Auto Loan Calculator
Monthly Payment
Enter your loan details above to estimate your monthly auto loan payment.
ESTIMATED MONTHLY PAYMENT
What Is an Auto Loan Calculator?
An auto loan calculator is an online tool that estimates how much you may pay each month when financing a new or used vehicle. It uses information such as the vehicle price, down payment, annual percentage rate (APR), and loan term to calculate an estimated monthly payment.
Our car loan calculator can also account for a trade in, an outstanding balance on your current vehicle, estimated sales tax, and additional fees. Including these costs provides a more useful estimate of the total amount you may need to finance.
For example, increasing your down payment or trade in value can reduce the amount financed, while a higher APR or shorter loan term can increase your monthly payment. A longer loan term may lower the monthly payment but can increase the total interest paid over the life of the loan.
Use this auto payment calculator to compare vehicle prices, APRs, down payments, and loan terms before discussing financing with a dealer, bank, or credit union.
Actual loan offers may differ based on your credit history, lender requirements, vehicle age, state taxes, dealer fees, and other financing conditions.
You can also explore our Financial Calculators for other loan, interest, tax, and everyday money calculations.
How the Auto Loan Calculator Works
The calculator first estimates the amount that needs to be financed.
Estimated Amount Financed
Amount Financed = Vehicle Price − Down Payment − Trade-In Value + Amount Owed on Trade + Applicable Sales Tax + Fees
For purchases outside the vehicle financing calculation, use our Sales Tax Calculator to estimate sales tax and the total purchase price.
The exact taxable amount can vary by state. Some states may provide a trade in tax credit, while others may calculate sales tax differently.
The calculator then applies a standard amortizing loan formula:
M = P × [r(1 + r)ⁿ] / [(1 + r)ⁿ − 1]
Where:
- M = Estimated monthly payment
- P = Amount financed
- r = Monthly interest rate
- n = Number of monthly payments
For example, a 6% annual interest rate is converted into a monthly rate before the payment is calculated.
To explore how compounding works for savings and investments rather than an amortizing auto loan, use our Compound Interest Calculator.
Worked Example
Suppose you purchase a vehicle for $28,000 with:
- Down payment: $5,000
- Trade in value: $0
- APR: 6.9%
- Loan term: 60 months
- Taxes and additional fees: excluded for this simplified example
The estimated amount financed would be:
$28,000 − $5,000 = $23,000
At a 6.9% APR over 60 months, the estimated monthly principal and interest payment would be approximately $454 per month.
Your actual payment may be higher if sales tax, registration costs, dealer fees, negative trade equity, or other financed charges are added.
Core Assumptions
- Uses a fixed APR for the selected loan term.
- Assumes equal monthly payments.
- Down payment reduces the estimated amount financed.
- Trade in value reduces the amount financed when applicable.
- Outstanding trade in debt can increase the amount financed.
- Sales tax and fees are included only when entered.
- The loan is assumed to follow a standard amortization schedule.
- No early payments or refinancing are assumed.
System Limitations
- Does not provide loan approval or financing offers.
- Actual APR depends on credit profile and lender terms.
- State and local sales tax rules vary across the U.S.
- Trade in tax treatment differs by state.
- Registration, title, documentation, and dealer fees may vary.
- Manufacturer incentives and rebates may not be included.
- Negative equity can affect the final financed amount.
- Results are estimates and should not be considered financial advice.
How to Use the Auto Loan Calculator
Using this car finance calculator is simple. Start by entering the vehicle purchase price. Next, add your expected down payment and the value of any vehicle you plan to trade in.
If you still owe money on the trade in vehicle, enter the remaining balance under Amount Owed on Trade. Add your estimated sales tax rate and any known dealer, title, registration, or other fees.
Then enter the expected interest rate or APR and choose your preferred loan term, such as 36, 48, 60, 72, or 84 months.
The monthly car payment calculator will estimate your payment based on the information entered. Try changing the APR, down payment, or loan term to compare financing options and understand how each factor may affect your monthly cost.
What Affects Your Monthly Car Payment?
Several factors can change the amount you pay each month on an auto loan.
Vehicle Price
A higher purchase price generally increases the amount you need to finance.
Down Payment
A larger down payment reduces the loan principal and can lower your monthly payment.
Interest Rate or APR
A higher APR increases borrowing costs and generally results in a higher payment.
Loan Term
A longer loan term typically lowers the monthly payment but may increase total interest paid.
If you are comparing monthly payments for home financing instead, use our Mortgage Calculator to estimate mortgage payments and long term borrowing costs.
Trade In Value
Trading in a vehicle can reduce the amount you need to finance.
Negative Equity
If you owe more on your current vehicle than it is worth, the unpaid balance may be added to the new loan.
Sales Tax and Fees
State taxes, registration fees, title fees, documentation charges, and dealer costs can increase the total financed amount.
Auto Loan Calculator With Trade In
An auto loan calculator with trade in can provide a more realistic financing estimate by considering both your current vehicle’s value and any remaining loan balance.
For example, if your trade in is worth $10,000 but you still owe $6,000, your positive equity is approximately $4,000 before taxes and other adjustments.
If the vehicle is worth $10,000 but you owe $13,000, you have approximately $3,000 in negative equity. If that amount is rolled into the new loan, it can increase both your financed balance and monthly payment.
Frequently Asked Questions About Auto Loan Calculators
An auto loan calculator estimates monthly payments using the amount financed, APR, and loan term. Down payment, trade-in value, taxes, and fees can also be included for a more complete estimate.
The monthly payment on a $30,000 car loan depends on the APR and loan term. A lower interest rate or longer term generally lowers the monthly payment, although longer terms may increase total interest costs.
Yes. You can enter an estimated sales tax rate. However, vehicle sales tax rules and trade-in tax credits vary by state and locality.
Generally, yes. A larger down payment reduces the amount financed, which typically lowers your monthly payment and total interest expense.
A trade-in can reduce the amount you need to finance. If you still owe money on the traded vehicle, the remaining loan balance must also be considered.
APR, or annual percentage rate, represents the annualized cost of borrowing. A higher APR generally leads to a higher monthly payment and greater interest costs over the loan term.
A 60-month loan usually has higher monthly payments but may result in less total interest. A 72 month loan can reduce the monthly payment but may increase the total amount of interest paid.
Yes. Enter the trade in value and the amount you still owe. If the outstanding balance exceeds the trade in value, the difference may increase the amount financed.
A car payment calculator provides an estimate based on the values entered. Actual payments may differ because of lender APR, taxes, dealer charges, registration fees, incentives, credit history, and other financing terms.
Yes. Using an auto loan calculator before visiting a dealer can help you compare vehicle prices, loan terms, APRs, trade-in scenarios, and down payments before discussing financing.
