2025 401k Catch Up Contribution Limit. Employees can contribute up to $23,000 to their 401 (k) plan for 2025 vs. Employees age 50 or older may contribute up to an additional $7,500.

Employees age 50 or older may contribute up to an additional $7,500. Workers ages 50 and older can make an additional annual contribution to their 401(k) plan, over and above the standard $20,500.