Apply for an EIN from the IRS. Required for all US businesses to open bank accounts, hire employees, and file taxes.
Enter the legal name exactly as it appears on your formation documents (Articles of Organization / Certificate of Formation).
Enter the 'doing business as' name only if different from Line 1. Leave blank if same.
Only complete if the entity is an estate, trust, or you need a 'care of' name on the EIN letter.