US Bureau of Economic Analysis Updates Inflation Calculation Method

The Bureau of Economic Analysis (BEA) implemented changes to its inflation calculation methodology in September 2026, affecting data dating back to January 2021. The core PCE index for September 30 came in at 3%, lower than the expected 3.3%, which contributed to Bitcoin rising above $84,000. The revisions include new approaches to measuring investment management services, legal services, and software costs, raising questions about the impact of these methodological shifts on future interest rate expectations.