WASHINGTON, DC — Mortgage rates climbed to their highest point in nearly 18 months this week, pushing the average 30-year fixed loan to 6.95% for the week ending Sept. 17, according to Freddie Mac.
The move was up 19 basis points from 6.76% the prior week and marked the highest average since January 2025. A year earlier, the average sat at 6.26%, showing how much borrowing costs have risen over the past 12 months.
Realtor.com used that rate to show what the math looks like for a typical U.S. homebuyer trying to finance a $430,000 property.
Why rates moved higher this week
Freddie Mac said mortgage rates were pulled upward by higher inflation expectations, which pushed bond yields higher and carried home-loan rates with them. That connection matters because long-term mortgage pricing tends to follow the bond market closely.
The latest jump came after a stretch of elevated borrowing costs that has already made home purchases more expensive for many households. Even before the recent rise, rates had remained far above the levels buyers saw in earlier years.
Although the weekly move was sharp, the bigger picture is that lenders are still pricing loans near the upper end of this year’s range. For buyers, that means monthly payments can change quickly even when home prices stay flat.
What a 20 percent down payment looks like at 6.95 percent
On a $430,000 home, a 20% down payment would bring the loan amount to $344,000. At 6.95%, the monthly principal and interest payment works out to $2,277.
That is $157 more per month than the $2,120 payment calculated a year ago at the 6.26% average rate. Over time, that difference adds up to a meaningful increase in the cost of buying the same home.
For households comparing options, the conventional loan example shows how a relatively small move in interest rates can change affordability even when the down payment stays substantial. The monthly bill is still manageable for some buyers, but it is clearly higher than it was last year.
FHA borrowers face a larger monthly bill
Buyers using an FHA loan with a 3.5% down payment would borrow $414,950 on the same $430,000 home. At the current rate, that payment comes to $2,747 a month for principal and interest.
That is up from $2,694 the week before, a monthly increase of $53. Compared with last year’s 6.26% average rate, the payment is $190 higher than the $2,557 calculated then.
Realtor.com also said the FHA payment is still below the $2,984 monthly cost buyers faced at the October 2023 peak rate of 7.79%. That means today’s conditions are tougher than a year ago, but still better than the worst point in the recent rate spike.
The 30 year cost difference remains large
Short-term affordability is only part of the story. Over a full 30-year mortgage, a borrower putting 20% down would pay $819,720 in principal and interest at 6.95%.
That is $70,920 less than the $890,640 total cost tied to the October 2023 peak rate of 7.79%. Even with rates near a high for the year, buyers locking in now are still avoiding some of the steepest long-term borrowing costs seen recently.
For families thinking beyond the first monthly bill, the lifetime difference can matter as much as the payment itself. A rate change of less than a point can shift the total cost of financing by tens of thousands of dollars.
Lower down payments still mean nearly seven figures in interest
The numbers become even larger for buyers making a 3.5% down payment. On a 30-year FHA loan, total principal and interest payments would reach $988,920 at the current rate.
That is still $85,320 less than the $1,074,240 total cost associated with the October 2023 peak of 7.79%. The savings are substantial, but the overall borrowing cost is close to seven figures.
Those figures show the tradeoff facing many first-time buyers: a lower upfront barrier can make the purchase possible, but it also leaves them carrying a much larger balance for decades. As rates rise, that long-term burden becomes harder to ignore.
More on what homes, rents and new builds are doing near you, on RHS Commoner.
