This handbook, which provides a complete summary and analysis of the "Check-the-Box" rules, offers guidance to the most important new form of business organization to emerge in recent years. It also offers state-by-state coverage of limited liability companies (LLCs), forms for LLC articles and operating agreements, and tax status of LLCs, with texts of the relevant IRS revenue and private letter rulings. Also includes discussion of how LLCs stack up against S and C corporations and partnerships, citations to all available LLC statutes, and coverage of the emergence of the LLC as an alternative entity to the professional corporation.