The mismatch stems from the way COLAs are calculated. Currently, the SSA bases annual increases on the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W), a measure designed around the spending habits of younger, urban workers. An alternative measure, the Consumer Price Index for the Elderly (CPI-E) weights housing, health care and utilities more heavily and would have produced a 3.1% increase in 2026 instead of 2.8%, according to Investopedia.