Here Are The Permits, Tax ID Number(s) and Other Registrations Required When Starting a Business All Businesses need at a minimum a Business License and a Fictitious Business Name DBA If you are a retailer or wholesaler, you will need minimum a Sellers Permit Resale Business License, & a Business License If you hire workers, you will need minimum a Federal ID & State Employer ID , & a Business License . Corporations and LLCs need a Corporate certificate filed and Federal ID . Partners need at a minimum a Federal ID & a DBA. Sole Owner/Proprietors may get and use a Federal ID & also at a minimum get a Business License but also a DBA if using a trade name. Instead of filing a Business License, you can choose a Limited Liability Company LLC or corporation filing & You will not need a DBA.