2024 Contribution Limits 401k Catch Up Limit. Those 50 and older can contribute an additional $7,500. Contribution limits for a roth 401(k) are the same as for a traditional 401(k).

401(k), 403(b) and 457 elective deferral limit: The 401(k) contribution limit for 2024 is $23,000 for employee contributions, and $69,000 for the combined employee and employer contributions.