What is the Social Security 2100 Act, and would it actually change my COLA?

Seeing 'Social Security 2100 Act COLA' trending. What does this bill actually propose, and does it have a real chance of passing?

The Social Security 2100 Act (H.R. 9519), reintroduced by Rep. John Larson, is a sweeping reform bill that would, among other provisions: temporarily change how annual COLAs are calculated from 2027 through 2036 by comparing the current CPI-W index against a second index, the CPI-E (Consumer Price Index for the Elderly, which tracks spending patterns of people 62+), and using whichever produces the larger increase; raise the minimum benefit to 125% of the federal poverty line; add caregiver credits for unpaid caregivers; and extend the program's trust fund solvency by applying Social Security payroll tax to income above $400,000, which currently isn't taxed. It's been introduced in Congress multiple times since 2017 without ever reaching a floor vote, and this version faces the same long odds — GovTrack's own tracking gives it essentially no realistic chance of passing in the current closely divided Congress. It's worth knowing about as a sign of what reform proposals are on the table, but nothing in it is scheduled to take effect, and the standard annual COLA process (which delivered a 2.8% increase for 2026) continues unaffected in the meantime.