15 Yr Loan Calculator
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Reviewed by Calculator Editorial Team
Calculate your monthly loan payments for a 15-year term, including principal and interest. This calculator helps you understand how much you'll pay each month and the total interest over the life of the loan.
How to Use This Calculator
To calculate your 15-year loan payments:
- Enter the loan amount you're borrowing
- Enter the annual interest rate (APR)
- Select whether you want to calculate monthly payments or the total interest
- Click "Calculate" to see your results
The calculator will show you the monthly payment amount and the total interest paid over the 15-year term. You can also view a chart showing the amortization schedule.
Formula Used
Monthly Payment Formula
M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1 ]
Where:
- M = Monthly payment
- P = Principal loan amount
- i = Monthly interest rate (annual rate divided by 12)
- n = Number of payments (loan term in years × 12)
Important Notes
This calculator assumes fixed monthly payments and a fixed interest rate. It does not account for prepayment penalties or changes in interest rates over time.
Worked Example
Let's calculate a $200,000 loan at 4.5% annual interest for 15 years:
| Input | Value |
|---|---|
| Loan Amount | $200,000 |
| Annual Interest Rate | 4.5% |
| Loan Term | 15 years |
Using the formula:
Monthly payment = $200,000 [ (0.045/12)(1 + 0.045/12)^(15×12) ] / [ (1 + 0.045/12)^(15×12) - 1 ]
Calculating this gives a monthly payment of approximately $1,345.55 and total interest of $198,662.00 over the 15-year term.
Frequently Asked Questions
What is a 15-year loan?
A 15-year loan is a mortgage or loan with a repayment term of 15 years (180 months). It typically offers lower monthly payments compared to a 30-year loan but requires more frequent payments over a shorter period.
How does the interest rate affect my payments?
A higher interest rate will increase your monthly payments and the total amount of interest paid over the life of the loan. Conversely, a lower interest rate will result in lower monthly payments and less total interest paid.
Can I pay off my loan early?
Yes, you can pay off your loan early, but you should check if there are any prepayment penalties or fees associated with your specific loan agreement.