Use this free Auto Loan Calculator to estimate your monthly car loan payment, total interest, total loan payments, and estimated amount financed. Enter the vehicle price, down payment, trade-in value, sales tax, fees, APR, and loan term to get an estimate.
Compare different vehicle prices, down payments, interest rates, and repayment terms to understand how each factor can affect your auto financing costs.
Auto Loan Calculator
Estimated Monthly Payment
Enter your information and calculate.
Total Interest
Enter your information and calculate.
Total Loan Payments
Enter your information and calculate.
How to Use the Auto Loan Calculator
Enter your vehicle and financing information into the calculator, then click Calculate Auto Loan.
- Enter the vehicle purchase price.
- Enter your down payment.
- Enter your estimated trade-in value, if applicable.
- Enter the estimated sales tax rate.
- Enter additional vehicle-related fees.
- Enter the loan APR.
- Enter the loan term in months.
- Click Calculate Auto Loan.
What Does an Auto Loan Calculator Calculate?
An auto loan calculator estimates how much you may need to finance and how much that financing could cost over the selected repayment period.
This calculator estimates:
- Estimated sales tax
- Estimated amount financed
- Monthly loan payment
- Total loan payments
- Total interest
- Interest as a percentage of the amount financed
- Upfront down payment
- Trade-in value applied to the purchase
How Auto Loan Payments Are Calculated
A typical fixed-rate auto loan is an installment loan. You borrow an amount and repay it through scheduled payments over a specific number of months.
For a loan with a non-zero monthly interest rate, the standard payment calculation is:
Monthly Payment = P × r × (1 + r)n ÷ [(1 + r)n − 1]
P represents the amount financed, r represents the monthly interest rate, and n represents the total number of monthly payments.
When the APR is 0%, the estimated payment is simply the amount financed divided by the number of monthly payments.
How the Amount Financed Is Estimated
The calculator uses the vehicle price, estimated sales tax, additional fees, down payment, and trade-in value to estimate the amount that may need to be financed.
Estimated Sales Tax = Vehicle Price × Sales Tax Rate
Estimated Amount Financed = Vehicle Price + Estimated Tax + Fees − Down Payment − Trade-In Value
The calculator does not allow the estimated amount financed to fall below zero.
Important: Trade-In Tax Treatment Can Vary
The treatment of a trade-in for sales-tax purposes can vary depending on your location and the applicable tax rules. Some jurisdictions may allow a trade-in credit to reduce the taxable vehicle amount, while others may apply different rules.
For simplicity, this calculator applies the entered sales tax rate to the vehicle price before subtracting the trade-in value. Therefore, the tax estimate may differ from the amount shown on an actual dealer purchase agreement.
Tip: Check your local tax rules or your dealer's purchase documentation for the exact treatment of trade-in value.
What Is APR?
APR stands for Annual Percentage Rate. It is commonly used to express the yearly cost of borrowing and can incorporate certain costs associated with a loan.
This calculator uses the APR you enter as the annual rate for the payment calculation. Actual lender calculations can differ depending on how interest, fees, and other charges are applied.
When comparing auto loans, consider more than the monthly payment.
- APR
- Loan term
- Total interest
- Loan fees
- Total amount paid
- Amount financed
Auto Loan Calculator Example
Suppose you purchase a vehicle for 30,000, make a 5,000 down payment, have a 0 trade-in value, and estimate 6% sales tax with 1,000 in additional fees.
If the loan has a 7% APR and a 60-month repayment term, the calculator estimates the monthly payment, total interest, and total loan payments.
The example is only an illustration. Actual financing costs may differ because of lender terms, taxes, fees, credit profile, dealer charges, and other conditions.
Shorter vs. Longer Auto Loan Terms
The loan term can have a significant effect on both your monthly payment and total interest.
| Loan Term | Potential Effect |
|---|---|
| Shorter Term | Usually produces higher monthly payments but less total interest. |
| Longer Term | Usually produces lower monthly payments but potentially more total interest. |
| Higher APR | Generally increases the borrowing cost. |
| Larger Down Payment | Reduces the amount that needs to be financed. |
| Higher Trade-In Value | Can reduce the amount that needs to be financed. |
Why a Down Payment Matters
A down payment reduces the amount you need to borrow. A lower loan balance can reduce the monthly payment and the amount of interest charged over the repayment period.
However, using a very large down payment may reduce the cash available for other financial needs. Consider your overall budget before deciding how much to put toward the vehicle upfront.
How Interest Rate Affects an Auto Loan
The APR can have a substantial effect on the cost of financing. The impact can become larger as the loan amount or repayment period increases.
