Car Loan Calculator
Calculate your car loan monthly payment, total cost, and what car you can afford on your budget. Includes sales tax, doc fees, trade-in, and full amortization schedule.
Car Loan Basics: How Financing Works
A car loan is a secured loan — the vehicle itself serves as collateral. If you stop paying, the lender repossesses the car. This lower lender risk makes auto loans more accessible and typically cheaper than unsecured personal loans. The key terms: principal (amount borrowed after down payment), APR (annual percentage rate — the interest rate), term (loan length in months), and monthly payment.
Most car loans use simple interest, calculated on the remaining balance each month. Early payments go mostly to interest; later payments go mostly to principal — this is amortization. For a $25,000 loan at 7% for 60 months, your first payment is roughly $321 interest + $174 principal. By month 60, it's $11 interest + $484 principal.
Where to get a car loan: Your existing bank or credit union (apply first — they often offer the best rates for existing members), online lenders (LightStream, AutoPay, myAutoLoan — compare rates quickly), or dealership financing (convenient but often higher rates due to dealer markup). Never skip the pre-approval step — it tells you exactly what you can afford before emotion takes over at the dealership.
Avoiding Common Car Financing Mistakes
Focusing only on the monthly payment. Dealers know that extending the term from 60 to 72 months reduces your monthly payment — but adds thousands in interest and extends the period you're underwater. Always compare total loan cost, not just monthly payment.
Rolling negative equity. Trading in a car you owe more on than it's worth while financing a new car adds that negative equity to your new loan. This is called "being upside down twice" and can put you $5,000–$15,000 underwater before you drive home.
Skipping the rate negotiation. Dealers typically mark up the financing rate by 1–2% as profit. If a bank offers you 5%, the dealer might quote 6.5% and keep the spread. Always negotiate the rate or use your own pre-approved financing.
Not including insurance in your budget. Insurance on a financed vehicle must be full coverage (comprehensive + collision), which costs significantly more than liability-only. Get insurance quotes before finalizing a purchase — some vehicles cost $200+/month to insure.
Frequently Asked Questions
Should I finance through a dealer or my own bank?
Get pre-approved at your bank or credit union before visiting any dealership. Credit unions almost always offer lower rates than dealers. With pre-approval in hand, you can still let the dealer try to beat it — sometimes manufacturers offer subsidized rates (0–2.9% APR) through dealer financing on new models. Compare total cost, not just rate: dealer financing might include extras rolled in. If you have no pre-approval, dealers have significant leverage to markup rates.
What happens if I miss a car payment?
Most lenders have a grace period of 10–15 days before charging a late fee ($25–50 typically). After 30 days, the missed payment is reported to credit bureaus, damaging your credit score. After 60–90 days, the lender may begin repossession proceedings. Repossession happens quickly with auto loans compared to mortgages — lenders can repo a car after as few as 2 missed payments in some states. If you're struggling, contact your lender immediately — most have hardship programs that defer payments or reduce rates temporarily.
Does refinancing my car loan make sense?
Refinancing makes sense if: your credit score has improved significantly since the original loan (potentially qualifying you for a lower rate); interest rates have dropped; or you originally financed through the dealer at a high rate. Savings can be substantial — refinancing a $20,000 loan from 9% to 5.5% saves roughly $1,700 over 48 months. Best time to refinance: within the first 2 years of the loan, before too much interest has already been paid. Most online refinancing can be completed in 1–2 days.
