15 Year Fixed Mortgage Calculator Refinance

This 15-year fixed mortgage refinance calculator helps you determine the best refinancing options for your current mortgage. By comparing different interest rates and loan terms, you can make an informed decision about whether refinancing will save you money in the long run.

How to Use This Calculator

To use this calculator, follow these simple steps:

Enter your current mortgage balance in the "Current Loan Balance" field.
Input your current interest rate in the "Current Interest Rate" field.
Specify the remaining term of your current mortgage in the "Current Loan Term" field.
Enter the new interest rate you're considering for your refinance in the "New Interest Rate" field.
Click the "Calculate" button to see your refinance options.

The calculator will display your estimated monthly payment, total interest paid, and savings over the life of the loan. You can also view a comparison chart to visualize the differences between your current and refinance options.

Formula and Assumptions

The calculator uses the standard mortgage payment formula to calculate your monthly payments:

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

Where:

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

Assumptions:

The calculator assumes a 15-year fixed refinance term.
It does not account for closing costs, which typically range from 2% to 5% of the loan amount.
Interest rates are assumed to be fixed for the entire 15-year term.
The calculator does not factor in property taxes, insurance, or other fees.

Worked Example

Let's say you have a $200,000 mortgage with a 5-year remaining term and a current interest rate of 4.5%. You're considering refinancing to a 15-year fixed rate of 3.5%.

Using the calculator:

Enter $200,000 as the current loan balance.
Enter 4.5% as the current interest rate.
Enter 5 years as the current loan term.
Enter 3.5% as the new interest rate.
Click "Calculate".

The calculator will show that your current monthly payment is approximately $4,167, while your refinance payment would be about $1,625. Over 15 years, you would save approximately $120,000 in interest payments.

Note: This example assumes no closing costs or other fees. Actual savings may vary based on your specific financial situation.

Frequently Asked Questions

How does refinancing a mortgage to a 15-year term work?

Refinancing to a 15-year term means you're taking out a new mortgage with a shorter repayment period. This typically results in lower monthly payments but higher total interest over the life of the loan compared to a 30-year mortgage.

What are the benefits of refinancing to a 15-year fixed rate?

The main benefits include lower monthly payments, potential tax savings, and the ability to pay off your mortgage faster. However, you'll pay more in interest over the life of the loan.

How do I know if refinancing is right for me?

Consider refinancing if you have good credit, can afford lower payments, and expect to stay in your home for at least 5-7 years. It's important to compare the total cost of refinancing, including closing costs, with the potential savings.

What are the risks of refinancing?

Risks include paying more in interest over the life of the loan, potential closing costs, and the possibility of losing equity if you sell your home before the refinance term ends.