15 Year Home Mortgage Calculator

Use this 15-year home mortgage calculator to estimate your monthly payments, total interest paid, and loan amortization schedule. This tool helps you understand the financial commitment of a 15-year mortgage compared to longer-term loans.

How the 15-Year Mortgage Calculator Works

A 15-year mortgage offers lower monthly payments than a 30-year mortgage, but you'll pay more in total interest over the life of the loan. The calculator uses the standard mortgage payment formula to determine your monthly payment based on the loan amount, interest rate, and term.

Key Features

Calculate monthly payments for a 15-year mortgage
View total interest paid over the loan term
See a breakdown of principal and interest payments
Compare with 30-year mortgage options

When to Consider a 15-Year Mortgage

15-year mortgages may be suitable for:

Homeowners who plan to sell or refinance within 15 years
Those with excellent credit scores who qualify for lower interest rates
Investors looking for shorter-term financing

Note: While 15-year mortgages offer lower monthly payments, they typically have higher interest rates and require more principal payments in the early years of the loan.

Mortgage Payment Formula

The standard mortgage payment formula is:

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)

For a 15-year mortgage, n would be 180 (15 × 12).

Assumptions

Fixed interest rate throughout the loan term
No prepayment penalties
No additional costs like private mortgage insurance

Worked Example

Let's calculate a 15-year mortgage with these parameters:

Loan amount: $200,000
Annual interest rate: 4.5%
Loan term: 15 years

Monthly interest rate = 4.5% ÷ 12 = 0.375% or 0.00375

Number of payments = 15 × 12 = 180

Monthly payment = $200,000 [ 0.00375(1 + 0.00375)¹⁸⁰ ] / [ (1 + 0.00375)¹⁸⁰ - 1 ]

Calculated monthly payment = $1,432.48

Over 15 years, you would pay:

Total payments: $1432.48 × 180 = $257,846.40
Total interest: $257,846.40 - $200,000 = $57,846.40

15-Year Mortgage Comparison
Loan Term	Monthly Payment	Total Interest
15 years	$1,432.48	$57,846.40
30 years	$995.26	$148,838.80

Frequently Asked Questions

What is the difference between a 15-year and 30-year mortgage?

A 15-year mortgage typically has lower monthly payments but higher total interest costs. A 30-year mortgage has lower total interest but higher monthly payments. The choice depends on your financial situation and goals.

Can I get a 15-year mortgage with bad credit?

It's very difficult to qualify for a 15-year mortgage with bad credit. Most lenders require excellent credit scores (typically 720 or higher) for these loans. Consider a 30-year mortgage if you have lower credit scores.

Are there any closing costs for a 15-year mortgage?

Yes, 15-year mortgages typically have higher closing costs than 30-year mortgages, often including points to secure a lower interest rate. Always factor in closing costs when comparing loan options.