30-Year Mortgage Rates Hit 6.95% in September 2026: What Each Move Costs per Month
2026-09-18
Short answer: The Freddie Mac 30-year fixed average was 6.95% for the week ending 17 September 2026, up from 6.76% the week before — the highest since January. On a $400,000 30-year loan that one-week move raises the payment from $2,597.05 to $2,647.79: $50.74 a month, about $18,270 over the full term.
The figure
Freddie Mac’s Primary Mortgage Market Survey put the 30-year fixed average at 6.95% for the week ending 17 September 2026, up from 6.76% the previous week and the highest reading since January.
A 0.19-point move in one week sounds like noise. It is not, because a mortgage rate is applied to a large balance for a long time, and the payment formula is not linear.
The arithmetic
monthly principal and interest = P × r ÷ (1 − (1 + r)^−n)where P is the loan amount, r is the annual rate divided by 12, and n is the number of monthly payments.
On a $400,000 loan over 30 years (n = 360):
| Rate | Monthly P&I | Over 360 payments |
|---|---|---|
| 6.76% | $2,597.05 | $934,938 |
| 6.95% | $2,647.79 | $953,204 |
| Difference | $50.74 | $18,266 |
One week of rate movement, on one loan, is about eighteen thousand dollars of interest across the term. Nothing about the house changed.
Widening it to a full percentage point on the same loan:
| Rate | Monthly P&I |
|---|---|
| 5.95% | $2,385.42 |
| 6.95% | $2,647.79 |
| Difference | $262.37/month |
A useful field approximation at these rates: each percentage point costs roughly 65 a month per 100,000 borrowed.
What this changes
It moves the affordability ceiling, not the price. If your budget is a monthly payment, a rate rise reduces the loan that payment supports. At 6.76%, 2,597 a month supports 400,000; at 6.95% the same 2,597 supports about 392,300. The same buyer, one week apart, qualifies for roughly $7,700 less house.
It raises the value of a bigger down payment. Every dollar you do not borrow avoids the full mortgage rate. At 6.95%, that is a guaranteed 6.95% return on the money, against roughly 4% in a high-yield savings account — with the caveat that savings stay liquid and equity does not.
It makes the rate-lock window an actual decision. A 0.19-point move in seven days is $50 a month for thirty years. If your lock expires before closing, the extension fee is usually cheap relative to what re-pricing at a new rate can cost.
What would reverse the conclusion
- A shorter term. A 15-year loan carries a lower rate and far less total interest, at a much higher payment. Comparing a 30-year and a 15-year on total interest alone always favours the 15 — and ignores whether the payment is survivable in a bad year.
- Points. A rate bought down with discount points has its own break-even: the points divided by the monthly saving gives the number of months you must keep the loan for the buy-down to pay. If you are likely to move or refinance before that month, the points are a loss.
- Refinancing later. A high rate today is not permanent if rates fall and you still qualify. That possibility is real but it is not free — closing costs reset the clock, and the break-even on a refinance is its own calculation.
Run your own numbers in the mortgage payoff calculator →