CPI or PCE? Different Baskets, Different Signals
The Consumer Price Index tracks out-of-pocket prices using a fixed basket, while PCE inflation uses broader, chain-weighted expenditures that better reflect substitution as consumers change habits. Policymakers often emphasize PCE for its scope, yet CPI resonates with everyday bills. Read both together, noting category weights, medical pricing methods, and services sensitivity. Divergences tell stories about behavior, coverage differences, and evolving spending patterns that matter for rate decisions.