Estimated Cola For 2025 Calculator. A 2.5 percent cola would increase the average benefit for a retired worker — about $1,920 a month in august 2024 — by $48 a month starting in january 2025. See the north state bank's calculator to.

But odds are good that the cola will rise before the government announces it in october. Beginning in january, benefits will increase by 2.5%, or a little less than $50 a month for the average retiree.