Refinance 15 Yr Mortgage Calculator

Refinancing your mortgage to a 15-year term can significantly reduce your monthly payments and save you money on interest over the life of the loan. This calculator helps you determine exactly how much you'll save by comparing your current mortgage with a new 15-year refinance.

How to Refinance Your Mortgage

Refinancing involves replacing your existing mortgage with a new loan. For a 15-year refinance, you'll typically need to meet these requirements:

Good credit score (usually 620 or higher)
Sufficient equity in your home (typically 10-20%)
Stable income and employment history
No major life changes that would affect your ability to repay

The process usually takes 30-60 days and involves these steps:

Check your credit score and equity position
Compare rates and terms from multiple lenders
Choose between a rate-and-term refinance or cash-out refinance
Apply for pre-approval
Submit required documents to the lender
Close on the new loan

Before refinancing, carefully consider your financial situation. A 15-year refinance may not be right if you plan to sell your home soon or if you can get a better rate with a longer-term loan.

Benefits of a 15-Year Refinance

A 15-year mortgage offers several advantages over longer-term loans:

Lower monthly payments: The shorter term means you'll pay off more principal each month, reducing your payment amount.
Faster payoff: You'll own your home outright in just 15 years instead of 30.
Potential tax benefits: You may be able to deduct mortgage interest and property taxes.
Lower total interest: While you'll pay more in total interest over the life of the loan, the shorter term can save you money compared to a 30-year loan.

However, there are also some considerations:

You'll pay more in total interest over the life of the loan
You'll lose equity faster if interest rates rise
You may not qualify if you have less than 20% equity

Comparison of 15-Year vs 30-Year Mortgage Terms
Feature	15-Year Mortgage	30-Year Mortgage
Monthly payment	Lower	Higher
Interest paid over life of loan	Higher	Lower
Time to pay off	15 years	30 years
Equity growth	Slower	Faster

Using the Calculator

Our refinance 15 yr mortgage calculator lets you compare your current mortgage with a potential 15-year refinance. Simply enter your current loan details and the new loan terms you're considering, then click "Calculate" to see the results.

The calculator shows:

Your current monthly payment
The new monthly payment with a 15-year refinance
The amount you'll save each month
The total interest you'll pay over the life of the loan
A comparison chart showing your payment over time

You can also adjust the interest rate and loan amount to see how different terms affect your savings.

How the Calculation Works

The calculator uses the standard 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 / 12) n = number of payments (loan term in years × 12)

The calculator then compares this with your current payment to show the savings. It also calculates the total interest paid over the life of the loan by multiplying the monthly payment by the number of payments and subtracting the principal.

Worked Example

Let's say you have a $200,000 mortgage with a 30-year term at 6% interest. Your current monthly payment is $1,264.71. If you refinance to a 15-year term at the same 6% rate, your new monthly payment would be $1,795.34.

In this example:

You'd save $469.37 each month
You'd pay $1,795.34 for 15 years instead of $1,264.71 for 30 years
You'd pay $119,720 in total interest over 15 years compared to $189,106 over 30 years

This example shows how a 15-year refinance can significantly reduce your monthly payment while increasing your total interest cost.

Frequently Asked Questions

How much can I save with a 15-year refinance?: You can typically save $300-$800 per month, depending on your current loan terms and the new interest rate. However, you'll pay more in total interest over the life of the loan.
What's the minimum credit score needed for a 15-year refinance?: Most lenders require a credit score of at least 620, though some may accept scores as low as 580. A higher score can get you a better interest rate.
How long does it take to refinance?: The process typically takes 30-60 days, though some lenders can approve and fund in as little as 7-14 days. The exact time depends on your lender and whether you need to order credit reports.
Can I refinance if I have less than 20% equity?: Most lenders require at least 20% equity to qualify for a 15-year refinance. Some may accept as little as 10%, but you'll need to pay private mortgage insurance (PMI).
What are the closing costs for a refinance?: Closing costs typically range from 2-5% of the loan amount, including fees for appraisal, title insurance, and origination. Some lenders offer discounts or waivers for certain fees.