Maximum 401k Contribution 2024 With Catch Up 2024. Employees can invest more money into 401(k) plans in 2024, with contribution limits increasing from 2023’s $22,500 to $23,000 for 2024. For those with a 401(k), 403(b), or 457 plan through an employer, your new maximum contribution limit.

All new limits will go into effect. The limit on employer and employee contributions is $69,000.