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 Does SoFi offer Custodial account options? How does SoFi Invest make money off of brokerage accounts? Can I combine my Automated Investing and Active Investing accounts into one? Will your site give recommendations? How do I create an Invest account? How long does it take to open a SoFi Invest account?