401k 2024 Tax Year Limits 2024. 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. For the tax year 2024, the maximum amount that an employee can contribute to their 401(k) retirement plan is $23,000.

Most people don’t max out their 401(k). The irs increased 2024 contribution limits for 401(k)s, 403(b)s, and iras.