2024 401k Maximum Contribution. The maximum amount you can contribute to a 401(k), traditional or roth, in 2024 is $23,000, or $30,500 if you are 50 or older. Those 50 and older can contribute an additional.

The contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you’re 50 or older). In 2023, you can contribute up to.