Limited liability companies are easy to maintain while remaining extremely flexible, so it's not surprising that it is a popular choice among businesses of all different shapes and sizes. Often, owners of an LLC are self employed or run smaller businesses, where the simplicity of pass through taxation and a lack of annual requirements makes a lot of sense. Since the profits and losses are reported directly on the owners personal tax returns, filing taxes is much easier.
Limited liability companies allow for a large variety of management structures based on your specific needs. Management structures for S-Corps are largely dictated by state and federal law. Management schemas for C-Corps are largely dictated by state and federal law. NPOs need to follow strict management laws to guard their non-profit status. Since Sole Proprietorships have only one member, there is no management structure.
LP, Limited partnership: a partnership where at least one partner (the general partner, which may itself be an entity or an individual) has unlimited liability for the LP's debts and one or more partners (the limited partners) have limited liability (which means that they are not responsible for the LP's debts beyond the amount they agreed to invest). Limited partners generally do not participate in the management of the entity or its business.
The businesses registered with the State of Utah are either located in Utah or doing business in Utah as a: Business Trust, Collection Agency, Corporation (For Profit and Non Profit), Professional Corporation, Doing Business As - DBA, Limited Liability Company - LLC, Limited Liability Partnership - LLP, Limited Partnerships - LP, Limited Cooperative Associations - LCA
PLLC, Professional Limited Liability Company: some states do not allow certain professionals to form an LLC that would limit the liability that results from the services professionals provide such as doctors, medical care; lawyers, legal advice; and accountants, accounting services; architects, architectural services; when the company formed offers the services of the professionals. Instead those states allow a PLLC or in the LLC statutes, the liability limitation only applies to the business side, such as creditors of the company, as opposed to the client/customer service side, the level of medical care, legal services, or accounting provided to clients. This is meant to maintain the higher ethical standards that these professionals have committed themselves to by becoming licensed in their profession and to prevent them from being immune (or at least limit their immunity) to malpractice suits.