2024 401k Maximum Deferral. Most people don't max out their 401 (k). The maximum contribution amount, on the other hand,.

 — the roth 401 (k) contribution limit for 2024 is $23,000 for employee contributions and $69,000 total for both employee and employer contributions.  — maximum contributions individuals can contribute up to $23,000 total into their traditional or roth 401 (k) plans in 2024, no matter how high their income is that year.