401k Contribution Limits 2024 After Tax Return. 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.  — in 2024, employees can contribute up to $23,000 to their plans.

Employee’s withholding certificate form 941; See the limits for traditional 401(k)s, roth 401(k)s, employer contributions, and profit sharing.