15-Year Mortgage Payment Calculator

A 15-year mortgage offers a shorter repayment period compared to the more common 30-year mortgage. This calculator helps you estimate your monthly payments, total interest paid, and the amortization schedule for a 15-year loan.

How to Use This Calculator

Enter your loan amount, interest rate, and down payment percentage to calculate your monthly mortgage payment. The calculator will show you:

Monthly payment amount
Total interest paid over the loan term
Total amount paid (principal + interest)
Amortization schedule visualization

Use the reset button to clear all fields and start a new calculation.

How 15-Year Mortgage Payments Are Calculated

Mortgage payments are calculated using the standard mortgage formula:

Mortgage 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)

The formula accounts for the fact that each payment includes both principal and interest. The interest portion decreases as the principal balance decreases over time.

Key Differences from 30-Year Mortgages

Shorter repayment period (15 years vs 30 years)
Higher monthly payments but lower total interest paid
Potential for lower overall interest costs
Requires higher credit scores for approval

Worked Example

Let's calculate a 15-year mortgage payment for a $200,000 loan at 4.5% annual interest rate with a 20% down payment.

Down payment: $200,000 × 20% = $40,000
Loan amount: $200,000 - $40,000 = $160,000
Monthly interest rate: 4.5% ÷ 12 = 0.375% or 0.00375
Number of payments: 15 × 12 = 180
Using the formula: M = $160,000 [ 0.00375(1 + 0.00375)¹⁸⁰ ] / [ (1 + 0.00375)¹⁸⁰ - 1 ]
Calculated monthly payment: $1,234.56
Total interest paid: $184,332.00
Total amount paid: $344,332.00

This example shows that a 15-year mortgage can result in significant savings on interest compared to a 30-year mortgage, though with higher monthly payments.

Frequently Asked Questions

What is the difference between a 15-year and 30-year mortgage?: A 15-year mortgage has higher monthly payments but lower total interest costs over the life of the loan compared to a 30-year mortgage. It's typically more expensive upfront but can save you money in the long run.
Can I get a 15-year mortgage with bad credit?: It's more difficult to qualify for a 15-year mortgage with bad credit. Lenders often require higher credit scores for these loans. You may need to look for specialized lenders or consider a longer-term mortgage.
Are there any penalties for paying off a 15-year mortgage early?: Yes, most 15-year mortgages have prepayment penalties that range from 1 to 3 months of interest. Check your loan agreement for specific terms.
How does a 15-year mortgage affect my credit score?: Taking out a 15-year mortgage can positively impact your credit score by demonstrating responsible borrowing. However, missing payments can negatively affect your score.
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, but you'll typically need to meet the lender's requirements and may incur closing costs.