already in the schedule, financed fees, trade-in credit, manufacturer rebates and dealer discounts. Enter 0 only when none.
What is known about both offers

No account or saved application. These figures are sent to this site for the calculation, excluded from page analytics and not stored in a financial record. Reloading the clean page starts over; keep the CSV or print before leaving.

Start a blank comparison

After editing, submit again or download again: both actions recalculate the current entries. An earlier result above still describes the previous submission.

Why a separately paid fee still belongs in cash

Regulation Z explains how a prepaid charge can reduce Amount Financed even when it is paid separately at closing. Total of Payments comes from the payment schedule[3]. A charge appearing in Finance Charge does not, by itself, tell you whether it was paid separately or financed.

Our cash comparison adds only Total of Payments + your cash outside that schedule. It never adds Finance Charge on top. A separate cash fee belongs in the second term. A financed fee, an installment already counted in the schedule, or a rebate does not. Ask the lender to identify the treatment if the paperwork is unclear.

Use the result to ask better questions

Compare purchase scope and all-in cash before preferring a lower APR or smaller Finance Charge. A lost rebate or a different add-on can outweigh a lower credit charge. The three steps below turn a numerical difference into a concrete question for the lender.

Keep financing separate from owning the car

This worksheet does not include insurance, fuel, maintenance, depreciation or the value of a vehicle you trade in. Use the car cost calculator for running costs, and the budget calculator to examine your monthly room. Neither this comparison nor those estimates establish affordability or a right to credit.

For a monthly interest illustration and the limits of extra-payment calculations, read what auto-loan interest does to the total.

What you can do about it

  1. Request figures that reconcile

    Ask for the exact final installment and itemization when the two totals disagree. Keep the mismatch as an open question instead of changing a value to make it fit.

  2. Plan separately for the final payment

    A larger final installment needs its own funding decision. A future refinance is not guaranteed; compare the complete schedule before accepting the lower regular payment.

  3. Keep and recheck the submitted comparison

    Save the CSV or print with the sources and confirmed scope. Compare it with the final contract; any changed quote calls for a fresh submission.

This article is not investment advice. We describe how things work and what they cost. What fits your situation is yours to judge – if in doubt, with someone who knows it.

Sources

  1. Comparing auto loan offers beyond the monthly payment, Consumer Financial Protection Bureau, retrieved October 17, 2026.
  2. Understanding an auto-loan Truth-in-Lending disclosure, Consumer Financial Protection Bureau, retrieved October 17, 2026.
  3. Regulation Z, section 1026.18(b), (g), (h) and official interpretations: amount financed, prepaid charges and payment schedule, Consumer Financial Protection Bureau, retrieved October 17, 2026.
  4. Financing or leasing a car: written price, add-ons and trade-in debt, Federal Trade Commission, retrieved October 17, 2026.

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