Solo 401k Contribution Limits 2024 Calculator In. Use our calculator to calculate how much you could contribute to an individual 401k based on your age and income. Because of this, there are multiple ways to contribute to a solo 401k that allow you to get to the maximum solo 401k contribution limit for 2023.

For 2023, the limits were $66,000, or $73,500 if you’re 50 or older. For 2024, the max is $69,000 and $76,500 if you are 50 years old or older.