How Much Cola Expected 2025 Increase. That's slightly lower than july's prediction of 2.63% and the actual 2024 cola. A cola increase of 2.5% will raise the average monthly benefit by about $48 a month.

Us inflation rate data by ycharts. 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.