Will 401k Limits Increase In 2024. The income limits for social security's retirement earnings test increased. These limits increase to $69,000 and $76,500, respectively, in 2024.
Employees can contribute up to $23,000 to their 401 (k) plan for 2024 vs. For 2024, the 401 (k) contribution limit for employees is $23,000, or $30,500 if you are age 50 or older.