Compare total borrowing cost, not just monthly payment.
A loan with a lower monthly payment may still cost more overall if the repayment period is significantly longer.
How to Reduce Auto Financing Costs
- Compare financing offers from multiple lenders.
- Compare APRs rather than monthly payments alone.
- Consider a reasonable down payment.
- Choose a loan term that fits your budget without unnecessarily extending repayment.
- Review lender and dealer fees.
- Compare the total amount you will repay.
- Check the loan agreement for prepayment terms or penalties.
Monthly Payment vs. Total Loan Cost
A lower monthly payment can look attractive, but it does not automatically mean the loan is cheaper.
For example, extending a loan from 48 months to 72 months can reduce the required monthly payment while potentially increasing the total interest paid.
For this reason, compare both the monthly payment and the total loan cost before choosing a financing option.
Understanding the Calculator Results
| Result | What It Means |
|---|---|
| Estimated Monthly Payment | The estimated amount due each month for the financed balance. |
| Total Interest | The estimated interest paid over the full loan term. |
| Total Loan Payments | The sum of the estimated monthly payments over the loan term. |
| Estimated Amount Financed | The estimated balance financed after the down payment and trade-in are applied. |
| Interest as % of Amount Financed | The estimated total interest expressed as a percentage of the financed amount. |
What Is Not Included?
This calculator focuses on the estimated financing cost and does not represent the complete cost of vehicle ownership.
- Auto insurance
- Fuel or charging
- Maintenance
- Repairs
- Depreciation
- Parking
- Registration renewals
- Late-payment charges
- Optional protection products
- All lender-specific fees
Important Auto Loan Considerations
Important: This calculator provides an estimate based on the information entered. It is not a quote or offer from a lender.
Your actual payment and total financing cost may differ because of lender policies, credit history, final APR, taxes, fees, trade-in arrangements, and other loan conditions.
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Frequently Asked Questions
What is an auto loan calculator?
An auto loan calculator estimates the amount financed, monthly payment, total interest, and total loan payments based on the information entered.
How is an auto loan payment calculated?
For a standard fixed-rate installment loan, the payment is calculated using the amount financed, monthly interest rate, and number of monthly payments.
Does a down payment reduce the auto loan?
Generally, yes. A down payment reduces the amount that needs to be financed, which can reduce the monthly payment and total interest.
Does a trade-in reduce the loan amount?
A trade-in can reduce the amount you need to finance when its value is applied toward the vehicle purchase.
Does a trade-in reduce sales tax?
It depends on the applicable tax rules in your location. This calculator uses a simplified approach and does not reduce the taxable vehicle price by the trade-in amount.
Does a longer auto loan term lower the monthly payment?
Usually, yes. A longer repayment period can lower the required monthly payment but may increase the total interest paid.
Does this calculator include sales tax?
Yes. You can enter an estimated sales tax rate and the calculator includes the estimated tax in the amount financed.
Does this calculator include vehicle fees?
Yes. You can enter additional vehicle-related fees and the calculator includes them in the estimated amount financed.
What is APR?
APR stands for Annual Percentage Rate. It is commonly used to represent the yearly cost of borrowing. This calculator uses the entered APR as the annual rate for its payment estimate.
Does this calculator include insurance and fuel?
No. Insurance, fuel, charging, maintenance, repairs, depreciation, and other ownership expenses are not included.
Is the calculated payment guaranteed?
No. The result is an estimate. Actual payments can differ depending on the lender, final APR, taxes, fees, loan conditions, and other factors.
Should I choose the longest loan term for a lower payment?
Not necessarily. A longer term can lower the monthly payment but may increase total interest and extend the repayment period.
Auto Loan Calculator Final Thoughts
An auto loan should be evaluated using more than the monthly payment. The vehicle price, down payment, trade-in value, taxes, fees, APR, loan term, total interest, and total repayment amount all affect the cost of financing.
Use this calculator to compare different financing scenarios and see how changes in the loan amount, APR, down payment, or repayment period can affect your estimated costs.
Before accepting an auto loan, review the lender's actual offer and agreement, including the APR, fees, payment schedule, and total amount payable.
Revisiting Tools provides general informational and educational calculator tools. Results from this Auto Loan Calculator are estimates based on the information entered and should not be considered financial, lending, tax, or legal advice.
The calculator uses simplified assumptions. Actual auto loan payments and financing costs may differ because of lender terms, credit profile, taxes, fees, trade-in arrangements, APR calculations, and other conditions.
Trade-in and sales-tax treatment varies by location. Verify applicable taxes and charges with your lender, dealer, or relevant local authority.
Always review the actual loan offer and agreement before making a borrowing decision.