Hello: (This is not legal advice. Please consult with an attorney in your jurisdiction for more guidance.) Most businesses are required to register with the IRS to receive a Federal Employer Identification Number (FEIN). This is also sometimes referred to as an Employer Identification Number (EIN), or a Federal Tax ID Number. You may apply for an EIN online if your principal business is located in the United States or U.S. Territories. The person applying online must have a valid Taxpayer Identification Number (SSN, ITIN, EIN). As a business in Maryland, it is a good idea to open a bank account. Some banks and credit unions do allow you to open a bank account with an ITIN.