15 Year Fixed Mortgage Payment Calculator
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Reviewed by Calculator Editorial Team
Use this calculator to determine your monthly mortgage payments for a 15-year fixed-rate loan. Enter your loan amount, interest rate, and down payment to see how these factors affect your monthly payments and total interest paid over the life of the loan.
How to Use This Calculator
To calculate your 15-year fixed mortgage payments:
- Enter the total loan amount you're requesting.
- Input your annual interest rate (APR).
- Specify your down payment amount if applicable.
- Click "Calculate" to see your monthly payment and other details.
The calculator will display your estimated monthly payment, total interest paid over the loan term, and a breakdown of how much principal and interest are paid each month.
Formula Used
The monthly mortgage payment is calculated using the standard mortgage payment formula:
Monthly Payment Formula
M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1 ]
Where:
- M = Monthly payment
- P = Principal loan amount (loan amount minus down payment)
- i = Monthly interest rate (annual rate divided by 12)
- n = Number of payments (loan term in years × 12)
For a 15-year fixed mortgage, n = 15 × 12 = 180 payments.
Worked Example
Let's calculate a 15-year fixed mortgage payment for a $200,000 loan with a 4.5% annual interest rate and $40,000 down payment.
Example Calculation
Principal (P) = $200,000 - $40,000 = $160,000
Annual interest rate = 4.5% = 0.045
Monthly interest rate (i) = 0.045 / 12 ≈ 0.00375
Number of payments (n) = 15 × 12 = 180
Monthly payment (M) = $160,000 [ 0.00375(1 + 0.00375)^180 ] / [ (1 + 0.00375)^180 - 1 ] ≈ $1,123.45
Total interest paid = (Monthly payment × 180) - Principal = ($1,123.45 × 180) - $160,000 ≈ $54,223
In this example, your monthly payment would be approximately $1,123.45, and you would pay about $54,223 in total interest over the 15-year term.
Comparison of Terms
Compare the differences between 15-year fixed mortgages and other common loan terms:
| Term | Monthly Payments | Total Interest Paid | Pros | Cons |
|---|---|---|---|---|
| 15-year fixed | Higher | Lower | Lower total interest, potential tax benefits | Higher monthly payments |
| 30-year fixed | Lower | Higher | Lower monthly payments | Higher total interest, less flexibility |
| Adjustable-rate (ARM) | Lower initial | Varies | Lower initial payments | Rate may increase, potential for higher payments later |
Frequently Asked Questions
- What is a 15-year fixed mortgage?
- A 15-year fixed mortgage is a home loan with a fixed interest rate for 15 years. This means your monthly payment and interest rate remain the same throughout the loan term.
- How do I qualify for a 15-year fixed mortgage?
- Qualification requirements typically include good credit history, stable income, and sufficient down payment. Lenders may have specific criteria based on your financial situation.
- Are 15-year mortgages better than 30-year ones?
- 15-year mortgages may be better if you plan to sell or refinance before the 15 years are up, as you'll pay less in total interest. However, they have higher monthly payments.
- What happens if interest rates rise after I get a 15-year fixed mortgage?
- Your interest rate remains fixed for 15 years, so rising market rates won't affect your payments. However, you may not be able to refinance for a lower rate if rates fall.
- Can I make extra payments on a 15-year fixed mortgage?
- Yes, you can make additional payments, which will reduce your principal balance and potentially shorten the loan term. Some lenders may offer prepayment penalties, so check your loan agreement.