What’s Really Driving up Treasury Yields?

treasury-yields



Yields on 10-year Treasuries have risen this year after opening near their historical average of about 4%. With core inflation still elevated but holding relatively steady, a rise in real interest rates may be to blame for the increase in Treasury yields.

2026 began with 10-year Treasuries right around 4%, which many viewed as a comfortable place. The comfort came from some simple math—2 plus 2 equals 4. The long-term real yield on the 10-year Treasury was around 2% and the Fed’s inflation target is 2%.

Now, the 10-year Treasury yield is approaching 5%. Why is that?

See more: Treasury Yields Snapshot: August 28, 2026

It’s tempting to blame oil prices and inflation, but the numbers appear to tell a different story. Core CPI sat at 2.6% at the end of 2025, and the latest reading came in at 2.5%.[1] That means the increase in the 10-year Treasury yield must have been driven by an increase in the real yield, rather than accelerating price increases.

Chart of the Month

10-Year Real Treasury Yield: Historical Averages

For Treasuries, using long-term averages as a benchmark can be misleading. The average real yield for the 10-year Treasury has been approximately 2%, as you can see from the historical average charted above. But that includes a range of distinct cycles, including the Quantitative Easing period from the Great Financial Crisis through Covid, when the government’s purchasing of long-term bonds to suppress longer-term interest rates did its job by keeping real interest rates near zero.