Maximum 401k Contribution 2024 Over 55 Years. Employees 50 or older can contribute up to $30,500 with catch. The total maximum allowable contribution to a defined contribution plan (including both employee and employer contributions) is expected to rise by $2,000.

Employees 50 or older can contribute up to $30,500 with catch. The basic employee contribution limit for 2024 is $23,000 ($22,500 for 2023).