401k Limits 2025 Catch Up Age. This amount is an increase of. The most a person under age 50 can contribute to a solo 401(k) is $69,000 for 2025 (up from $66,000 in 2023).
This means that your total 401 (k) contribution limit for 2025 is $30,500. Total 401(k) plan contributions by an employee and an employer cannot exceed $69,000 in 2025.
