Is there an age requirement to open a brokerage account? February 24, 2020 18:12 Updated Follow Yes, you must be 18 years old. Related articles How do I open an Active Investing brokerage account? Can I combine my Automated Investing and Active Investing accounts into one? Can I withdraw cash from my account if I have a debit balance? Types of Investments With SoFi Invest How often is the interest accrued and compounded?