Breakeven inflation rate

The breakeven inflation rate is derived from a simple arbitrage relationship. A nominal government bond promises a fixed dollar (or pound, or euro) return. An inflation-linked bond promises a return in real terms — its principal adjusts with CPI, so the investor is protected against inflation. The yield difference between the two is what the market "breaks even" on: if future inflation equals the breakeven rate, the two bonds deliver the same return. If inflation comes in higher than the breakeven, the inflation-linked bond wins; lower, the nominal bond wins.

In the US, the TIPS (Treasury Inflation-Protected Securities) market provides the inflation-linked benchmark. The 10-year TIPS breakeven is: 10-year nominal Treasury yield minus 10-year TIPS yield. On FRED, this is published as T10YIE and updated daily.

Breakeven inflation rates are the most widely watched real-time gauge of inflation expectations in financial markets. When the 10-year TIPS breakeven rises, markets are pricing in more inflation over the next decade — either because they expect actual CPI to be higher, or because they demand a higher inflation risk premium for holding nominal bonds. Central banks watch breakevens precisely because they signal whether the market believes the bank's 2% inflation target is credible.

However, breakevens are not pure inflation forecasts — they contain a liquidity premium (TIPS are less liquid than nominal Treasuries, requiring a yield compensation) and an inflation risk premium (investors may demand extra yield to protect against unexpected inflation volatility). This means the breakeven typically overstates the pure inflation expectation by 0.1–0.3 percentage points. The Federal Reserve Bank of Cleveland produces a model-adjusted estimate — the Cleveland Fed inflation expectations — that strips out these premia.

Beyond the simple 10-year breakeven, market participants use forward breakeven rates — the implied inflation rate for a specific future period. The most closely watched is the 5-year/5-year forward breakeven (5y5y): the expected average inflation from 5 years to 10 years from now. This strips out near-term cyclical inflation noise and reflects the market's view of longer-run inflation — the steady state that matters most for whether a central bank has truly anchored expectations.

The Federal Reserve publishes the 5y5y breakeven in its H.15 release. The ECB has an equivalent for the euro area. During the 2021–23 inflation surge, the 5y5y breakeven rose only modestly (to about 2.4%) — one of the key reasons the Fed believed it could tame inflation without dramatically overtightening. By contrast, in the 1970s, forward expectations became fully unanchored, requiring the Volcker shock to reset them. Our inflation expectations term covers the full expectations measurement toolkit.