10-Year U.S. Treasury Yield
The 10-year U.S. Treasury yield is the most closely watched interest rate in the world — and the primary benchmark that drives U.S. mortgage rates. Data is sourced daily from the Federal Reserve Bank of St. Louis (FRED).
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10-Yr Treasury (solid) vs. 30-Yr Fixed Mortgage (dashed) — sources: FRED / Freddie Mac PMMS
Why the 10-Year Treasury Matters for Mortgages
When you get a 30-year fixed mortgage, the lender is essentially lending you money for up to 30 years. But in practice, most mortgages are paid off or refinanced within 7–10 years. That makes the 10-year Treasury yield the natural benchmark — it roughly matches the average lifespan of a mortgage.
Lenders price 30-year mortgages at a spread above the 10-year Treasury. Historically, that spread has ranged from about 1.5 to 3 percentage points. When credit markets are stressed or prepayment risk is high, the spread widens. When conditions normalize, it narrows.
Example: if the 10-year Treasury yields 4.3 %, a healthy spread of 1.7 % puts the 30-year mortgage rate around 6.0 %. When the spread is elevated (as it was in 2023–24 at over 2.5 %), mortgage rates are higher than the Treasury alone would suggest.
This is why watching the Treasury yield gives you an early signal for where mortgage rates are heading — before lenders formally reprice their rate sheets.
What Moves the 10-Year Yield?
- Inflation expectations — higher expected inflation pushes yields up, since investors demand more return to offset purchasing power loss.
- Federal Reserve policy— the Fed doesn't directly set the 10-year yield, but its signals about future short-term rates heavily influence it.
- Economic growth outlook — strong growth → higher yields (more borrowing demand); recession fears → lower yields (flight to safety).
- Foreign demand for U.S. debt — large buyers like foreign central banks can suppress yields when they buy Treasuries in size.
Key Levels to Watch
- Below 4 %: historically favorable for mortgage rates — 30yr rates often approach the mid-5 % range
- 4–4.5 %: moderate — 30yr mortgages typically 6–6.5 %
- Above 4.5 %: upward pressure on mortgage rates above 6.5 %
See also: Current Mortgage Rates · Types of Mortgages Guide · 30-Year Fixed Rate Historical Chart