15 vs 30 Year Mortgage Calculator

Compare 15-year vs 30-year mortgage options. See monthly payments, total interest, and savings to choose the best mortgage term for your financial goals.

15-Year Fixed

15
Years to Pay Off

30-Year Fixed

30
Years to Pay Off

Loan Details

$
Total purchase price of the home
$
Amount paid upfront (20%)
$
Amount to be financed

Interest Rates

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Understanding 15-Year vs 30-Year Mortgages

Choosing between a 15-year and 30-year mortgage is one of the biggest financial decisions homebuyers face. Each option has distinct advantages depending on your financial goals, current income, and long-term plans.

How This Calculator Works

  1. Enter your home price and down payment amount
  2. Input the interest rates for both 15-year and 30-year options
  3. Click "Compare Mortgages" to see side-by-side results
  4. Review monthly payments, total interest, and savings

Key Factors to Consider

  • Monthly Budget: Can you comfortably afford the higher 15-year payment?
  • Financial Goals: Do you prioritize paying less interest or having more monthly cash?
  • Retirement Timeline: When do you want to be mortgage-free?
  • Other Debts: Do you have high-interest debt that should be paid first?
  • Investment Options: Could you earn more investing the payment difference?

The Math Behind the Decision

A 15-year mortgage typically has a 0.25% to 0.75% lower interest rate than a 30-year mortgage. Combined with the shorter term, this results in dramatically less interest paid over the life of the loan. However, monthly payments are typically 40-50% higher with a 15-year mortgage.

Hybrid Strategy

Some borrowers choose a 30-year mortgage but make extra payments as if it were a 15-year mortgage. This provides flexibility—if finances become tight, you can revert to the lower payment. However, you'll still pay the higher 30-year interest rate on the remaining balance.