15 Yr Mortgage Payment Calculator

This 15-year mortgage payment calculator helps you determine your monthly payments for a 15-year home loan. By comparing different loan amounts, interest rates, and down payments, you can make informed decisions about your mortgage options.

How to Use This Calculator

Using our 15-year mortgage payment calculator is simple:

Enter the loan amount you're considering (e.g., $200,000)
Input your desired down payment percentage (e.g., 20%)
Enter the current interest rate (e.g., 3.5%)
Click "Calculate" to see your monthly payment

The calculator will show you your estimated monthly payment, total interest paid over the loan term, and a breakdown of your payments over time.

How 15-Year Mortgage Payments Work

A 15-year mortgage is a home loan that's repaid over 15 years instead of the more common 30-year term. This shorter repayment period typically results in lower monthly payments but higher total interest costs compared to a 30-year mortgage.

The key factors that determine your monthly payment are:

Loan amount (principal)
Interest rate
Loan term (15 years)

Your monthly payment is calculated using the amortization formula, which accounts for both the principal and interest portions of your payment.

The Formula

The formula for calculating monthly mortgage payments is:

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)

This formula uses the concept of amortization, where each payment covers both the interest for that period and a portion of the principal.

Worked Example

Let's calculate a 15-year mortgage payment for a $200,000 loan with a 3.5% interest rate and 20% down payment.

Down payment: $200,000 × 20% = $40,000
Loan amount: $200,000 - $40,000 = $160,000
Monthly interest rate: 3.5% ÷ 12 = 0.0029167 (0.29167%)
Number of payments: 15 × 12 = 180
Using the formula: M = $160,000 [ 0.0029167(1 + 0.0029167)^180 ] / [ (1 + 0.0029167)^180 - 1 ]
This calculation results in a monthly payment of approximately $1,125.67

Over the 15-year term, you would pay a total of $202,622.60, with $42,622.60 going toward interest.

Comparison with 30-Year Mortgages

Here's how a 15-year mortgage compares to a 30-year mortgage for the same $200,000 loan at 3.5% interest with 20% down payment:

Term	Monthly Payment	Total Interest	Total Cost
15 years	$1,125.67	$42,622.60	$202,622.60
30 years	$898.46	$102,622.60	$262,622.60

As you can see, the 15-year mortgage has lower monthly payments but higher total interest costs. The choice between 15-year and 30-year mortgages depends on your financial situation and priorities.

Frequently Asked Questions

What is a 15-year mortgage?

A 15-year mortgage is a home loan that's repaid over 15 years instead of the more common 30-year term. It typically results in lower monthly payments but higher total interest costs compared to a 30-year mortgage.

How do I qualify for a 15-year mortgage?

Qualifying for a 15-year mortgage is similar to qualifying for a 30-year mortgage. Lenders consider your credit score, income, debt-to-income ratio, and employment history. Some lenders may require higher credit scores for 15-year mortgages.

What are the pros and cons of a 15-year mortgage?

Pros: Lower monthly payments, potential tax benefits, and faster payoff. Cons: Higher total interest costs, more interest paid over time, and potential for higher monthly payments if interest rates rise.

Can I refinance a 15-year mortgage to a 30-year mortgage?

Yes, you can refinance a 15-year mortgage to a 30-year mortgage. This can lower your monthly payments but may result in paying more interest over the life of the loan.