PCE Price Index
The PCE Price Index is the Federal Reserve's preferred inflation gauge, measuring price changes across goods and services consumed by U.S. households and published monthly by the Bureau of Economic Analysis.
The Personal Consumption Expenditures (PCE) Price Index is produced by the Bureau of Economic Analysis (BEA) as part of the monthly Personal Income and Outlays report. While CPI and PCE both measure consumer inflation, the Fed has formally adopted the PCE index — specifically the core PCE, which excludes food and energy — as its primary benchmark since 2000, with an explicit long-run target of 2% annual growth.
Several methodological differences explain why the Fed prefers PCE over CPI. First, the PCE index uses a chain-weighted formula that automatically adjusts for substitution effects — when one good becomes relatively expensive, consumers shift to cheaper alternatives, and PCE captures this behavioral change. CPI uses a fixed basket that is updated less frequently and thus can overstate inflation by assuming consumers keep buying expensive items regardless of price. Second, the PCE index covers a broader population, including purchases made on behalf of households by employers and government programs such as Medicare and Medicaid. Third, the PCE index tends to assign a lower weight to shelter costs, making it somewhat less sensitive to the rental cycle dynamics that affect core CPI.
The BEA releases PCE data with roughly a one-month lag. Revisions are common and can be substantial, as the underlying source data is refined over time. Markets watch the monthly PCE readings carefully, especially the core PCE year-over-year change, which is the single number most closely associated with the Fed's stated inflation target.
When core PCE runs persistently above 2%, the Federal Open Market Committee (FOMC) typically signals a bias toward raising the federal funds rate. When core PCE falls below 2% for an extended period, the FOMC may lean toward cutting rates or deploying unconventional tools such as quantitative easing. The spread between core CPI and core PCE — often called the CPI-PCE wedge — itself becomes a subject of analysis during periods of unusual inflation dynamics.
For equity investors, PCE data directly influences Federal Reserve policy expectations, which in turn affect interest rates, discount rates for equity valuations, the strength of the dollar, and borrowing costs across the economy. A surprise PCE reading can move financial markets significantly on release day.