2024 401k Maximum Contribution Limits. The base 2024 maximum 401k contribution limit for employees is $23,000 (+$500 versus 2023). — the 401 (k) contribution limit is the maximum amount an individual can contribute to their 401 (k) retirement account in a calendar year without facing tax penalties.
— the contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you’re 50 or older). — the 401 (k) contribution limit for 2024 is $23,000 for employee contributions, and $69,000 for the combined employee and employer contributions.