Overview
- Independent forecasters have tightened estimates for the 2027 cost-of-living adjustment to roughly 3.4%–3.6%, with AARP at about 3.5%, the Senior Citizens League at 3.6%, and analyst Mary Johnson near 3.4%.
- By law the Social Security Administration will compute the official COLA from the average change in the CPI‑W for July, August and September and announce the result in mid-October.
- A headline COLA raise does not guarantee larger monthly spending for retirees because rising Medicare Part B premiums and other deductions can offset much of the increase.
- More than 71 million traditional Social Security beneficiaries stand to be affected, and examples show a 3.5% COLA would add roughly $35 per $1,000 in monthly benefits before any premium deductions.
- Debate over the CPI‑W measure centers on whether it understates seniors' costs for health care and housing, and short-term moves in energy and supply shocks leave August and September inflation readings the decisive wild card.