Car Loan Calculator

Enter your details

Vehicle Price ($)

Down Payment ($)

Annual Interest Rate (%)

Loan Term 60 months

Tips

🚗Shorter loan terms have higher payments but cost significantly less in interest.
💡A 48-month loan vs. 72-month loan on $30,000 at 7% saves over $2,000 in interest.
📉Avoid loans longer than 60 months — you'll likely be 'underwater' (owe more than the car's worth) for years.

The true cost of financing a car — what the dealership does not tell you

Car dealerships are expert at making a loan feel affordable: 'It's only $450 a month!' But monthly payment is perhaps the worst way to evaluate a car purchase. A longer loan term reduces the monthly number while dramatically increasing total cost — and keeps you 'underwater' (owing more than the car is worth) for years. The car loan calculator shows you the full picture: monthly payment, total interest paid, and total cost of the vehicle including financing.

Consider a $35,000 car financed at 7%: a 60-month loan means $693/month and $6,600 in total interest. A 72-month loan drops the payment to $589 — $104 less per month — but adds $1,500 more in total interest and means you are still making car payments for 6 years on a depreciating asset. A 48-month loan increases monthly payments to $838 but costs only $2,200 less than the 72-month option in half the time.

How car loan interest works

Car loans use simple amortization — the same formula as mortgages. Your payment is fixed, but the split between interest and principal shifts each month. Early payments are mostly interest; later payments mostly principal. Unlike credit cards, car loan rates are fixed for the life of the loan.

Car loan interest rates depend primarily on your credit score and the loan term. In 2024, average new car loan rates range from 5–8% for buyers with excellent credit (above 720) to 12–20%+ for subprime borrowers. Used car loans typically carry rates 1–3 percentage points higher than new car loans. Credit unions often offer lower rates than dealership financing — always compare.

Example: The total cost of a $30,000 car at three different terms (7% APR)

36 months: $927/month, $3,356 total interest, $33,356 total. 60 months: $594/month, $5,640 total interest, $35,640 total. 84 months: $452/month, $7,968 total interest, $37,968 total. The 84-month loan costs $4,612 more than the 36-month loan and ties you to payments for 7 years.

Strategies to minimize the cost of your car loan

💵
Put more money down
A larger down payment reduces your loan size, your monthly payment, and your total interest. It also protects you against being underwater — owing more than the car is worth — if you need to sell or the car is totaled.
🔄
Shop your financing before the dealership
Get pre-approved by your bank or credit union before setting foot in a dealership. This gives you a rate to beat and removes the financing negotiation from the purchase negotiation. Dealers make significant profit on financing arrangements and will steer you toward their preferred lenders.
⏱️
Choose the shortest term you can afford
The monthly payment difference between 48 and 72 months feels significant in isolation but translates to thousands in interest saved. Ask yourself: can I afford the 48-month payment? If yes, take it. If not, 60 months. Avoid 72 and 84-month loans if at all possible.
📊
Buy used, not new
A new car loses 15–25% of its value in the first year and another 10–15% in years two and three. Buying a 2–3 year old certified pre-owned vehicle — after the steepest depreciation — often provides most of the reliability of new at 60–70% of the price.
🧮
Total cost, not monthly payment
Negotiate on the purchase price, not the monthly payment. Dealers can manipulate the monthly payment by extending the term. Agree on a price first, then arrange financing.

Frequently asked questions

Generally, a score above 720 qualifies for the best available rates. Scores between 660–720 get decent rates. Below 660, rates increase substantially. Below 600, you may face rates above 15%, which dramatically increases the true cost of any car purchase.

Sometimes 0% financing is the better deal — if you were going to finance anyway and your alternative rate is, say, 6%. But if the cash-back (dealer discount for paying cash or arranging your own financing) is $2,000–$3,000, the math may favor taking the rebate and financing at a low rate elsewhere. Calculate both options specifically with your loan amount and term.

GAP (Guaranteed Asset Protection) insurance covers the difference between what you owe on your car loan and the actual cash value of the car if it is totaled or stolen. Because cars depreciate quickly and loans amortize slowly, you can owe $20,000 on a car worth only $14,000 in year two. GAP insurance covers that $6,000 gap. It is worth considering if you put less than 20% down or took a 60+ month loan.

If you have the cash and your alternative use is a savings account earning below 4%, paying cash is reasonable. If your cash could be invested at 7%+ and the loan rate is 5% or below, keeping the loan and investing the cash may produce better financial outcomes. The psychological value of no car payment is also real and worth factoring in.

A commonly cited guideline is the 20/4/10 rule: put 20% down, finance for no more than 4 years, and keep total vehicle expenses (payment + insurance) below 10% of gross monthly income. On a $6,000/month income, total vehicle costs should be under $600/month. This guideline helps prevent car payments from dominating a budget.