2024 Roth 401k Catch Up Contribution Limits. If you're trying to catch up on retirement savings, the high contribution limits make it possible. The 2024 contribution limit for 401(k) plans is $23,000, up from $22,500 in 2023.

If you have access to a roth 401 (k) and a traditional 401 (k), you can contribute up to the annual maximum across both. 401(k) (other than a simple 401(k)).