Data Source Change Lowers Inflation Index

The U.S. Bureau of Economic Analysis (BEA) altered its data source for legal services prices in January, resulting in a lower-than-expected reading for a key inflation metric. This change, implemented without public disclosure, impacted the core Personal Consumption Expenditures (PCE) price index, which the Federal Reserve uses for monetary policy decisions.

Specifically, the BEA, part of the Commerce Department, shifted from using consumer price data to wholesale price data from the Bureau of Labor Statistics (BLS) for legal services. This adjustment, affecting a category representing less than 1% of overall consumer spending, reduced the monthly change in the core PCE index by approximately 0.1 percentage point. Economists noted this divergence after their forecasts for legal services inflation, which anticipated double-digit gains based on consumer price index (CPI) data, proved inaccurate.

The BEA stated it did not change its methodology but acknowledged a "one-off" data source switch. This decision was prompted by volatility and inconsistent data collection in the BLS's CPI for legal services. While the change itself might be justifiable due to data quality issues, the lack of prior announcement has raised concerns among economists regarding transparency and the independence of statistical agencies.