Minimum balance requirements vary depending on which United Bank account you plan to open. You don't need to maintain a minimum balance for a United Bank Platinum Savings Account and United Bank Free Checking Account. United Bank also has rewards checking accounts, interest-earning checking accounts, and money market accounts. The Platinum Checking Account requires a minimum balance of at least $2,500 to waive monthly service fees, and the Super Money Market Account requires a minimum balance of at least $15,000 to waive monthly service fees.