2024 401k Maximum Contribution Limits Irs. 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. Most people don't max out.

The 401 (k) contribution limit is $23,000. The basic employee contribution limit for 2024 is $23,000 ($22,500 for 2023).