PCE Price Index

The PCE and CPI gauges disagree partly because they are built from different raw data. CPI comes from a household survey — the BLS asks what consumers paid out of pocket. PCE is assembled mostly from the business side: retail sales, company reports and administrative records compiled inside the national accounts. That sourcing is why PCE captures spending made on a consumer's behalf — an employer's share of health premiums, or care billed to Medicare — that never appears on a household receipt. It also means PCE is revised as fuller data arrives, whereas a CPI print, once published, essentially stands.

Stripping out food and energy gives Core PCE, the Fed's main focus. But that blanket exclusion can itself distort a single month — energy is not always the outlier. The Dallas Fed therefore publishes the Trimmed Mean PCE, which each month discards whichever categories moved most in either direction and averages the rest. Because the trimmed set changes from month to month, it often gives a steadier read on underlying inflation than Core PCE, and policymakers watch the two together. The increasingly cited 'supercore' cut — core services excluding housing — follows the same logic, isolating wage-driven price pressure.

The price index is only one line of the monthly Personal Income and Outlays report. The same release reports personal income and the personal saving rate — the share of after-tax income households keep rather than spend. Together they answer a question the inflation figure alone cannot: are people funding their purchases from rising income, or by drawing down savings and leaning on credit? A saving rate sliding while spending stays strong can flag demand that will not last, so economists read income, saving and prices as one package.

The spending aggregate behind the price index is the same personal consumption that makes up about two-thirds of US GDP — the economy's largest single engine, the C in the C + I + G + NX identity. Its inflation-adjusted growth is a front-line activity gauge in its own right, and it splits into three parts: durable goods (cars, appliances), nondurable goods (food, fuel, clothing) and services (housing, healthcare, travel), with services now roughly two-thirds of the total. When commentators say the US consumer is resilient, it is a strong month of real PCE they are pointing to.