Is a 15-Year Mortgage Worth It?
The 15-year mortgage is one of the most powerful wealth-building tools available to homeowners — if you can afford the higher payment. The interest savings are dramatic, equity builds twice as fast, and you own your home outright in half the time. But the higher monthly payment requires careful budgeting.
15 vs 30 Year — The Real Numbers
| Factor | 15-Year | 30-Year |
|---|---|---|
| Monthly payment (on $280K loan) | ~$2,440 | ~$1,864 |
| Total interest paid | ~$159,000 | ~$391,000 |
| Interest saved | $232,000 less | Baseline |
| Equity at year 5 | ~$75,000 | ~$25,000 |
| Interest rate | Typically 0.5-0.75% lower | Higher |
Who Should Choose a 15-Year Mortgage?
- People within 15-20 years of retirement — own your home free and clear before you retire, eliminating your biggest expense
- Those with stable high income — the higher payment requires confidence in your income stability
- People who want to build equity fast — especially useful in markets where home values appreciate quickly
- Those who hate paying interest — the emotional satisfaction of dramatically less interest is real
Who Should Choose a 30-Year Mortgage?
- People with other high-interest debt — lower mortgage payment frees cash to attack higher-rate debt
- Those maximizing retirement contributions — the payment difference invested at 7% can outperform the interest savings
- People who value cash flow flexibility — lower required payment is a financial safety net
- First-time buyers stretching affordability — the lower payment makes homeownership possible
The Middle Path — 30-Year with Extra Payments
Many financial advisors recommend this strategy: take the 30-year for the lower required payment and flexibility, but make extra principal payments when cash flow allows. This gives you the security of a lower minimum payment while accelerating equity when times are good. You effectively create your own 15-year mortgage without the commitment.
Do 15-year mortgages have lower interest rates?
Yes — typically 0.5% to 0.75% lower than 30-year rates. This compounds the savings on top of the shorter term, making the total interest difference even more dramatic than the term alone would suggest.
Can I switch from 30 to 15 years later?
Yes — by refinancing. If rates drop or your income increases significantly, refinancing from a 30-year to a 15-year is a common strategy. You will need to qualify again and pay closing costs, but the long-term savings often justify it.
Is my data private when I use this calculator?
Completely. All calculations run in your browser. Your financial details never leave your device and no lenders will contact you.