Freddie Mac Says 6.71%. Whose Mortgage Rate Is That?

Buyers send me the weekly rate number the day it comes out and ask why their lender quoted them something else. Usually neither number is wrong. The weekly average describes one specific borrower, and it may not be the person reading it.

What the number is

Freddie Mac’s Primary Mortgage Market Survey put the 30-year fixed-rate mortgage at 6.71% in the Sep 3, 2026 release, and the 15-year fixed at 6.04%. Since the methodology changed, the PMMS is no longer a poll of lenders. It is built from loan application information submitted to Freddie Mac’s automated underwriting system, Loan Product Advisor.

Whose rate it is

Freddie Mac limits the selection to conventional, conforming, fully amortizing home purchase loans for borrowers who put 20% down and have excellent credit. Freddie Mac counts a single family loan as one on a property with one to four residential units, then narrows the selection further to a single-unit property. The rest of the published criteria are just as specific: owner occupied, conventional, a 30-year or 15-year fixed rate, an origination loan-to-value between 75 and 80, an origination credit score of 740 or above, and a loan amount inside the national conforming limits. Refinances are out, since only purchase applications are collected. Jumbo loans exceed the conforming limit, so they never make it in either, and the owner occupied requirement rules out investment property and second homes.

Two limits Freddie Mac states out loud

First, the rate is measured at the application stage. Freddie Mac writes that the reported rate does not represent the rate at the time of loan origination, and that not all applications will necessarily be approved and result in originated loans. The application data, it adds, is neither a pledge by the applicant nor a commitment by the lender. Second, the survey no longer reports average discount points and origination fees for the 30-year and the 15-year, because the application system doesn’t capture them. So the published rate tells you nothing about what a borrower paid up front to get it.

Where the week sits

The 30-year average was 6.66% last week and 6.50% a year ago. The 15-year was 5.98% last week and 5.60% a year ago. Week to week the number moves in hundredths of a point, which is noise if you’re deciding whether to buy. Compare against a year ago and the move is visible.

What to do with it

Use the weekly average as a market thermometer. If your credit sits below 740, or you’re putting less than 20% down, or you’re buying a two family to live in one side of, your price will be set by your own file. Ask a lender to price your actual scenario, and ask what the rate would be with and without points, since the survey no longer answers that.

Buying in Greater Boston this fall and trying to read the rate news? Send me your timeline and I’ll walk you through what actually moves your number. Diana Kim, REALTOR®, eXp Realty.