2024 Maximum 401k Contribution Limits Over 50. In 2024, the 401 (k) contribution limit for participants is increasing to $23,000, up from $22,500 in 2023. This number only includes personal contributions — employer matches.

In 2024, employers and employees together can contribute up to $69,000, up from a limit of $66,000 in 2023. This number only includes personal contributions — employer matches.