The core PCE price index in the US, which is the Federal Reserve's preferred gauge of underlying inflation in the US economy, rose by 0.4% from the previous month in December of 2025. The rise surpassed market expectations of a softer 0.3% increase to reflect the sharpest increase since February, in line with the FOMC's warning that the disinflation process is slower than previously expected. From the previous year, the core PCE price index rose by 3%.