Maximum Roth 401k Contribution 2024 Over 55. $19,500 in 2020 and 2021; The 401k/403b/457/tsp contribution limit is $23,000 in 2024.

The 2025 401(k) contribution limit is $23,500, up from $23,000 in 2024. Starting in 2025, older workers can save even more for retirement via 401(k).