Car Loan Calculator – Estimate Monthly Payments & Total Cost
Monthly Payment
$0.00
Total Loan Amount
$0.00
Total Interest Paid
$0.00
Total Cost (Price + Tax + Interest)
$0.00
Loan Term Comparison
| Term | Monthly | Interest | Total |
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How to Calculate Car Loan Payments
This car loan calculator helps you estimate your monthly auto loan payment and total cost of financing a vehicle. The calculation starts with the vehicle price, subtracts your down payment and any trade-in value, then adds applicable sales tax to determine the financed amount. The standard amortization formula M = P × r(1+r)^n / ((1+r)^n − 1) is used, where P is the principal, r is the monthly interest rate, and n is the number of payments.
The loan term comparison table shows how different repayment periods affect your monthly payment and total interest cost. A shorter term means higher monthly payments but significantly less interest over the life of the loan. Choosing a 48-month term over a 72-month term might save thousands in interest. Financial advisors generally recommend keeping car loans to 60 months or less for new vehicles.
When budgeting for a car purchase, remember to account for insurance, fuel, maintenance, and registration costs beyond the loan payment. A common guideline is to keep total vehicle expenses under 15-20% of your monthly take-home pay. Your interest rate depends on your credit score, the lender, the loan term, and whether the car is new or used.
Frequently Asked Questions
How is a car loan monthly payment calculated?
A car loan monthly payment uses the amortization formula: M = P × r(1+r)^n / ((1+r)^n − 1), where P is the loan principal (vehicle price minus down payment and trade-in, plus tax), r is the monthly interest rate, and n is the total number of monthly payments.
What is a good interest rate for a car loan?
Good car loan rates range from 4-7% for new cars and 5-9% for used cars, depending on your credit score. Credit unions often offer lower rates.
Should I choose a longer or shorter car loan term?
Shorter terms (36-48 months) have higher monthly payments but much lower total interest. Longer terms (60-84 months) reduce monthly payments but increase total interest significantly.
Does trade-in value reduce sales tax?
In many US states, trade-in value reduces the taxable amount. For example, buying a $30,000 car with a $10,000 trade-in means you may only pay tax on $20,000.