Maximum 401k Contribution With Catch Up 2024 Pdf. For individuals under age 50, the maximum contribution to 401 (k), 403 (b), and 457 (b) plans increased to $23,000. The internal revenue service sets the maximum amount you and your employer can contribute to your 401 (k), and that number increases in 2024.

That’s $23,000 for some and $30,500 for others. The internal revenue service sets the maximum amount you and your employer can contribute to your 401 (k), and that number increases in 2024.