When choosing a fixed-rate mortgage, the most important decision you will make is the term length. The vast majority of buyers select a 30-year mortgage because it offers lower monthly payments. However, a 15-year fixed mortgage offers significant advantages in interest savings and equity building.
Comparing the Two Options
To understand the trade-offs, let us examine how these two loan terms compare in terms of payments, interest rates, and total cost:
1. Monthly Payments
Because you are repaying the principal balance in half the time, a 15-year mortgage requires significantly higher monthly payments. Typically, a 15-year mortgage payment is 30% to 50% higher than a 30-year payment for the same home value.
2. Interest Rates
Lenders view 15-year loans as less risky because the money is repaid faster. As a result, 15-year mortgages carry lower interest rates than 30-year mortgages—often by 0.5% to 0.75%. This spread contributes heavily to the total interest savings.
3. Equity Accumulation
With a 15-year mortgage, a much larger portion of your monthly payment goes toward the principal from day one. You will build equity and own your home outright twice as fast as you would with a 30-year loan.
"On a $300,000 loan, a 15-year fixed mortgage at 5.5% will save you over $170,000 in total interest compared to a 30-year fixed mortgage at 6.25%."
Which Term Is Right for You?
Consider the following guidelines to help make your decision:
- Choose a 30-Year Mortgage if: You want to maximize your monthly cashflow, purchase a larger home, or invest your spare cash in other markets (such as index funds or retirement accounts).
- Choose a 15-Year Mortgage if: You want to pay off your home debt before retirement, secure the lowest possible interest rate, and maximize your guaranteed, risk-free interest savings.