401k Contribution Limits 2024 Catch Up Total Revenue. For 2024 and 2025, you can contribute an additional $7,500 to traditional and roth 401 (k) accounts and $3,500 to a simple 401 (k). The total possible contribution allowed in a 401(k) plan is $34,750 for those aged 60 through 63 in 2025.

Workers over age 50 are permitted. Workers ages 50 and older have a higher annual 401 (k) contribution limit than their younger peers.