15- vs 30-Year Mortgage: Which Term Should You Choose?
6 min read · Educational guide
The mortgage term — how many years you take to pay off the loan — is one of the biggest financial decisions most people make, and the choice usually comes down to 15 vs 30 years. They’re a trade between total cost and monthly flexibility.
The core trade-off
- 15-year: much higher monthly payment, but you pay off the home in half the time and save an enormous amount of interest. Lenders also typically offer a slightly lower rate.
- 30-year: lower, more manageable monthly payment and more room in your budget — but you pay far more total interest over the life of the loan.
The gap is often startling. On a $400,000 loan, the difference in total interest between a 15- and 30-year term can run well into six figures. Plug your numbers into the mortgage calculator with each term to see your own comparison.
Who a 15-year suits
- You can comfortably afford the higher payment and still save/invest.
- You value being debt-free sooner (e.g. before retirement or college costs).
- You’re motivated by minimizing total interest.
Who a 30-year suits
- You want a lower required payment and more monthly breathing room.
- You’d rather invest the payment difference (potentially out-earning the mortgage rate).
- Your income is variable and you value flexibility over speed.
The strategy that captures both
Here’s a popular middle path: take the 30-year loan, but make payments as if it were a 15-year.The extra principal each month shortens the loan dramatically and slashes interest — yet if money gets tight, you can fall back to the lower required 30-year payment. You buy the 15-year’s savings andthe 30-year’s safety net. The one cost is the slightly higher 30-year rate.
Don’t forget affordability
Whichever term, make sure the payment fits a healthy budget — the home affordability calculator applies the 28/36 rule, and our mortgage basics guide covers the full PITI payment. If you already have a loan and rates have dropped, shortening the term via a refi can be powerful — see when to refinance and the refinance calculator.
There’s no universally right answer — only the right answer for your budget, your goals, and your discipline. Run both terms, look at the total interest, and choose with eyes open.