Estimated monthly payment: $377.42
Total paid over the loan: $22,645.20
Total interest: $2,645.20
Estimated with the standard fixed-rate amortization formula. An estimate for planning only. Not financial advice or an offer of credit.
About the loan and auto payment estimator
The loan and auto payment estimator turns a loan amount, an annual interest rate, and a term in months into an estimated monthly payment, the total you would pay over the life of the loan, and the total interest. Use it before you walk into a dealership or sit down with a lender, so you can see how a car loan, a personal loan, or a refinance might fit your monthly budget.
The math runs in your browser using the standard fixed-rate amortization formula, so nothing you type is uploaded or saved. This is a planning estimate, not financial advice or an offer of credit. Confirm any real figure with the lender before you commit.
How to use
- Enter the loan amount in the loan amount field (the example starts at 20,000 dollars).
- Type the annual interest rate as a percent in the annual interest rate field, using decimals like 5.49 if needed.
- Enter the term in months, for example 60 for a five-year loan or 72 for a six-year loan.
- Read the estimated monthly payment, total paid, and total interest that update below the inputs.
- Change the rate or the term to compare scenarios and see how the monthly payment moves.
Worked examples
20,000 dollars at 5% for 60 months is about 377 dollars per month
A typical new-car loan, with roughly 2,600 dollars of total interest over five years.
Stretching the same loan to 72 months drops the payment but raises total interest
A longer term lowers the monthly number while you pay more interest overall, which the totals make visible.
20,000 dollars at 0% for 24 months is about 833 dollars per month
With a promotional 0 percent rate the tool divides the principal evenly across the term and shows zero interest.
Frequently asked questions
- How is the monthly payment calculated?
- It uses the standard fixed-rate amortization formula, payment equals P times r divided by (1 minus (1 plus r) to the power of negative n), where P is the loan amount, r is the monthly rate (the annual rate divided by 12), and n is the number of months. When the rate is 0 percent the tool divides the principal evenly across the term instead.
- Is this an offer of credit or a guaranteed rate?
- No. The result is a planning estimate, not financial advice and not an offer of credit. Real rates, fees, and approval depend on the lender and your credit, so treat the number as a starting point and confirm the actual terms with the lender.
- Does the estimate include taxes, registration, or insurance?
- No. It estimates principal and interest only. Sales tax, registration, dealer add-ons, and insurance are not included, and each one will raise your real out-the-door cost, so budget for them separately.
- How does a longer term change the payment?
- A longer term spreads the principal over more months, so the monthly payment goes down. Because you are borrowing for longer, the total interest usually goes up. Comparing a 60-month and a 72-month term in the tool shows both effects side by side.
- Can I use it for a refinance or a personal loan?
- Yes. Any fixed-rate, fixed-term loan works the same way. Enter the balance you would refinance or borrow, the new rate, and the new term to compare the estimated payment against what you pay now.
- What rate should I enter if I do not have a quote yet?
- Enter a rate you have seen advertised for similar borrowers to get a rough idea, then update it once you have a real quote. The advertised rate and your offered rate can differ based on credit and the lender.
- Are the numbers I enter stored anywhere?
- No. Every figure is computed locally on your device the moment you enter it. Your loan amount, rate, and term stay in the page and are never transmitted or logged.
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