Auto Loan Calculator 2026
Quickly estimate your monthly car payment, total loan cost, interest charges, payoff time, and potential interest savings with our Auto Loan Calculator.
Auto Loan Calculator 2026 — estimate monthly payments, interest, and total loan cost.
Calculate Your Auto Loan Payment
Enter your vehicle price, down payment, trade-in information, taxes, fees, APR, and loan term to estimate your car payment and total financing cost.
What Is an Auto Loan Calculator?
An Auto Loan Calculator helps estimate the monthly payment and overall cost of financing a new or used vehicle. By entering the vehicle price, down payment, trade-in information, estimated sales tax, fees, APR, and loan term, you can estimate how much you may need to borrow.
The calculator can also show estimated total interest, payoff time, and the potential interest savings from making an additional monthly payment. This can make it easier to compare different loan amounts and repayment terms.
Your actual lender payment can differ because lenders may use different rates, fees, taxes, loan terms, credit criteria, and payment schedules.
How Our Auto Loan Calculator Works
1. Enter the Vehicle Price
Start with the purchase price of the vehicle you are considering.
2. Add Your Down Payment
Enter the amount you plan to pay upfront. A larger down payment generally reduces the amount that needs to be financed.
3. Enter Trade-In Details
Add the estimated trade-in value and any remaining balance on your existing auto loan.
4. Add Taxes and Fees
Enter estimated sales tax and other fees that you expect to finance.
5. Enter APR and Loan Term
Enter the estimated annual rate and choose a repayment period such as 36, 48, 60, 72, or 84 months.
6. Review the Results
Review your estimated payment, loan amount, total interest, payoff time, and amortization schedule.
Auto Loan Payment Formula
For a fixed-rate installment loan, the regular monthly payment is generally calculated using the amount financed, monthly interest rate, and number of monthly payments.
In this formula, P represents the loan principal, r represents the monthly interest rate, and n represents the total number of monthly payments. When the interest rate is 0%, the calculator uses the loan amount divided by the number of months.
APR vs. Interest Rate
The interest rate represents the cost of borrowing the principal, while APR can include the interest rate plus certain additional loan fees. Because of this, APR can be useful when comparing financing offers.
The Consumer Financial Protection Bureau explains the difference between interest rate and APR .
How Down Payments and Trade-Ins Affect Your Auto Loan
A down payment reduces the amount you need to finance. A trade-in can also reduce the amount financed when the trade-in value is greater than the remaining balance on the old vehicle.
If you owe more on your current vehicle than its trade-in value, the difference is often called negative equity. If that amount is included in the new financing, it can increase the amount borrowed and the total cost of the new loan.
Because trade-in tax treatment and fees can vary by state and transaction, the sales-tax estimate in this calculator should be treated as an estimate.
How Loan Terms Affect Your Car Payment
A shorter loan term generally results in a higher monthly payment but fewer interest charges over the life of the loan. A longer term may reduce the monthly payment but can increase the total interest paid.
When comparing auto loans, look beyond the monthly payment. The APR, amount financed, loan term, and total cost can all affect the overall price of financing. :contentReference[oaicite:1]{index=1}
Extra Auto Loan Payments
Entering an extra monthly payment lets you estimate how paying more than the regular scheduled amount could affect your payoff period and interest cost.
This calculator assumes the extra amount is applied every month and that there is no prepayment penalty. Your actual loan agreement may have different rules, so check with your lender before making additional payments.
The CFPB recommends checking the terms of an auto loan for items such as prepayment penalties, fees, interest rate, and loan length. :contentReference[oaicite:2]{index=2}
Key Features of This Auto Loan Calculator
Monthly Car Payment
Estimate your regular monthly auto loan payment based on your financing inputs.
Total Interest
Estimate how much interest may be paid over the calculated repayment period.
Down Payment Analysis
See how your upfront payment affects the amount you need to finance.
Trade-In Calculation
Include your trade-in value and remaining trade-in loan balance.
Extra Payment Savings
Estimate potential interest savings when making additional monthly payments.
Amortization Schedule
View estimated principal, interest, payment, and remaining balance by month.
What Can You Calculate?
- Estimated monthly car payment
- Estimated amount financed
- Total estimated interest
- Total estimated loan cost
- Effect of a down payment
- Effect of a trade-in
- Impact of negative equity
- Estimated payoff period
- Potential interest savings from extra payments
- Monthly principal and interest breakdown
- Estimated auto loan amortization schedule
Tips for Comparing Auto Loans
Before accepting an auto loan, compare more than just the advertised monthly payment. Review the APR, interest rate, loan term, amount financed, fees, and total repayment cost.
The CFPB recommends comparing financing offers from different lenders, including banks and credit unions, and reviewing the terms before finalizing an auto loan. :contentReference[oaicite:3]{index=3}
You can also review the CFPB’s auto loan resources for additional information about financing and comparing loan terms.
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Frequently Asked Questions
A fixed-rate auto loan payment is generally based on the amount financed, interest rate, and loan term. This calculator also lets you account for estimated taxes, fees, down payments, and trade-in information.
Generally, yes. A larger down payment reduces the amount financed, which can lower the monthly payment and may reduce total interest.
A longer term can lower the required monthly payment, but it can also increase the total interest paid over the life of the loan.
The difference is generally negative equity. If the remaining balance is included in the new loan, it can increase the amount financed.
Yes. You can enter an estimated sales tax percentage. Actual tax treatment can vary by state and transaction, so the result should be treated as an estimate.
No. Car insurance, fuel, maintenance, repairs, and other ongoing vehicle ownership expenses are not included in the loan payment calculation.
Additional payments can reduce the outstanding principal faster and may reduce total interest, depending on the loan terms and how the lender applies extra payments.
The interest rate represents the borrowing cost applied to the principal, while APR can reflect the interest rate plus certain additional loan costs. Check your lender’s disclosures when comparing offers.
No. The results are estimates. Your actual lender payment, interest, taxes, fees, and approval terms may differ.