401k 2024 Limit Contribution. In 2024, the contribution limit for a roth 401 (k) is $23,000, plus an additional contribution of $7,500 if you are age 50 or older. You can invest up to $23,000 in 401 (k) plans in 2024, and anyone age 50 or older can put in an extra $7,500 as a “catch.

Total 401 (k) plan contributions by an employee and an employer cannot exceed $69,000 in 2024. The 401 (k) contribution limit for 2024 is $23,000.