2024 401k Contribution Limits Irs. The 2024 contribution limits for 401(k), 403(b), and most 457 plans have been raised, increasing by $500 the amount plan participants can contribute. 401k and retirement plan limits for the tax year 2024.
For those with a 401 (k), 403 (b), or 457 plan through an employer, your new maximum contribution limit will go up to $23,000 in 2024. The 401(k) contribution limit for 2024 is $23,000.