2024 Max 401k Contribution Limits. 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. That's an increase from the 2023 limit of $330,000.
If you’re 50 or older, you can stash an additional $7,500 in your 401 (k). For 2024, the 401(k) annual contribution limit is $23,000, up from $22,500 in 2023.