15-Year vs 30-Year Mortgage: Which Saves You More?
The two most popular mortgage terms are 15 and 30 years. The shorter term saves a huge amount of interest; the longer term keeps the monthly payment low. Which is better depends on your budget, your other goals and how much flexibility you want.
Side-by-side example
A $300,000 loan, where the 15-year loan gets a slightly lower rate, as it usually does:
| 30-year at 6.5% | 15-year at 5.75% | |
|---|---|---|
| Monthly principal and interest | $1,896.20 | $2,491.23 |
| Total interest | about $382,600 | about $148,400 |
| Difference | 15-year costs $595 more a month but saves about $234,000 in interest | |
Run your own comparison with the mortgage calculator and the amortization schedule.
Why the 15-year term saves so much
- Fewer years of interest: you borrow the money for half as long.
- A lower rate: lenders usually charge less for shorter loans.
- Faster equity: more of each payment goes to principal from the start.
When a 30-year mortgage makes sense
- The lower payment keeps your budget comfortable and leaves room for an emergency fund.
- You want to invest the difference or pay off higher-interest debt first.
- Your income is variable, and a lower required payment reduces risk.
- It helps you qualify for the home you need.
When a 15-year mortgage makes sense
- You can comfortably afford the higher payment while still saving for retirement and emergencies.
- You want to be mortgage-free sooner, for example before retirement.
- You value the guaranteed "return" of paying off debt.
The middle path
Many people take a 30-year loan for flexibility, then pay extra each month as if it were a shorter loan. If money gets tight, they can drop back to the required payment. Check that your loan has no prepayment penalty, and see the effect with the loan payoff calculator.
Questions to ask yourself
- Could I still afford the higher payment if my income fell or a big bill arrived?
- Am I already saving enough for retirement?
- Do I have higher-interest debt to clear first?
- How long do I plan to stay in the home?
This guide is for general education and planning. It is not personal financial, medical, tax or legal advice. See our disclaimer.
