15 Year Mortgage Refinance Calculator

Use this calculator to determine if refinancing your mortgage to a 15-year term would save you money compared to your current loan. Enter your current loan details and the new refinance terms to compare monthly payments, total interest paid, and potential savings.

How to Use This Calculator

To use the 15-year mortgage refinance calculator:

Enter your current mortgage balance (the amount you owe)
Input your current interest rate (the rate you're paying now)
Specify the remaining term of your current loan (how many years are left)
Enter the new interest rate you're considering for your 15-year refinance
Click "Calculate" to see your results

The calculator will show you:

Your current monthly payment
Your new monthly payment with the 15-year refinance
The difference in monthly payments
Total interest paid over the life of both loans
Potential savings from refinancing

Important Note

This calculator provides estimates only. Actual savings may vary based on closing costs, points, and other factors not included in this calculation.

How Mortgage Refinancing Works

Mortgage refinancing is the process of replacing your current mortgage with a new loan. When you refinance to a 15-year term, you're essentially taking out a new loan with a shorter repayment period and potentially a different interest rate.

The key steps in refinancing include:

Applying for the new loan
Paying closing costs (fees for processing the new loan)
Receiving the new loan proceeds
Using the proceeds to pay off your current mortgage
Starting to make payments on the new loan

Refinancing to a 15-year term can be beneficial if interest rates have dropped since you originally took out your mortgage, allowing you to pay off your loan faster and save on interest.

Benefits of a 15-Year Refinance

Refinancing to a 15-year term offers several potential advantages:

Lower monthly payments: Shorter loan terms typically result in smaller monthly payments
Faster loan payoff: You'll be debt-free sooner, freeing up cash flow
Potential interest savings: If rates have dropped, you might pay less in interest over the life of the loan
Cash-out option: You can access equity in your home to use for other purposes
Improved credit profile: Making payments on time can help your credit score

However, there are also potential drawbacks to consider:

Higher upfront costs (closing costs, points, etc.)
Risk of overpaying if interest rates rise
Stress of paying off a loan faster

Worked Example

Let's look at an example to illustrate how the calculator works. Suppose 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 term at 3.5%.

Current Monthly Payment Calculation

Using the standard mortgage formula:

M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1 ]

Where:

M = monthly payment
P = principal loan amount ($200,000)
i = monthly interest rate (4.5%/12 = 0.375%)
n = number of payments (5 years × 12 = 60 months)

Current monthly payment = $2,875.99

New Monthly Payment Calculation

Using the same formula with the new terms:

i = 3.5%/12 = 0.2917%

n = 15 years × 12 = 180 months

New monthly payment = $1,333.33

In this example, you would save $1,542.66 per month by refinancing to a 15-year term. Over the life of the loan, you would pay $10,222.80 less in interest.

Metric	Current Loan	15-Year Refinance
Monthly Payment	$2,875.99	$1,333.33
Total Interest Paid	$12,333.33	$2,110.53
Total Payments	$212,333.33	$202,110.53

Frequently Asked Questions

Is refinancing to a 15-year term always a good idea?

Not necessarily. While a 15-year refinance can save you money on interest, you should consider factors like closing costs, the risk of rising interest rates, and your financial goals. It's important to compare all options carefully.

How much can I save by refinancing to a 15-year term?

Savings vary based on your current loan terms, the new interest rate, and other factors. Use this calculator to estimate your potential savings. Keep in mind that actual savings may be less due to closing costs and other fees.

What are the closing costs for refinancing?

Closing costs typically range from 2% to 5% of your loan amount and can include fees for appraisal, title insurance, origination, and other services. These costs are not included in this calculator but should be considered when deciding to refinance.

Can I refinance if I have bad credit?

It's more difficult to refinance with bad credit, but some lenders specialize in helping borrowers with less-than-perfect credit. You may need to pay higher interest rates or closing costs to qualify.

How long does the refinancing process take?

The refinancing process typically takes 30 to 45 days from application to closing. This can vary depending on your lender, the complexity of your loan, and whether you need an appraisal.