2024 401k Max Contribution. 2024 retirement account contribution amounts. The contribution limit for 401(k)s, 403(b)s, most 457 plans and the federal government's thrift savings plan is $23,000 for 2024, up from $22,500 in 2023.
401 (k) contribution limits in 2023 and 2024. The contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you’re 50 or older).