Cola 2024 Estimate. The cola for december 2023 is 3.2 percent and is first payable in january 2024. Starting in january, the estimated average monthly retirement benefit will increase by 3.2%, or $59 a month, for 2024 — from $1,848 to $1,907.

A 2.5% cola would add about $23 per month, bringing the new average to somewhere around $933 per. In 2024, seniors got a 3.2% cola, and in 2022 and 2023, colas were 5.9% and 8.7%, respectively.