Refinance Calculator 30 to 15

Use this refinance calculator to compare your monthly payments, total interest paid, and payoff dates when switching from a 30-year mortgage to a 15-year mortgage. Enter your loan amount, current interest rate, and new interest rate to see how much you could save.

How to Use This Calculator

To use this refinance calculator:

Enter your current loan amount in the "Current Loan Amount" field.
Enter your current interest rate in the "Current Interest Rate" field.
Enter your new interest rate in the "New Interest Rate" field.
Click the "Calculate" button to see your results.
Review the comparison of your 30-year and 15-year mortgage options.

The calculator will show you:

Monthly payment for both loan terms
Total interest paid over the life of the loan
Total amount paid (principal + interest)
Payoff date for each loan term
A chart comparing the two loan options

How Refinancing 30 to 15 Works

Refinancing your mortgage from a 30-year term to a 15-year term can help you pay off your home faster and save on interest costs. Here's how it works:

Mortgage Amortization

A mortgage is an amortizing loan, meaning the principal and interest are paid off in equal monthly installments over the life of the loan. The formula for calculating monthly payments is:

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)

When you refinance from a 30-year to a 15-year term, you're essentially shortening the loan term, which typically results in higher monthly payments but lower total interest paid over the life of the loan.

Interest Rate Impact

The interest rate you qualify for when refinancing can significantly impact your savings. A lower interest rate will reduce your monthly payments and total interest paid. Conversely, a higher interest rate will increase these amounts.

Note: Refinancing typically requires closing costs, which can range from 2% to 5% of the loan amount. These costs should be factored into your decision to refinance.

Example Calculation

Let's look at an example to illustrate how the refinance calculator works. Suppose you have a $200,000 mortgage with a current interest rate of 6% and you're considering refinancing to a 15-year term with a new interest rate of 5%.

Term	Monthly Payment	Total Interest Paid	Total Amount Paid	Payoff Date
30-Year (6%)	$1,243.56	$290,468	$490,468	2045
15-Year (5%)	$1,636.90	$190,535	$390,535	2030

In this example, refinancing from a 30-year to a 15-year mortgage at a lower interest rate saves you $99,933 in total interest payments and pays off your loan 15 years earlier.

30-Year vs 15-Year Comparison

Here's a comparison of the key differences between a 30-year and 15-year mortgage:

Feature	30-Year Mortgage	15-Year Mortgage
Loan Term	30 years	15 years
Monthly Payments	Lower (but over longer period)	Higher (but over shorter period)
Total Interest Paid	Higher	Lower
Payoff Date	Later	Earlier
Interest Rate Impact	Lower rates save more over time	Lower rates save more immediately
Closing Costs	Typically lower	Typically higher

When deciding between a 30-year and 15-year mortgage, consider your financial goals, risk tolerance, and ability to make higher monthly payments. A 15-year mortgage can be a good option if you want to pay off your home faster and save on interest costs, but it requires a higher initial investment.

Frequently Asked Questions

How much can I save by refinancing from a 30-year to a 15-year mortgage?

The amount you can save depends on your loan amount, current interest rate, and new interest rate. Generally, refinancing to a 15-year term can save you thousands in interest payments and pay off your loan 15 years earlier. Use this calculator to get an exact estimate for your situation.

What are the closing costs for refinancing?

Closing costs for refinancing typically range from 2% to 5% of the loan amount. These costs can include appraisal fees, title insurance, origination fees, and other expenses. Make sure to factor these costs into your decision to refinance.

Can I refinance if I have bad credit?

Refinancing with bad credit is possible but may require a higher interest rate or less favorable terms. You may need to explore options like FHA streamline refinancing or jumbo loan refinancing. It's important to shop around and compare offers from multiple lenders.

How long does it take to refinance a mortgage?

The refinancing process typically takes 30 to 45 days, but it can vary depending on your lender, the type of loan, and your financial situation. Some lenders offer expedited processing for an additional fee.

Is it better to refinance or extend my mortgage?

Refinancing is generally better than extending your mortgage if you can secure a lower interest rate. Extending your mortgage typically results in higher monthly payments and more total interest paid. However, there may be situations where extending is the better option, such as if you're in a temporary financial hardship.