401k Contribution Limits 2024 Over 50. 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. The 2025 401(k) contribution limit increased to $23,500, up from $23,000 in 2024.
Employees age 50 and older can contribute an additional $7,500 for a total of $31,000. Those numbers will stay the same.