15-Year vs. 30-Year: Higher Payments, Massive Interest Savings
Compare 15-year and 30-year fixed mortgages. See the exact payment difference, total interest saved, and which term fits your financial goals. The math might surprise you.
15-Year vs. 30-Year: The Numbers
A 15-year mortgage has higher monthly payments but saves a staggering amount in interest. On a $400,000 loan, the difference in total interest paid can exceed $200,000. Here is a real-world comparison using current-range rates:
| Feature | 15-Year Fixed | 30-Year Fixed |
|---|---|---|
| Typical Rate | ~5.90% | ~6.50% |
| Monthly P&I ($400K loan) | $3,357 | $2,528 |
| Total Interest Paid | $204,260 | $510,080 |
| Total Cost (P+I) | $604,260 | $910,080 |
| Interest Savings | $305,820 saved with 15-year | |
Key Differences
When to Choose 15-Year
- The higher payment is comfortable — should be no more than 25% of gross income
- You are mid-career or older — want the home paid off before retirement
- You want to build wealth faster — forced equity building accelerates net worth
- You are refinancing — dropping from a 30-year to 15-year maximizes refi savings
When to Choose 30-Year
- You need the lower payment to qualify — the DTI math works better at lower payments
- You want maximum flexibility — can pay extra when able, minimum when needed
- You would invest the difference — if stock market returns exceed your mortgage rate, 30-year + investing may win
- You are a first-time buyer — lower payments ease the transition to homeownership
The Hybrid Strategy
Many financial advisors recommend taking a 30-year mortgage but making extra payments as if it were a 15-year. This gives you the safety net of a lower required payment while still building equity quickly. If an emergency arises, you can drop back to the minimum 30-year payment. The tradeoff: you will pay a slightly higher interest rate than a true 15-year loan.
If you can comfortably afford the higher payment, the 15-year mortgage is the clear mathematical winner — saving $200,000–$300,000+ in interest on a typical loan. But if the higher payment would strain your budget, the 30-year provides needed flexibility. Use our mortgage calculator to compare both options with your specific numbers.
Check rates: 15-year rates vs. 30-year rates. Use our amortization schedule to see the full payment breakdown for each term.