2024 401k Max Contribution Catch Up. Those 50 and over can contribute an additional $3,500 for a maximum contribution of $19,500. Contribution limits for a roth 401(k) are the same as for a traditional 401(k).

For 2024, the maximum you can contribute from your paycheck to a 401 (k) is $23,000. 401(k) (other than a simple 401(k)) 403(b)