2024 401k Max Catch Upc. For those with a 401(k), 403(b), or 457 plan through an employer, your new maximum contribution limit will go up to. 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.
Older workers can defer paying income tax on as much as $30,500 in a 401(k) plan. Workplace retirement plan contribution limits for 2024.