Auto Loan Payoff Calculator
Estimate payoff time and interest for an existing auto loan, including optional monthly and one-time principal payments.
Enter your current auto loan details
Compare the current payment plan with optional monthly and one-time principal payments.
Enter 0 to compare without an added monthly amount.
Enter 0 if you only want to model an extra monthly payment.
Auto loan payoff estimate
Estimated adjusted payoff time
46 months
Available after page loads
Estimated adjusted interest
$3,409
Estimated time saved
14 months
Estimated interest saved
$1,235
At the adjusted payment, this estimate reaches payoff in 46 months with $3,409 in total interest. Compared with the current payment, that is 14 months sooner and $1,235 less interest.
| Plan | Monthly payment | Payoff | Interest |
|---|---|---|---|
| Current plan | $500.00 | Available after page loads60 months | $4,644 |
| Adjusted plan | $600.00 | Available after page loads46 months | $3,409 |
Monthly payoff preview
First 12 estimated payments and the final payment. Swipe the table sideways on a narrow screen.
| Month | Interest | Principal | Balance left |
|---|---|---|---|
| 1 | $140.00 | $460.00 | $23,540.00 |
| 2 | $137.32 | $462.68 | $23,077.32 |
| 3 | $134.62 | $465.38 | $22,611.93 |
| 4 | $131.90 | $468.10 | $22,143.84 |
| 5 | $129.17 | $470.83 | $21,673.01 |
| 6 | $126.43 | $473.57 | $21,199.44 |
| 7 | $123.66 | $476.34 | $20,723.10 |
| 8 | $120.88 | $479.12 | $20,243.98 |
| 9 | $118.09 | $481.91 | $19,762.07 |
| 10 | $115.28 | $484.72 | $19,277.35 |
| 11 | $112.45 | $487.55 | $18,789.80 |
| 12 | $109.61 | $490.39 | $18,299.41 |
| Final (46) | $2.37 | $407.11 | $0.00 |
Estimates assume a fixed rate, monthly interest, no fees or penalties, and immediate principal application of extra money. Check your loan terms or contact your lender before changing payments.
What this tool helps you do
What it does
Estimate payoff time and interest for an existing auto loan, including optional monthly and one-time principal payments.
Who it is for
People who want a quick planning estimate before making a money decision or comparing options.
Inputs it uses
Use the fields in the tool above, such as the amounts, dates, rates, state choices, or notes requested on this page.
How to read the result
Review the result with the assumptions, example, and limitations shown below before using it for planning.
Important limitation: Results are estimates for informational purposes only and are not financial advice. Actual lender calculations and payment processing may differ. Review your loan agreement or contact your lender before making decisions.
How the auto loan payoff estimate works
This calculator models an existing auto loan one month at a time. The current plan uses your remaining balance, annual interest rate, and current monthly payment. The adjusted plan subtracts a one-time payment made now and adds the optional extra amount to each later payment. Monthly interest is estimated as balance x annual rate / 12. The rest of each payment reduces principal.
The results compare estimated payoff time, payoff date, and total interest for both plans. The model assumes a fixed rate, no fees, and immediate principal application of extra money. Many auto loans use daily simple interest, so payment dates and lender posting rules can change the actual total. This is not a vehicle purchase calculator and does not use purchase price, sales tax, trade-in value, registration fees, or state-specific rules.
Worked example
Suppose an auto loan has $18,000 remaining at 7% with a $425 monthly payment. A borrower plans to pay $1,000 toward principal now and add $75 each month. The adjusted estimate starts with a $17,000 balance and a $500 monthly payment, then compares that schedule with the current $425 plan. Actual lender figures may differ.
Use the current balance, not the vehicle price
This page is for a loan that already exists. Start with the current principal balance shown in the lender portal or a recent statement. The amount originally financed no longer reflects payments already made. The vehicle's market value also is not the loan balance. A car can be worth more or less than the amount still owed.
Enter the payment applied to principal and interest. Optional products, late fees, or other charges may appear on a statement but are not part of this monthly model. If you are unsure which number to use, ask the lender for the current principal balance and regular contractual payment.
How to read the payoff comparison
The current plan is an estimate based on continuing the regular payment. The adjusted plan includes both extra-payment fields. Its payoff duration and interest appear in the summary cards, while the comparison table shows both plans together. Time saved and interest saved are differences between those two estimates.
Enter zero for either extra field if you do not plan to use it. With both extras at zero, the schedules should match. The compact payment table shows how the adjusted payment may be divided between interest and principal for the first 12 months and the final month.
Confirm principal-only payment handling
Extra money only produces the modeled effect when it reduces principal. Some lenders provide a principal-only option. Others may apply money to a future payment, hold a partial amount, or follow a different order required by the contract. Check the payment screen and verify the new principal balance after the transaction posts.
A one-time payment is assumed to happen now. If it happens later, more interest may accrue before principal falls. Rerun the calculator with the current balance near the actual payment date instead of relying on an older estimate.
Daily interest can change the result
Many auto lenders calculate interest each day based on the unpaid principal. A payment posted earlier or later can therefore change the interest portion. This calculator uses a monthly rate for a clear planning estimate and cannot reproduce every lender's calendar, posting cutoff, or rounding method.
The displayed payoff month is also approximate. For a final payment, request a payoff quote that includes a good-through date, per-day interest after that date, and accepted payment instructions. A normal statement balance may not be the exact payoff amount.
Review fees and your cash needs
Check the contract for prepayment penalties, minimum finance charges, and other fees. Also consider emergency savings and upcoming expenses. Cash sent to the lender may be difficult to recover, and borrowing again after an emergency can reduce the benefit of an early payoff plan.
Choose an extra monthly amount that fits after the required payment and normal expenses. Test several amounts to understand the range of possible outcomes. The estimate assumes the same extra amount every month, so skipped or changing payments will produce a different result.
Important limitations
The calculator does not include variable rates, refinancing, late payments, payment holidays, fees, or new borrowing. It does not estimate vehicle affordability or decide whether paying the loan is preferable to saving or investing. Use it as a planning comparison, then review the agreement or contact the lender before acting.
Frequently asked questions
What does an auto loan payoff calculator estimate?
It estimates remaining payoff time and interest from your current balance, rate, and payment. It can also compare optional monthly and one-time extra principal payments.
Should I enter the original vehicle price?
No. Enter the current principal balance from a recent statement. This tool evaluates an existing loan and does not calculate vehicle price, tax, trade-in value, or registration costs.
Does an extra auto loan payment reduce interest?
It may when the lender applies it to principal before later interest accrues. Payment timing, daily interest, fees, and lender processing can change the actual result.
Can an auto lender charge a prepayment penalty?
Loan terms vary. Review your agreement and ask the lender about prepayment charges, minimum finance charges, and principal-only payment instructions.
Is this an official auto loan payoff quote?
No. It is an informational estimate, not financial advice or a lender quote. Contact the lender for a payoff amount with a specific good-through date.
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Results are estimates for informational purposes only and are not financial advice. Actual lender calculations and payment processing may differ. Review your loan agreement or contact your lender before making decisions.