Why Your COLA Won't Match the Inflation Headline, and How It's Really Calculated
The inflation headline hit 4.2% in May, and the 2027 COLA is tracking 3.4 to 3.5%. The COLA uses a different index, reads only July to September, and rounds to a tenth. The full formula step by step, checked against the index values in SSA's own notices, plus what September has to do for 3.5%.