2024 401k Contributions Limits Over 50. Limits for 401(k) plan contributions increased to $23,000 for 2024, with a limit of $30,500 for those age 50 and over. 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.

Use a free paycheck calculator to gain insights to your 401k and financial future. For example, suppose you had gross pay of $50,000 a year and got paid every two weeks.