Car Loan Payment Calculator
This is the exact math a dealer's finance office is doing behind the scenes when they quote you a monthly payment — run it yourself first, so you know precisely what a given price, down payment, rate, and term actually produces before anyone quotes you a number.
Loan Details
A 20% down payment isn't just a rule of thumb — it's a real buffer against being "upside down," where you owe more on the loan than the car is worth, which happens fastest in the first year or two of ownership when depreciation is steepest.
Estimated Monthly Payment
Principal
$0
Total Interest
$0
Where the money goes
Frequently asked questions
How is my monthly payment actually calculated?
Your monthly payment is based on the loan principal (vehicle price minus down payment), the interest rate, and the loan term — standard amortization math, the same formula every lender uses. Stretching the term lowers the monthly number but increases the total interest you pay over the life of the loan, which is why a "good" monthly payment isn't the same thing as a good deal.
Should I choose a longer loan term to lower my payment?
Be cautious with terms beyond 60 months. A longer term does lower your monthly payment, but it also means paying significantly more in total interest and spending a longer period owing more than the car is worth as it depreciates. Most financial advisors recommend capping loan terms at 48 months (or even 36, under the stricter 20/3/8 rule) specifically to avoid this.
What interest rate should I expect?
Your actual rate depends heavily on your credit profile, the lender, and whether the vehicle is new or used (used-car loans often carry slightly higher rates). Getting pre-approved by your own bank or credit union before shopping is the best way to know your real rate in advance, rather than relying on whatever the dealership's finance office quotes you.
Why does the dealer finance office sometimes quote a different payment than I calculate?
This is worth watching closely — if a quoted payment is higher than what the math on your agreed price, rate, and term should produce, the gap may be "payment packing," where extra products like extended warranties are quietly added in. Always run the numbers yourself first and compare them to any number a finance office gives you.