Irs 2024 401 K Contribution Limit. 2024 401 (k) contribution limits. In 2022, the most you can contribute to a roth 401(k) and contribute in pretax contributions to a traditional 401(k) is $20,500.
For 2024, employees may contribute up to $23,000. 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.