15 Year Mortgage Rates Refinance Calculator

Refinancing your mortgage to a 15-year term can offer significant savings on interest payments, but it's important to understand how the calculation works and what factors affect your potential savings. This calculator helps you estimate your monthly payments and total interest costs for a 15-year refinance compared to your current mortgage.

How the Calculator Works

The 15-year mortgage refinance calculator uses the standard mortgage payment formula to estimate your monthly payments and total interest costs. The formula accounts for:

Current loan balance
New interest rate
Loan term (15 years)

Mortgage Payment Formula

Monthly Payment = P × (r(1 + r)^n) / ((1 + r)^n - 1)

Where:

P = Principal loan amount
r = Monthly interest rate (annual rate / 12)
n = Number of payments (loan term in years × 12)

The calculator then compares these figures with your current mortgage to show potential savings.

How to Use This Calculator

Enter your current loan balance (the amount you owe on your mortgage)
Input the new interest rate you're considering for your 15-year refinance
Click "Calculate" to see your estimated monthly payments and total interest costs
Compare the results with your current mortgage to evaluate potential savings

Note: This calculator provides estimates only. Actual results may vary based on your specific financial situation and the terms offered by your lender.

Example Calculation

Let's say you currently have a $200,000 mortgage with a 4.5% interest rate and you're considering a 15-year refinance at 3.5%.

Scenario	Monthly Payment	Total Interest
Current 30-year mortgage at 4.5%	$1,073.64	$222,472
15-year refinance at 3.5%	$1,361.82	$166,992

In this example, you would pay $295,828 total over 15 years compared to $422,472 over 30 years, saving $126,644 in interest payments.

Frequently Asked Questions

Is refinancing to a 15-year term right for me?

Refinancing to a 15-year term can save you money on interest payments, but it may increase your monthly payments. Consider your financial situation, including your ability to make higher payments and your plans for homeownership. Consult with a financial advisor before making a decision.

What factors affect my refinance rate?

Your credit score, loan-to-value ratio, property type, and market conditions all influence the interest rate you qualify for. A lower credit score or higher loan-to-value ratio may result in a higher interest rate.

Are there any closing costs for refinancing?

Yes, refinancing typically involves closing costs such as appraisal fees, application fees, and origination fees. These costs can vary depending on your lender and loan type.