How Much Inflation Has the Market Priced In? Understanding Breakeven Inflation

US July CPI is about to be released, but the bond market prices future inflation every day. One way to observe that judgment is the ten-year breakeven inflation rate, or BEI, available on FRED as T10YIE.

How is 2.29% calculated?

Subtract the yield on inflation-protected Treasury securities, or TIPS, from the nominal Treasury yield at the same maturity. The verified figures for August 10 are: approximately 4.72% for the ten-year nominal Treasury series DGS10 and 2.43% for ten-year TIPS, DFII10. The difference is approximately 2.29%.

This helps us interpret market pricing of average inflation over the next ten years. However, the spread also includes inflation-risk and liquidity effects. It is not a pure or precise forecast.

BEI and CPI cover different periods

June CPI inflation of 3.5% describes consumer-price changes over the previous twelve months. A 2.29% breakeven describes market pricing over the next ten years. One records what has happened; the other reflects a judgment about the future.

A monthly CPI reading above 2.29% therefore does not show that the bond market's forecast was wrong. A reading below it does not prove that the market overestimated inflation. The time horizons need to be aligned before drawing such conclusions.

Where does 2.29% sit historically?

The original article reported a ten-year average of 2.07% and a current reading around the 62nd percentile. Its historical minimum was 0.04% in late 2008 and its maximum was 3.02%, with readings mainly between 2.0% and 2.6% in recent years. Although 2.29% is above the Fed's 2% target, that alone does not mean inflation expectations have become unanchored.

What matters after the CPI release?

Alongside the current price reading, watch whether BEI changes persistently. If it rises substantially, the next question is whether the market has raised its inflation expectations or whether risk compensation and liquidity have changed. The original article used 2.6% as a reference point in the author's monitoring framework, not an official warning threshold.

Understanding BEI means distinguishing past inflation from future market pricing, then observing how both change.