5-Year Breakeven Inflation vs Core CPI
The 5-year breakeven inflation rate (T5YIE on FRED) closed April 2026 at 2.58%, while Core CPI (CPILFESL) printed 2.6% year-over-year for March 2026 in the BLS release dated April 10. The two are within 2 basis points of each other, the tightest convergence since the 2018 to 2019 pre-pandemic equilibrium.
Also known as: 5Y Breakeven Inflation (5Y breakeven, 5Y inflation expectations) · Core CPI (ex Food/Energy) (core CPI, core inflation)
Why This Comparison Matters
The 5-year breakeven inflation rate (T5YIE on FRED) closed April 2026 at 2.58%, while Core CPI (CPILFESL) printed 2.6% year-over-year for March 2026 in the BLS release dated April 10. The two are within 2 basis points of each other, the tightest convergence since the 2018 to 2019 pre-pandemic equilibrium. When breakevens trade at or near current Core CPI, the market is signaling that the FOMC has reached the credibility threshold where five-year-average inflation expectations match the prevailing realized rate, neither requiring further restrictive policy nor pricing an imminent disinflationary shock. The 2.58% versus 2.6% configuration is the cleanest signal that markets believe the inflation regime is stabilizing within reach of the Fed's 2% target, even if the last 60 basis points of disinflation remain unfinished business.
What 5Y breakeven and Core CPI measure and how they map to each other
The 5-Year Breakeven Inflation Rate (FRED series T5YIE) is calculated daily as the yield spread between the 5-year nominal Treasury (DGS5) and the 5-year TIPS yield (DFII5). It represents the average annual CPI inflation that would equate the after-inflation return on the two instruments over the next five years, plus a small inflation risk premium that academic estimates place at approximately 30 to 50 basis points. As of April 30, 2026 the rate is 2.58%, in the moderate range relative to its post-2003 history (record high 3.59% in March 2022, record low negative 2.24% in November 2008).
Core CPI (CPILFESL on FRED, published by BLS) is the Consumer Price Index for All Urban Consumers excluding food and energy, the realized inflation measure most often cited as the underlying rate. The March 2026 print released April 10 was 2.6% year-over-year, with shelter at 3.0% and core services ex-shelter running roughly 3.4%. Note the unit mismatch: breakevens are TIPS-implied headline CPI expectations, not core CPI expectations. The breakeven-versus-core-CPI spread therefore embeds an implicit assumption that food and energy inflation will revert to historical averages, which usually adds 20 to 40 basis points to headline relative to core.
The April 2026 configuration: 2bp gap, the tightest since 2019
The April 2026 reading of breakevens at 2.58% versus Core CPI at 2.6% produces a spread of approximately negative 2 basis points, the tightest convergence between the two series since June 2019 when breakevens at 1.71% sat almost exactly on top of Core CPI at 2.0%. The intervening five-year window saw the spread blow out repeatedly: breakevens fell to 0.18% in March 2020 against Core CPI at 2.1%, then rallied above 3.5% in March 2022 against Core CPI at 6.5%, then compressed steadily as the disinflation took hold.
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Frequently Asked Questions
What is the current 5-year breakeven versus Core CPI?+
The 5-year breakeven inflation rate closed April 2026 at 2.58%, while Core CPI for March 2026 (released April 10) printed 2.6% year-over-year. The 2 basis point gap is the tightest convergence since June 2019 and signals that markets believe the inflation regime is stabilizing within reach of the Fed's 2% target, even though the disinflation is incomplete.
Why does breakeven sometimes trade below Core CPI?+
Breakevens price the average annual CPI over the next five years, not the current rate. When markets expect ongoing disinflation through Fed tightening or base effects, breakevens trade below current Core CPI. The 2022 to 2024 episode produced this pattern with breakevens falling from 3.59% to 2.10% even as Core CPI remained above 4%.
How accurate are breakevens as inflation forecasts?+
Breakevens were too low during 2008 to 2010 (predicting deflation that never materialized), close but slightly low during 2021 to 2023 (peaking at 3.59% while realized inflation averaged higher), and roughly accurate during 2017 to 2019. The cleanest use is as a regime indicator and credibility signal rather than a point forecast, because TIPS markets incorporate macro information quickly but embed liquidity and risk premium distortions.
What does the breakeven-Core CPI spread signal about Fed credibility?+
When breakevens decline alongside the Fed's reaction function during a hiking cycle, the central bank's credibility is intact. The 2022 to 2024 hiking cycle is the cleanest test: breakevens fell from 3.59% to 2.10% as the Fed hiked 525 basis points, even with Core CPI remaining elevated. The September 2024 Fed dot plot pivot explicitly referenced this expectation reanchoring. The current 2.58% reading suggests credibility remains intact.
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