Finance calculators

Auto Loan Payoff Calculator

Updated Jul 6, 2026 By Jehan Wadia
Rate Formulas

Loan Details

This is the current amount you still owe, not the original loan amount.
Found on your loan agreement or monthly statement.
Count the number of payments you have left.
Your regular scheduled payment, not including any extra you currently pay.
Even a small extra payment each month can significantly reduce your interest.
Enter any amount you plan to pay toward your loan right now.
Check your loan agreement — most modern auto loans have no prepayment penalty.
Bi-weekly = half the payment every two weeks (26 payments/year), which pays the loan off faster.

Payoff Summary

Original Loan

Total Interest Paid$0.00
Total Amount Paid$0.00
Payoff Date
Term Remaining

With Extra Payments

Total Interest Paid$0.00
Total Amount Paid$0.00
Payoff Date
Term Remaining
Interest Saved$0
Time Saved0 mo
New Payoff Date
Net Savings (after penalty)$0

Payment Increase Impact

Comparison of how different extra monthly payment amounts affect payoff date, months saved and interest.
Extra Monthly Payment New Payoff Date Months Saved Total Interest Paid Interest Saved

Remaining Balance Over Time

Remaining balance by year for original and accelerated payment schedules.
MonthOriginal BalanceAccelerated Balance

Full Amortization Schedule

Step-by-Step Solution


Introduction

This auto loan payoff calculator shows you how fast you can pay off your car loan and how much money you can save. Enter your current loan balance, interest rate, and remaining term. Then add an extra monthly payment, a one-time lump sum, or switch to bi-weekly payments to see the difference. The calculator compares your original loan schedule to your new plan side by side. You will see exactly how much interest you save, how many months you cut off your loan, and when your new payoff date will be.

It also builds a full amortization schedule so you can see where every dollar goes each month — how much pays down your balance and how much goes to interest. If your loan has a prepayment penalty, enter that too. The calculator will subtract it from your savings so you know if paying off your car loan early is truly worth it.

How to Use Our Auto Loan Payoff Calculator

Enter your current loan details below to see how extra payments can help you pay off your car loan faster and save money on interest. The calculator will show you a side-by-side comparison of your original loan schedule versus your new accelerated payoff plan.

Current Loan Balance: Type in the total amount you still owe on your auto loan today. This is not the price you paid for the car. You can find this number on your most recent loan statement.

Annual Interest Rate (APR): Enter the yearly interest rate on your loan. This is listed on your loan agreement or monthly statement. Type just the number — for example, type 6.5 for 6.5%.

Remaining Loan Term: Enter how many monthly payments you have left on your loan. For example, if you have 3 years left, type 36.

Current Monthly Payment: This is your regular scheduled payment. Check the "Auto-calculate" box to let the calculator figure it out for you based on your balance, rate, and term. Uncheck it if you want to type in your exact payment amount instead.

Extra Monthly Payment: Enter any additional amount you want to pay each month on top of your regular payment. Even a small extra amount like $50 or $100 can make a big difference over time.

One-Time Lump-Sum Payment: If you plan to make a large one-time payment right now, enter that amount here. Leave it at $0 if you do not plan to make one.

Prepayment Penalty: Some loans charge a fee if you pay them off early. Enter the penalty amount in dollars or as a percent of your balance. If your loan has no penalty, leave this at 0.

Payment Frequency: Choose "Monthly" if you make one payment per month. Choose "Bi-Weekly" to split your payment in half and pay every two weeks. Bi-weekly payments add up to one extra full payment per year, which helps you pay off the loan sooner.

Click Calculate to see your results. The calculator will show your total interest saved, how many months sooner you can be debt-free, a full amortization schedule, and a chart of your balance over time.

How Does an Auto Loan Payoff Calculator Work?

An auto loan payoff calculator shows you how fast you can pay off your car loan and how much money you can save. When you take out a car loan, you agree to pay back the amount you borrowed plus interest over a set number of months. Interest is the fee the lender charges you for borrowing the money. The longer you take to pay, the more interest you pay overall.

This calculator compares two plans side by side. The first plan is your current loan schedule with no changes. The second plan shows what happens when you pay extra each month, make a one-time lump sum payment, or switch to bi-weekly payments. Even a small extra payment — like $50 or $100 a month — can cut months or even years off your loan and save you hundreds or thousands of dollars in interest.

What Is a Bi-Weekly Payment?

A bi-weekly payment means you pay half your monthly amount every two weeks instead of one full payment each month. Since there are 52 weeks in a year, you end up making 26 half-payments, which equals 13 full payments instead of the usual 12. That one extra payment each year helps you pay down your loan faster without a big hit to your budget. This same strategy works for mortgages too — try our biweekly mortgage calculator if you want to apply the concept to your home loan.

What Is a Prepayment Penalty?

Some lenders charge a fee if you pay off your loan early. This is called a prepayment penalty. Most auto loans today do not have one, but you should check your loan agreement to be sure. If your lender does charge a penalty, this calculator subtracts it from your savings so you can see if paying early is still worth it. You might also consider refinancing your auto loan to a lower rate as an alternative way to reduce your total interest costs.

