Is a Shorter Mortgage Term Worth It?
A shorter mortgage term — 15 years being the most common — 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 much faster, and you own your home outright in a fraction of 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.
What's the payment difference on a $400,000 loan?
On a $400,000 loan at recent rates (about 5.79% for 15 years and 6.43% for 30 years), the 15-year payment is roughly $3,330 per month versus about $2,510 for the 30-year — a difference of around $820 per month. But the 15-year saves roughly $304,000 in total interest and pays the loan off 15 years sooner. Your exact numbers depend on your rate, so enter them in the calculator above.