--- title: "Mortgage rates slip to 6.65%, but borrowers still pay more than a year ago" description: "The average 30-year fixed mortgage fell to 6.65% this week from 6.67%, according to Freddie Mac's weekly survey. That two-basis-point move is worth about $5 a month on a $400,000 loan, and rates are still 7 basis points above where they stood a year ago. Here is what actually sets the number, and why the Federal Reserve is not it." category: "Personal Finance" category_url: https://boursel.com/category/personal-finance author: "Priya Venkatesan" published: 2026-08-21T05:12:00.000Z updated: 2026-08-21T05:12:00.000Z canonical: https://boursel.com/article/mortgage-rates-slip-to-6-65-percent-but-borrowers-still-pay-more-than-a-year-ago tags: ["mortgages", "interest-rates", "housing", "treasury-yields", "homebuying"] --- # Mortgage rates slip to 6.65%, but borrowers still pay more than a year ago The average 30-year fixed mortgage fell to 6.65% this week from 6.67%, according to Freddie Mac's weekly survey. That two-basis-point move is worth about $5 a month on a $400,000 loan, and rates are still 7 basis points above where they stood a year ago. Here is what actually sets the number, and why the Federal Reserve is not it. The 30-year fixed-rate mortgage averaged 6.65% in the week to August 20, down from 6.67%, and the 15-year fixed averaged 5.95%, down from 5.96%, [according to Freddie Mac's Primary Mortgage Market Survey](https://www.freddiemac.com/pmms). It is the second consecutive weekly decline. It is also a very small one, and worth putting in proportion before anyone reads a trend into it. ## What two basis points is worth On a $400,000 loan over 30 years, the payment at 6.67% is about $2,573 a month. At 6.65% it is about $2,568. The difference is roughly $5.30 a month, or about $1,900 over the full 30 years if the loan is never refinanced or repaid early. On a $300,000 loan the saving is closer to $4 a month. The more useful comparison runs the other way. Freddie Mac's survey put the 30-year average at 6.58% a year ago. A borrower taking out the same $400,000 loan today pays about $18.50 a month more than one who signed twelve months ago, roughly $6,700 over the life of the loan. Rates have edged down over two weeks; they have not come down over a year. ## The Fed is not what sets your mortgage rate This is the most common misreading in household finance. The Federal Reserve sets the federal funds rate, which is what banks charge each other for overnight loans. It currently sits in a range of [3.50% to 3.75%, held there at the July meeting](https://www.usbank.com/investing/financial-perspectives/market-news/federal-reserve-interest-rate.html). Nothing about that number is passed through to a 30-year mortgage. A 30-year fixed loan is priced off the 10-year Treasury yield, because that is roughly how long the average mortgage actually survives before the house is sold or the loan refinanced. Investors buy mortgage-backed securities instead of Treasuries, so they demand the Treasury yield plus a spread to compensate for the risk that borrowers repay early, which they tend to do at exactly the moment the investor least wants the money back. So the chain is: expectations about inflation and growth move the 10-year Treasury yield, the yield plus the spread sets mortgage-bond pricing, and lenders add their own costs on top. The Fed influences the first link. It does not control it, which is why mortgage rates have at times risen while the Fed was cutting. ## What moved this week Treasury Secretary Scott Bessent announced that the department would double its long-dated bond buybacks, from $2 billion to at least $4 billion per operation, [effective September 9](https://www.cnbc.com/2026/08/19/treasury-announces-upscaled-buyback-operation-for-longer-term-debt-sending-yields-lower.html). Buying back existing long bonds supports their prices and pulls yields down, and yields fell on the news, which is what fed through to this week's survey. The relief did not last the week. By Thursday the [10-year yield had climbed back four basis points to 4.69% and the 30-year to 5.24%](https://finance.yahoo.com/markets/live/stock-market-today-thursday-august-20-dow-sp-500-nasdaq-081139322.html). Freddie Mac's survey is collected across the week and reported with a lag, so a mid-week reversal shows up in the following week's number, not this one. ## Why rates are unlikely to fall far on their own Consumer prices were running at 3.5% a year in the June reading, above the Fed's 2% target. [Three members of the rate-setting committee dissented in July in favour of a quarter-point increase rather than a cut](https://www.usbank.com/investing/financial-perspectives/market-news/federal-reserve-interest-rate.html), and market pricing has moved towards the possibility of hikes rather than cuts before the year ends. Mortgage rates reflect that. The Treasury's buyback programme addresses how smoothly the bond market functions and who holds the long end; it does not address inflation, and it is not a substitute for the disinflation that would be needed to move mortgage rates meaningfully lower. For a household deciding what to do, the honest summary is that this week's move changes the monthly payment by the price of a sandwich, and that the range rates have traded in this year is far narrower than the swing in house prices in most local markets. Nothing here is advice on whether to buy, and no one can tell you where the 10-year yield goes next. ## Sources - [Primary Mortgage Market Survey](https://www.freddiemac.com/pmms) - [Treasury announces upscaled buyback operation for longer-term debt, sending yields lower](https://www.cnbc.com/2026/08/19/treasury-announces-upscaled-buyback-operation-for-longer-term-debt-sending-yields-lower.html) - [Federal Reserve holds rates at 3.50% to 3.75% in July 2026](https://www.usbank.com/investing/financial-perspectives/market-news/federal-reserve-interest-rate.html) - [Stock market today: Dow, S&P 500, Nasdaq slide as bond relief evaporates](https://finance.yahoo.com/markets/live/stock-market-today-thursday-august-20-dow-sp-500-nasdaq-081139322.html)