10Y Breakeven Inflation

What Is Breakeven Inflation?

The breakeven inflation rate is the difference between the yield on a nominal Treasury bond and the yield on a TIPS (Treasury Inflation-Protected Security) of the same maturity. It represents the average annual inflation rate that would make a TIPS investor and a nominal bond investor earn the same total return over the period.

If the 10-year nominal Treasury yields 4.5% and the 10-year TIPS yields 2.0%, the 10-year breakeven is 2.5% — the market expects 2.5% average annual inflation over the next decade.

Why It Matters

Breakeven inflation is one of the most important real-time gauges of inflation expectations in existence. Unlike survey-based measures, it reflects actual money being put at risk by sophisticated bond market participants. The Fed watches it closely as part of its assessment of whether inflation expectations are "anchored."

The Fed's 2% Target

The Fed targets 2% PCE inflation. If 5-year or 10-year breakevens move persistently above 2.5%, it signals the market believes the Fed is losing its inflation-fighting credibility — a major warning sign that would likely force more aggressive tightening. Conversely, breakevens below 1.5% signal deflation fears.

Breakevens vs Realized Inflation

Breakevens are forward-looking expectations, not a prediction of actual inflation. They can diverge significantly from realized CPI/PCE depending on supply shocks, energy price moves, and other factors outside monetary control.

The Liquidity Premium Distortion

TIPS are less liquid than nominal Treasuries, meaning their yields carry a liquidity premium. This means breakevens slightly overstate true inflation expectations. Economists typically adjust for a 20–30 bps liquidity premium.