Social Security and Supplemental Security Income (SSI) benefits for approximately 70 million Americans increased by 8.7% in 2023. The increase began with benefits payable to more than 65 million Social Security beneficiaries in January 2023, and increased payments to more than 7 million SSI beneficiaries began on December 30, 2022. The COLA notices were mailed throughout the entire month of December, but they were also available online in early December to most beneficiaries through the Message Center of their personal my Social Security account if they created their account by November 15, 2022.