Social Security's cost-of-living adjustment could rise 2.7%. But Medicare Part B premiums are set to rise even more, eating most of the COLA.

For millions of Social Security retirees in the U.S., the cost-of-living adjustment (COLA) is crucial for maintaining their purchasing power. However, a streak of high COLA increases isn't always beneficial.

Rising inflation and tariffs are pushing up 2026 Social Security COLA projections, but potential Medicare hikes and policy shifts could still strain low-income seniors.