2024 401k Limits Catch Up. 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. With a solo 401 (k), you can contribute up to $69,000 for 2024 (up from $66,000 in 2023) or 25% of your.

Those 50 and older can contribute an additional. Total 401(k) plan contributions by an employee and an employer cannot exceed $69,000 in 2024.