15 vs 30 Year Mortgage
Compare 15-year and 30-year fixed-rate mortgages using current 2026 Freddie Mac rates. See the real monthly payment difference and total interest savings — typically $200,000-400,000 over the life of the loan in favor of the 15-year.
Last updated: April 2026 · Source: Freddie Mac PMMS, April 2, 2026
Side-by-side comparison
| Metric | 30-year | 15-year | Difference |
|---|---|---|---|
| Interest rate | 6.46% | 5.77% | -0.69% |
| Monthly P&I | $2,518 | $3,326 | +$808 |
| Total interest | $506,393 | $198,667 | -$307,727 |
| Total paid | $906,393 | $598,667 | -$307,727 |
| Years to payoff | 30 years | 15 years | -15 years |
Frequently asked questions
What is the main difference between a 15-year and 30-year mortgage?
A 15-year mortgage has a higher monthly payment but a lower interest rate, builds equity twice as fast, and saves you hundreds of thousands in total interest. A 30-year mortgage has a lower monthly payment, a higher rate, and costs significantly more over the life of the loan but offers more breathing room in your monthly budget. As of April 2026, Freddie Mac reports the 30-year fixed averaging 6.46% and the 15-year averaging 5.77% — a 0.69% rate gap that compounds dramatically over the loan term.
How much higher is the monthly payment on a 15-year mortgage?
For a $400,000 loan at current 2026 rates: 30-year at 6.46% = $2,520/month. 15-year at 5.77% = $3,328/month. That is a $808 monthly difference, or about 32% higher. As a rough rule of thumb, the 15-year monthly payment is typically 30-50% higher than the 30-year, depending on the rate spread between the two terms. The percentage difference shrinks when rates are high and grows when rates are low.
How much total interest do I save with a 15-year mortgage?
Massive — usually $200,000-400,000 on a typical loan. For the $400,000 example: 30-year total interest = about $507,000. 15-year total interest = about $200,000. That is $307,000 saved over the life of the loan. Even better, you own the home free and clear 15 years sooner, which frees up $3,328/month for retirement savings or other goals during years 16-30.
Is a 15-year mortgage always better?
No. The 15-year is mathematically optimal if your only goal is minimizing interest paid, but real life has tradeoffs: (1) The higher payment may strain your budget and leave no room for retirement savings, emergency funds, or unexpected expenses. (2) If you would otherwise invest the payment difference in a diversified portfolio earning 7-10%, you could potentially come out ahead with a 30-year mortgage. (3) A 15-year locks you into higher payments — if your income drops, you have no flexibility. The right answer depends on your full financial picture, not just the mortgage math.
Can I get a 15-year mortgage and pay it off like a 30-year if needed?
No — once you commit to a 15-year, the higher payment is contractual. You cannot reduce it later if your finances change. However, the reverse works perfectly: take a 30-year mortgage and voluntarily pay extra principal each month to mimic a 15-year schedule. On the same $400K loan, paying $810 extra per month on a 30-year roughly matches the 15-year payoff time, AND gives you the flexibility to skip the extra payment in tight months. The downside is you pay the higher 30-year rate (6.46% vs 5.77% currently).
Why is the 15-year rate lower than the 30-year?
Because lenders take less risk on shorter-term loans. With a 15-year mortgage, the lender gets their money back faster, faces less inflation risk, and has less exposure to default risk over time. Mortgage-backed securities for 15-year loans also trade at a premium compared to 30-year MBS, so lenders can offer borrowers a lower rate. The spread between 15-year and 30-year rates is typically 0.5-0.75% — currently 0.69% — but it widens when investors are worried about long-term inflation and narrows when rates are expected to fall.
Should young first-time buyers go with a 15-year mortgage?
Usually not. First-time buyers typically have lower incomes, need to build emergency savings, are starting retirement accounts, and may have student loans. The lower 30-year payment provides essential financial flexibility during this life stage. The math also favors investing the payment difference in tax-advantaged retirement accounts (Roth IRA, 401k match) over the equivalent in mortgage paydown for younger borrowers with longer time horizons. As you age and income grows, refinancing into a 15-year (or paying extra principal) becomes more practical.
Is a 15-year mortgage better than refinancing later?
It depends on your time horizon and cash flow. Taking a 15-year up front locks in the lower rate immediately and forces discipline. Taking a 30-year and refinancing later gives you flexibility but assumes you will actually have the discipline to refinance — and rates might be higher when you do. For homeowners who are confident in their income and have a long-term financial plan, the 15-year often wins. For those whose income is variable or who value flexibility, the 30-year with the option to refinance is the safer choice.
How much faster does a 15-year mortgage build equity?
Much faster — roughly 2-3x faster in the early years. After 5 years on a $400K loan: 30-year mortgage equity = about $42,000 (just 11% of the loan paid down). 15-year mortgage equity = about $108,000 (27% paid down). After 10 years: 30-year = about $98,000, 15-year = about $238,000. This faster equity accumulation matters if you plan to sell or use a home equity loan, but it also means more of your money is tied up in an illiquid asset.
What happens if I can no longer afford the 15-year payment?
You have limited options. Unlike a 30-year mortgage where the payment is already low, a 15-year leaves no room to "cut back." Your choices are: (1) refinance into a 30-year mortgage to lower the payment, but you reset the amortization clock and may face higher current rates, (2) sell the home, or (3) request loan forbearance from your servicer for a temporary hardship. This is why financial advisors typically recommend a 15-year only if you have at least 6 months of emergency savings AND your housing payment stays below 25% of take-home pay.
Is a 20-year mortgage a good middle ground?
Yes, and they are underused. A 20-year mortgage typically offers a rate between 15 and 30-year (currently around 6.10%), with a payment about 15-20% higher than a 30-year and total interest savings of $150,000-200,000 versus a 30-year. The 20-year is a good compromise for borrowers who find the 15-year payment too high but want to pay off the loan well before retirement. Not all lenders offer 20-year mortgages — you may need to specifically request it.
Does the 30-year mortgage exist anywhere else in the world?
The 30-year fixed-rate mortgage is largely a US phenomenon. It exists because of Fannie Mae and Freddie Mac, which were created during the Great Depression and the 1970s to securitize long-term mortgages and remove interest rate risk from banks. Most other countries use shorter-term fixed mortgages (5-10 years) that then convert to variable rates, or pure variable-rate mortgages. UK, Canada, Australia, and most of Europe have nothing comparable to the US 30-year fixed.
Data sources: Freddie Mac Primary Mortgage Market Survey (PMMS), April 2, 2026.
Last updated: April 2026.
Disclaimer: Rate spreads between 15-year and 30-year mortgages vary daily. Always get personalized rate quotes from multiple lenders before deciding. The right loan term depends on your full financial situation, not just the math.