What is mortgage rate spread?
Rate spread has two related meanings. In HMDA data it is the gap between a loan's APR and the average prime offer rate (APOR) for a comparable loan — a measure of how much pricier a loan is than the market norm; loans above set thresholds are flagged as higher-priced mortgage loans. More broadly, "the spread" is the cushion lenders add on top of the 10-year Treasury yield, which is the main driver of where fixed mortgage rates sit. With the 30-year fixed near 6.47% (as of June 18, 2026), that spread over Treasuries has been wider than its long-run norm.
Source: HMDA Data Browser (FFIEC / CFPB). Data as of June 2026.
The two spreads
| Term | What it compares | Why it matters |
|---|---|---|
| HMDA rate spread | A loan's APR vs the APOR benchmark | Flags higher-priced loans with extra protections |
| Primary–secondary / Treasury spread | Mortgage rate vs the 10-year Treasury yield | Explains why rates rise even when the Fed is on hold |
Why fixed rates track the 10-year Treasury
A 30-year fixed mortgage is, to investors, a long-dated bond that can be paid off early. So its rate is anchored to long-term government yields plus a spread for credit, servicing and prepayment risk. That's why the headline Freddie Mac PMMS rate can climb while the Fed holds the short-term rate steady — the bond market, not the Fed, sets the base. See the current rates page for the latest 30- and 15-year averages and context.
Frequently asked questions
What is rate spread in mortgage data?
In HMDA, rate spread is the difference between a loan's annual percentage rate (APR) and a published average prime offer rate (APOR) for a comparable loan. It's a measure of how much more expensive a loan is than the going rate. Loans above set thresholds are flagged as 'higher-priced mortgage loans' and carry extra consumer protections.
Why do mortgage rates move?
Fixed mortgage rates track the 10-year US Treasury yield plus a spread that lenders and investors add for risk and profit. When the spread widens — during market stress or high prepayment uncertainty — mortgage rates rise relative to Treasuries even if the Fed hasn't moved.
Does the Federal Reserve set mortgage rates?
Not directly. The Fed sets the short-term federal funds rate. Thirty-year mortgages price off longer-term bonds, so they respond to expectations about inflation and growth more than to any single Fed meeting.
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Last updated: 2026-06-20