Auto Loan Calculator

Use the Auto Loan Calculator

Your results

Loan amount: $0.00
Monthly payment: $0.00
Total interest paid: $0.00
Total cost of loan: $0.00

How this calculator works

What it does: Estimate your financed vehicle amount, monthly auto loan payment, total interest, and total loan cost.
Inputs used: The estimate uses vehicle price, down payment, trade-in value, sales tax rate (%), loan term (years), and annual interest rate (%).
Calculation approach: The calculator applies the relationships defined for the auto loan calculator to those inputs and updates loan amount, monthly payment, total interest paid, and total cost of loan.
How to read the result: Treat the result as a scenario based on the values entered. Compare a few reasonable inputs and consider costs, taxes, timing, or risks that the calculator does not include.

How to Use This Calculator

Enter Vehicle price and Down payment using values that match the scenario you want to evaluate.
Enter Trade-in value and Sales tax rate (%) using values that match the scenario you want to evaluate.
Enter Loan term (years) and Annual interest rate (%) using values that match the scenario you want to evaluate.
Review the assumptions for the auto loan calculator, especially rates, time periods, and optional amounts.
Select Calculate to update the results, then adjust one input at a time to compare scenarios.

Understanding the Results

Loan amount: The target amount calculated from the spending, rate, or goal assumptions entered above.
Monthly payment: The estimated payment or withdrawal amount produced by the current balance, rate, and time assumptions.
Total interest paid: The estimated cost created by the entered rate over the selected period.
Total cost of loan: The combined amount estimated from the recurring values and time period in this scenario.

Common Mistakes

Entering an annual interest rate as a monthly rate, or leaving out fees and required payments.
Assuming the quoted monthly payment includes taxes, insurance, or other costs when it may cover principal and interest only.
Ignoring whether a payment is high enough to cover the interest added each month.
Comparing payments without also comparing payoff time and total cost.

Worked Example

Example inputs

Vehicle price: $35,000
Down payment: $5,000
Trade-in value: $3,000
Sales tax rate (%): 7%
Loan term (years): 5
Annual interest rate (%): 6.5%

Example results

Loan amount: $29,450.00
Monthly payment: $576.22
Total interest paid: $5,123.38
Total cost of loan: $34,573.38

For this illustrative scenario, the loan amount is $29,450.00. Changing any input can materially change the result, so use the example as a walkthrough rather than a guarantee.

Frequently asked questions

How is the auto loan amount calculated?

The calculator adds estimated sales tax to the vehicle price, then subtracts your down payment and trade-in value to estimate the amount financed.

How is the monthly auto payment calculated?

It uses the standard fixed-rate amortization formula based on the financed amount, monthly interest rate, and number of monthly payments.

Does a larger down payment reduce interest?

Yes. A larger down payment reduces the amount financed, which generally lowers both the monthly payment and total interest paid.

Does this include dealer fees and registration costs?

No. The estimate includes vehicle price and sales tax only. Dealer fees, registration, title costs, warranties, insurance, and other charges are excluded.

Should I choose a longer auto loan term?

A longer term can lower the monthly payment but usually increases total interest and the risk of owing more than the vehicle is worth.

What does the Auto Loan Calculator calculate?

Estimate your financed vehicle amount, monthly auto loan payment, total interest, and total loan cost. The result is based only on the inputs and assumptions shown on the page.

How should I interpret the loan amount from the Auto Loan Calculator?

Use it as an estimate for the scenario entered, not as a guarantee or personal recommendation. Test changes to vehicle price, down payment, and trade-in value to see which assumptions have the greatest effect.