Do you shop for a car by sticker price or by monthly payment? Dealers often steer buyers toward the payment, since a longer loan makes almost any car look affordable. Knowing both numbers keeps you in control at the finance desk.
This car loan calculator works in both directions. In payment mode, it turns a car price, down payment, rate, and term into a monthly payment. In affordability mode, it starts with your monthly budget and finds the highest car price you can finance. It is built for new and used car buyers, plus anyone refinancing an auto loan.
Table of Contents
- What the Auto Loan Calculator Includes
- How to Use Each Mode
- The Car Payment and Affordability Formulas
- Worked Example: Financing a $36,000 Car
- Worked Example: Turning a $550 Budget Into a Price
- Reading the Results and Schedule
- Choosing a Loan Term and Down Payment
- Limitations and Assumptions
- FAQs About the Car Loan Calculator
What the Auto Loan Calculator Includes
- Two tabs: Calculate EMI for the monthly payment, and Affordability for the maximum car price. EMI is the tool's name for the monthly payment.
- Linked down payment boxes: enter a percent or a dollar amount, and the other box fills in. If you then change the price, the box you typed in stays put.
- Term slider: pick 12 to 84 months in yearly steps, or type any month count.
- Four summary cards: Monthly Payment, Total Interest, Total Payment, and Payoff Date.
- Loan Breakdown and formula: the tool shows the formula filled in with your numbers.
- Yearly amortization schedule: principal, interest, total paid, and balance for each loan year.
- Utility buttons: Copy Summary, Export Schedule as a CSV file, Clear for results, and Reset for inputs.
Results update live as you type, so the Calculate button is optional.
How to Use Each Mode
In the Calculate EMI tab, follow these steps:
- Enter the full price in Car Price (On-Road) ($).
- Fill in Down Payment (%) or Down Payment ($). Include any trade-in value in the dollar box.
- Type the yearly rate in Interest Rate (% per year).
- Set Loan Tenure (Months) or drag the tenure slider.
In the Affordability tab, use these inputs instead:
- Enter your Monthly Payment Budget ($).
- Add the Interest Rate (% per year) and Tenure (Months).
- Enter your Available Down Payment ($), then read the Max Car Price.
The Car Payment and Affordability Formulas
Payment mode first finds the amount you borrow. Then it applies the standard fixed-rate payment formula.
Car Price-Down Payment=Loan Amount (P)→Monthly Payment
Payment = P × r × (1 + r)^n ÷ ((1 + r)^n - 1)
Affordability mode runs the same math in reverse. It finds the loan your budget can repay, then adds your cash.
Max Loan = Budget × ((1 + r)^n - 1) ÷ (r × (1 + r)^n)
- r is the monthly rate: the yearly rate divided by 12, then by 100.
- n is the term in months, rounded to a whole number.
- Max Car Price equals the max loan plus your available down payment.
At a 0% rate, the payment is simply the loan divided by the months.
Worked Example: Financing a $36,000 Car
Say the out-the-door price is $36,000. You put 20% down, which is $7,200. You finance $28,800 at 6.9% for 60 months, so r is 0.00575.
| Year | Principal Paid | Interest Paid | Balance |
|---|
| 1 | $4,996 | $1,831 | $23,804 |
| 2 | $5,352 | $1,475 | $18,453 |
| 3 | $5,733 | $1,094 | $12,720 |
| 4 | $6,141 | $686 | $6,579 |
| 5 | $6,579 | $248 | $0 |
The tool shows a $569 monthly payment, $5,335 in total interest, and a $34,135 total payment. Run in October 2026, the payoff date reads Oct 2031.
Worked Example: Turning a $550 Budget Into a Price
Now work backward. You can spend $550 a month, the rate is 7.5%, and the term is 60 months. You have $4,000 saved for the down payment.
The tool finds a Max Loan of $27,448 and a Max Car Price of $31,448. You would pay $33,000 over the loan, which includes $5,552 of interest. Stretching to 72 months raises the price to $35,810, but interest climbs to $7,790.
Reading the Results and Schedule
Monthly Payment is your fixed bill. In affordability mode, this card simply repeats your budget.
Total Interest is what the lender earns. Total Payment is the loan plus that interest, but not your down payment.
Payoff Date counts the term forward from today, not from a contract date. All dollar figures round to whole dollars. The schedule groups payments by loan year, so a 66-month loan ends with a six-month row.
The Loan Breakdown repeats the price, down payment, loan, and interest. Copy Summary puts the four card values on your clipboard. Export Schedule saves the yearly table as a CSV file in whole dollars.
Choosing a Loan Term and Down Payment
The term is the biggest lever on both payment and cost. This table keeps the $28,800 loan at 6.9%.
| Term | Monthly Payment | Total Interest |
|---|
| 48 months | $688 | $4,239 |
| 60 months | $569 | $5,335 |
| 72 months | $490 | $6,453 |
| 84 months | $433 | $7,594 |
Going from 48 to 84 months saves $255 a month but adds $3,355 in interest. Long loans also raise the risk of owing more than the car is worth. A car depreciation calculator shows how fast the value may fall.
A smaller down payment works the same way. Dropping from 20% to 10% down lifts the payment to $640 and interest to $6,002.
Build the on-road price before you start. Add state tax with our sales tax calculator, then add title, registration, and dealer fees. If a dealer quotes a low rate with high fees, check the true APR including loan fees. Not sure about owning at all? Try the lease versus buy comparison.
Limitations and Assumptions
- No separate tax, fee, or trade-in fields: fold them into the price or the down payment yourself.
- Fixed rate and monthly payments: extra payments, balloon loans, and variable rates are not modeled.
- Slider range: the tenure slider stops at 84 months. A longer typed term still counts, but the slider stays at its end.
- Affordability ignores taxes: the Max Car Price is your full on-road budget, so taxes and fees must fit inside it.
- Invalid entries: a blank price, a negative rate or down payment, or a zero term shows dashes. Results return once you fix it.
FAQs About the Car Loan Calculator
What Does EMI Mean on a Car Loan?
EMI stands for equated monthly installment. It is the same fixed monthly car payment that US lenders quote.
How Much Car Can I Afford on a $500 Monthly Payment?
It depends on rate and term. At 7.5% for 60 months with no money down, $500 covers a loan of about $24,953. Any down payment adds dollar for dollar to that price.
Should the Car Price Include Sales Tax?
Yes, if you plan to finance it. The tool labels the field as the on-road price, so include tax and fees you will borrow.
Is a 72-Month or 84-Month Car Loan a Good Idea?
It lowers the payment but costs more interest. In our example, 84 months costs $1,141 more interest than 72 months.
Does a 0% Dealer Offer Work in This Calculator?
Yes. Enter 0 as the rate. The payment becomes the loan divided by the months, and total interest shows $0.
How Can I Pay Off My Car Loan Faster?
Adding a little each month cuts interest. Our extra payment savings calculator estimates the savings. Find more tools in our finance and business calculators.
This calculator gives planning estimates only and is not financial advice. Reviewed for general accuracy by Prof. Dr. Khalil Mudassar, PhD.