2024 401k Contribution Maximum Salary. The contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you're 50 or older). More people will be able to make contributions to roth.

The contribution limit for simple 401 (k)s is $16,000 (up to $19,500 if you’re 50 or older). For 2024, you can contribute up to $69,000 to your solo 401 (k), or $76,500 if you’re 50 or older.