Car Loan Comparison Calculator
Compare two car loan offers side by side. See the monthly payment, total interest, total repayment cost, and which loan may cost less overall.
Loan A
Enter the details of your first loan offer.
Loan B
Enter the details of your second loan offer.
Enter both offers, then click Compare Car Loans to see your results.
How to Compare Car Loans
A lower monthly payment does not always mean a less expensive car loan. A longer repayment term can reduce the monthly payment while increasing the total interest paid over the life of the loan.
Compare the APR, repayment term, fees, monthly payment, and total cost before choosing between loan offers.
How to Use the Car Loan Comparison Calculator
Copy the amount financed, annual rate, term, and itemized fees from each written offer into Loan A and Loan B. For a fair comparison of lenders, use the same vehicle, negotiated price, down payment, and trade-in assumptions. If one offer finances add-ons or negative equity that the other does not, note that difference before deciding which rate is better.
Car Loan Comparison Calculator: Two-Offer Example
Compare $30,000 at 6.5% for 60 months against $30,000 at 7.5% for 72 months, with no fees. Loan A is approximately $586.98 per month with $5,219.07 in interest. Loan B is approximately $518.70 per month with $7,346.64 in interest. Loan B reduces the payment by about $68.28, but continues for another year and costs about $2,127.58 more in the calculator's unrounded comparison.
Totals and differences are calculated before display rounding, so subtracting two rounded figures may differ by a cent. The lower-cost label describes only the entered assumptions. It does not select a loan on your behalf or assess whether the higher installment fits your household budget.
Reading Car Loan Comparison Calculator Results
- Amount financed: the entered base borrowing plus fees selected for financing.
- Total interest: modeled interest over the full term with every scheduled payment made on time.
- Total cost: repayment plus applicable upfront loan fees in the model. Cash down payments and ownership costs outside the loan are separate.
- Term difference: the extra months one offer keeps you in debt. Compare this alongside the payment difference.
A Quote-Comparison Checklist
Ask for the out-the-door purchase price and a written financing disclosure. Check whether either quote includes a warranty, GAP product, or other optional item you did not intend to buy. Verify whether loan fees are already part of the stated balance before entering them again. Read restrictions, prepayment terms, and any balloon payment that this equal-payment model cannot represent.
Car Loan Comparison Calculator FAQs
Should I enter APR or interest rate?
The field is labeled APR, but the repayment model treats it as an annual interest rate divided into monthly periods. Use the contractual interest rate to reproduce payment calculations and compare the disclosed APR separately when it includes mandatory credit fees. Avoid double-counting those fees.
Can I compare loans with different down payments?
Yes, as borrowing scenarios, but the displayed loan totals do not include a separate down-payment input. Add each offer's cash paid upfront to its modeled cost before comparing the complete purchase outlay.
What if I plan to sell in three years?
The car loan comparison calculator compares full repayment terms, not a three-year ownership period. At the earlier sale date you still need to compare remaining balances, any payoff charges, and the vehicle's sale value. A full-term winner may not describe that shorter time horizon.
Sources: CFPB loan comparison guidance and cost disclosures. For an existing loan, use our refinance calculator. Results are estimates rather than lender quotes.
Separate Upfront Fees From Financed Fees
The car loan comparison calculator lets you choose whether fees are added to the balance. For a hypothetical $30,000 loan at 6.5% over 60 months, a $500 fee paid in cash leaves the loan payment near $586.98. Add the $500 cash fee to the approximately $35,219.07 of loan payments when comparing total borrowing-related outlay.
If the same $500 fee is financed instead, the opening balance becomes $30,500. The fee portion alone adds approximately $9.78 to each monthly payment and about $86.98 of interest over the term. The fee still costs $500, but financing it also creates an interest cost. These are simplified monthly-model estimates, not a lender disclosure.
Compare One Difference at a Time
Use the car loan comparison calculator first with the same balance and term on both sides to isolate a rate difference. Next enter the actual fees. Finally change the term if the written offers use different repayment periods. Recording each run makes it easier to identify why one offer becomes more expensive rather than attributing every difference to APR.
For a purchase comparison, keep a separate line for cash down, trade-in equity and any deposit already paid. The same deposit should be credited once. If one dealer offers a larger trade allowance but raises the replacement vehicle price, compare the complete transaction before treating the allowance as a saving.
Bring the calculation back to your monthly budget before choosing. The lower total-cost offer may require a payment you cannot sustain. Our 60 versus 72 month guide explains the trade-off between installments and time in debt.
