2024 401k Contribution Limits Catch Up Over 50. Contribution limits for a roth 401(k) are the same as for a traditional 401(k). Of note, the 2024 pretax limit that applies to elective deferrals to irc section 401(k), 403(b) and 457(b) plans increased from $22,500 to $23,000.

Here’s what you need to know for 2024: The limit on employer and employee contributions is $69,000.