Max Roth 401k Contribution 2024 Over 55. Employees can contribute up to $23,500 to their 401 (k) plan for 2025 vs. This amount is an increase of $500.

Savers will be able to contribute as much as $23,500 to a 401(k) in 2025, up from $23,000 in 2024. 401(k) contribution limits in 2024 and 2025.