On October 29, 2026, Freddie Mac’s Primary Mortgage Market Survey put the 30-year fixed-rate mortgage at 7.24%, down from 7.32% the week before. That same day, the Federal Reserve’s H.15 release showed the 10-year Treasury constant-maturity yield at 4.98%. Subtract one from the other and you get roughly 226 basis points — a gap that gets called “the spread” in every market commentary that mentions it.
That number is real, and it is computed from two published series anyone can check. It is also not an input to your refinance decision. The spread describes the relationship between two averages measured on different populations and different clocks. Your break-even point is set by three numbers you can only get from your own paperwork: the all-in rate on a Loan Estimate, the closing costs on that same Loan Estimate, and how long you expect to keep the loan.
What the two published numbers actually measure
Freddie Mac’s PMMS is not a quote sheet. It is an average of mortgage rates collected from loan applications submitted to Freddie Mac through its Loan Product Advisor system by lenders across the country. The criteria are specific: weekly conventional, single-family originations with conforming loan limits as set by FHFA. The survey is published weekly on Thursdays at noon ET and covers applications from the prior Thursday through Wednesday. The 7.24% figure is an average of what conforming purchase borrowers applied for during that window — not what any lender would offer you today on a refinance.
The H.15 10-year yield is a different animal entirely. It is a constant-maturity yield, which the U.S. Treasury interpolates from the daily yield curve for non-inflation-indexed Treasury securities. The Fed posts the release Monday through Friday at 4:15pm and does not post it on holidays or when the Board is closed. The 4.98% reading is a single day’s closing-market composite, not a weekly average.
So the spread compares a weekly average of conforming purchase applications to a single day’s interpolated Treasury yield. The two series are not measured on the same day, the same population, or the same instrument. Treating their difference as a precise signal overstates what the data can support.
Why a wider spread doesn’t tell you whether to refinance
When the gap between the PMMS average and the 10-year yield widens, the usual explanation is that mortgage-backed securities investors are demanding more compensation relative to Treasuries. That is a market-level story about the pricing of conforming loans in aggregate. It says nothing about the rate a specific lender will quote a specific borrower on a specific day, because that rate depends on credit score, loan size, occupancy, points paid, and the lender’s own pricing sheet.
Two households can face the same spread and get quotes 75 basis points apart. The spread is the same for both. Their break-evens are not.
The other problem is timing. PMMS is a weekly average of applications that closed during a Thursday-to-Wednesday window. H.15 is a daily snapshot posted at 4:15pm. If you compute the spread on a Thursday afternoon, you are comparing a number that reflects activity through the prior Wednesday night to a yield that moved at 4:15pm that day. The measurement lag alone can make the spread look wider or narrower than the underlying pricing relationship at any given moment.
The break-even arithmetic that actually matters
Refinance break-even is a division problem. Take the monthly payment reduction, multiply by the number of months you expect to hold the loan, and compare that product to the closing costs you pay at settlement. The break-even month is closing costs divided by monthly savings.
Here is a labeled hypothetical, not a prediction or a claim about current market conditions. Suppose a household’s current principal-and-interest payment is $2,150 and a refinance quote produces a new payment of $2,000 — a $150 monthly reduction. If closing costs on the Loan Estimate total $4,500, break-even is 30 months ($4,500 ÷ $150). If the same rate comes with $6,000 in closing costs, break-even is 40 months. Same rate, same payment reduction, different break-even, because the cost side of the equation changed.
Those numbers are illustrative. The inputs must come from your own documents. The rate and the closing costs have to come from the same Loan Estimate, because a lower rate with higher fees can produce a longer break-even than a higher rate with lower fees. Comparing a rate from one lender to closing costs from another tells you nothing useful.
Where the real inputs live
The Loan Estimate is the document that carries both numbers on the same page: the interest rate and the estimated closing costs. The Closing Disclosure carries the final versions of both. If you are shopping, request a Loan Estimate from each lender and compare the rate and the total closing costs side by side, on the same document, for the same loan amount and term.
Your current mortgage statement supplies the other half of the comparison: the existing principal-and-interest payment and the remaining balance. The difference between that payment and the new one is your monthly savings. The closing costs on the Loan Estimate are your upfront cost. Divide one by the other and you have your break-even in months.
If you are also carrying credit card balances, the rate environment affects those through a different channel — card issuers reprice off the prime rate, not the 10-year Treasury. The mechanics of that transmission are covered in What a Rate Hold Actually Means for Credit Card Borrowers.
A short checklist
- Request a Loan Estimate from at least two lenders for the same loan amount and term.
- Compare the interest rate and the total closing costs on the same document, not across documents.
- Subtract the new principal-and-interest payment from your current one to get monthly savings.
- Divide total closing costs by monthly savings to get break-even in months.
- Compare that break-even to how long you actually expect to keep the loan. If you plan to move or pay off early, the break-even may never be reached.
The spread between the PMMS average and the 10-year yield is a useful way to understand what is happening in the mortgage market as a whole. It is not a number that appears on any document you will sign. The numbers that determine whether refinancing pays for you are on the Loan Estimate, and they are specific to your loan, your lender, and your closing date.
Frequently asked questions
Does a wider mortgage–Treasury spread mean mortgage rates are rising?
Not necessarily. The spread is the difference between two rates. It can widen because mortgage rates rose, because Treasury yields fell, or both. The PMMS 30-year average was 7.24% on October 29, 2026, down from 7.32% the prior week, while the 10-year yield was 4.98% that day. A single week’s data does not establish a trend in either direction.
Why is the PMMS rate different from what my lender quotes?
PMMS is an average of conforming, conventional, single-family purchase applications submitted through Freddie Mac’s Loan Product Advisor system. It excludes refinances, non-conforming loans, and any borrower-specific pricing adjustments. Your lender’s quote reflects your credit profile, loan size, occupancy, and points, priced on the day you lock.
How often do the two published series update?
PMMS publishes weekly on Thursdays at noon ET, covering applications from the prior Thursday through Wednesday. The H.15 release posts daily Monday through Friday at 4:15pm, except on holidays or when the Board is closed. The two series are never measured on the same clock.
Should I wait for the spread to narrow before refinancing?
The spread is not a refinance trigger. Your break-even depends on the rate and closing costs on your Loan Estimate and your expected holding period. If the break-even is shorter than the time you plan to keep the loan, the spread’s current level does not change that arithmetic.