Why Pay Off Your Car Loan Early?

Paying off your auto loan ahead of schedule has clear benefits. You spend less money on interest, you own your car free and clear sooner, and you free up cash in your monthly budget. Use the calculator above to enter your current loan balance, interest rate, and remaining term. Then try different extra payment amounts to find a plan that works for you. If you have other debts you want to tackle alongside your car loan, a debt payoff calculator or a debt snowball calculator can help you build a strategy that covers all of them.


Formulas used

Monthly Interest Rate
r = \frac{\text{APR}}{12}
Scheduled Monthly Payment (Amortization)
M = P \cdot \frac{r(1+r)^{n}}{(1+r)^{n}-1}
Interest Charged per Period
I_{k} = B_{k-1} \times r
Principal Paid per Period
P_{k} = \text{Payment} - I_{k}
Bi-Weekly Payment Amount
\text{Payment}_{\text{bi-weekly}} = \frac{M + E}{2}
Interest Saved
\Delta I = I_{\text{orig}} - I_{\text{new}}
Net Savings after Prepayment Penalty
\text{Net Savings} = \Delta I - \text{Penalty}

Frequently asked questions

How much can I save by paying $100 extra per month on my car loan?

The exact savings depend on your loan balance, interest rate, and remaining term. Enter your loan details into the calculator and type $100 in the Extra Monthly Payment field. The Payoff Summary will show you the total interest saved and how many months sooner you will be debt-free. For example, on a $25,000 loan at 6.5% with 60 months left, paying $100 extra each month saves around $900 in interest and cuts about 11 months off the loan.

What does the auto-calculate checkbox do?

When the auto-calculate box is checked, the calculator figures out your monthly payment for you using your loan balance, interest rate, and remaining term. This uses the standard amortization formula. Uncheck it if your actual payment is different from the calculated amount and you want to type in your own number.

Should I make a lump sum payment or increase my monthly payment?

A lump sum payment lowers your balance right away, so you pay less interest from the start. Extra monthly payments spread the savings over time. If you have a large amount of cash available now, a lump sum usually saves more interest. Try both options in the calculator to compare the results side by side.

How do I find my current loan balance?

Check your most recent loan statement, log in to your lender's website, or call your lender and ask for your current payoff amount. Do not use the original loan amount — use the amount you still owe today.

Will bi-weekly payments really help me pay off my loan faster?

Yes. With bi-weekly payments you pay half your monthly amount every two weeks. Since there are 52 weeks in a year, you make 26 half-payments. That equals 13 full payments instead of 12. The extra payment each year goes straight to your principal, which reduces your total interest and shortens your loan.

What is the amortization schedule and how do I read it?

The amortization schedule is a table that shows every payment you will make until the loan is paid off. Each row lists the payment number, date, total payment amount, how much goes to principal, how much goes to interest, and your remaining balance. Early payments have more interest and less principal. As the balance drops, more of each payment goes to principal.

Does this calculator account for taxes or fees?

No. This calculator focuses on your loan principal and interest only. It does not include sales tax, registration fees, or insurance costs. It does include an optional prepayment penalty if your lender charges one.

How do I know if my loan has a prepayment penalty?

Read your original loan agreement or call your lender. The agreement will state whether a penalty applies and how it is calculated. Most auto loans issued today do not have a prepayment penalty, but it is important to check before you pay extra.

What if my payment is too low to cover the monthly interest?

The calculator will show an error message. If your payment does not cover the monthly interest, your balance grows instead of shrinking. This is called negative amortization. You need to increase your payment to at least cover the interest each month for the loan to be paid off.

Can I use this calculator for a new car loan I have not taken out yet?

Yes. Enter the loan amount you plan to borrow as the balance, the interest rate you were offered, and the loan term in months. The calculator will show you the payment schedule and let you see how extra payments would affect the total cost.

What does the Payment Increase Impact table show?

This table compares different extra monthly payment amounts — $0, $50, $100, $150, and $200. For each amount, it shows the new payoff date, months saved, total interest paid, and interest saved. It helps you quickly pick the extra payment level that fits your budget.

Is it better to pay off my car loan early or invest the extra money?

It depends on your interest rate and potential investment returns. If your car loan rate is higher than what you could earn by investing, paying off the loan early saves you more money. If your loan rate is very low, investing may give a better return. This calculator shows your guaranteed savings from early payoff so you can compare.

How accurate are the results?

The results are very accurate for standard fixed-rate auto loans. The calculator uses the same amortization formula lenders use. However, your actual payoff may differ slightly due to rounding, the exact date of payments, or any fees not included here. Contact your lender for an exact payoff quote.

Can I print or save my results?

Yes. Click the Print Schedule button to open a print-friendly version of your results and amortization tables. You can print it on paper or save it as a PDF using your browser's print dialog.

What happens if I enter 0 for the extra payment and lump sum?

The calculator will show your original loan schedule with no changes. The Original Loan and With Extra Payments columns will show the same numbers. This is useful if you just want to see your current amortization schedule and total interest cost.