Roth 401k Contribution Limits 2024 Irs. The 2024 contribution limit for 401(k) plans is $23,000, up from $22,500 in 2023. In 2023, the most you can contribute to a roth 401 (k) and contribute in pretax contributions to a traditional 401 (k) is $22,500.

Remember, the contribution limit counts toward roth and traditional 401 (k) plans. For 2023, the roth 401 (k) contribution limit is $22,500.