15-Year Mortgage Rates Today: ~6.30% (September 2026)
0.70% below the 30-year rate · Save ~$339,000 interest on a $400K loan
15 vs 30 math · Refinance scenarios · Who should (and shouldn't) go 15-year
15-Year Rates — Quick Answer
15-year fixed mortgage rates average ~6.20%–6.55% in late September 2026, about 0.70% below the 30-year rate (~7.03% per Freddie Mac). The trade-off: on a $400K loan you pay $3,441/month instead of $2,664 — but save ~$339,530 in interest and own your home 15 years sooner. Get your real 15-yr quote →
15-Year vs 30-Year: The $400K Math (Sept 2026 Rates)
| Metric | 15-Year Fixed | 30-Year Fixed |
|---|---|---|
| Rate (Sept 2026) | ~6.30% | ~7.03% |
| Monthly P&I ($400K) | $3,441 | $2,664 |
| Total Interest | $219,380 | $558,910 |
| Interest Saved | — | $339,530 less on 15-yr |
| Debt-Free In | 2041 | 2056 |
| Equity After 5 Yrs | ~$150K paid | ~$32K paid |
Who Should Take the 15-Year in 2026?
✓ Strong fit
- Buyers 40+ who want debt-free retirement
- Refinancers already paying 7.5%+ on a 30-yr
- DTI comfortably under 30% at the higher payment
- Borrowers with 6+ months of reserves after closing
✗ Think twice
- Payment eats 35%+ of gross income
- Thin emergency fund — a 15-yr payment is inflexible
- You could invest the difference at a similar return and want liquidity
- First-time buyers stretching for the house
💡 Hybrid strategy
Take the 30-year for the lower required payment, then pay it like a 15-year. You save ~90% of the interest with an escape hatch if money gets tight. Requires discipline — set up autopay for the extra $777/month.
Refinancing Into a 15-Year in 2026
If you bought or refi'd in 2023-2024 at 7.5-8%, a move to a 15-yr at ~6.30% is one of the strongest plays in the current market:
| Scenario | Payment | Payoff |
|---|---|---|
| Current: $380K at 7.75% (30-yr, 25 yrs left) | $2,843 | 2051 |
| Refi to 15-yr at ~6.30% | $3,270 | 2041 — 10 yrs sooner |
| Interest saved over loan life | ~$230,000 for +$427/month | |
15-Year Rates Vary 0.40% Between Lenders
On $400K that is $95/month — $17,000 over the loan. Two minutes, soft pull only, no SSN for initial quotes.
15-Year Mortgage Rate FAQs — September 2026
What are 15-year mortgage rates today?
As of late September 2026, 15-year fixed mortgage rates average 6.20%-6.55% nationally — about 0.50-0.75% below the 30-year rate (~7.03% per Freddie Mac, Sept 24, 2026). Borrowers with 740+ credit and 20%+ equity/down see quotes in the low-6% range. Compare 15-year rates →
Is a 15-year mortgage worth it at 6.5%?
Yes if you can afford the payment. On a $400K loan at September 2026 rates: 30-yr at 7.03% costs $558K in interest; 15-yr at 6.30% costs $219K — a savings of ~$339,000. The trade-off: monthly payment rises from $2,664 to $3,441 (+$777). Best for buyers 40+, refinancers, and anyone prioritizing debt-free retirement. See your 15-yr payment →
How much lower are 15-year rates than 30-year?
Historically 15-year rates run 0.50-0.75% below 30-year rates. In September 2026 the spread is ~0.70%: 30-yr ~7.03% vs 15-yr ~6.30%. The spread widens when lenders compete for low-risk borrowers — a 15-year loan means the lender gets repaid faster with less rate risk. Compare both terms →
Can I refinance to a 15-year mortgage in 2026?
Yes — and 2026 is a strong year for it if your current rate is 7.5%+. Moving from a 30-yr at 7.5% to a 15-yr at ~6.30% can keep your payment similar while cutting 10+ years off the loan. Run the break-even: if closing costs (~$4K) divide into monthly savings in under 24 months, it usually makes sense. Get a refi quote →
What credit score do I need for the best 15-year rate?
The best 15-year rates (low-6% range in Sept 2026) go to borrowers with 740+ credit and 20%+ down/equity. At 700-739 expect +0.15-0.25%; at 660-699 expect +0.40%; below 660 many lenders quote 15-yr rates near the 30-yr level. FHA 15-year is available at 580+ but adds MIP. Check your tier →
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Meet David
Refinance & Rate Specialist
David Rodriguez is a seasoned refinancing expert with over 10 years of experience in mortgage rate analysis and market trend forecasting. As a Certified Rate Lock Specialist, he has saved homeowners millions in interest payments through strategic refinancing timing. His expertise in Federal Reserve policy impact and mortgage-backed securities makes him a go-to expert for rate predictions and refinancing strategies.
EXPERTISE:
KEY ACHIEVEMENT:
Saved clients $50M+ in interest payments