Whether starting a new business, expanding upon a current one, hiring employees for the first time, changing ownerships, or moving a current business into a new area, you should seriously consided the shape your business takes.  Common types of organizational structures are described in the link below and give you assistance in choosing the structure that will best serve your business' needs.
 
 
Obtaining an Employment Identification Number (EIN) is integral to understanding your business' state and local tax obligations.  The link below discusses how one obtains an EIN, and defines some of the more common state and local taxes.  It also discusses eligibility requirements a business must meet in order to qualify for exemption from certain taxes.