Social Security Cost Living Adjustment 2024. Social security benefits will increase by 2.5 percent beginning with the december 2024 benefits, which are. Due to inflation, the cola is rising this year, so the 66.

Since 1975, social security’s general benefit increases have been based on increases in the cost of living, as measured by the consumer price index. This is significantly lower than the 2023 adjustment of 8.7%.