Fidelity Brokerage Minimum Balance is free for customers who have a brokerage account and meet the $2500 balance requirement to activate the service. Once primarily a mutual fund provider, Fidelity Brokerage Minimum Balance is now a full-service broker, providing online, phone and branch services for trading stocks, mutual funds, options, and bonds. Account types include taxable brokerage accounts, individual retirement accounts (IRA’s), education accounts (529), and cash management accounts.