Limited Liability Company (LLC)
The LLC is a relatively new type of hybrid business structure that is now permissible in most states. It is designed to provide the limited liability features of a corporation and the tax efficiencies and operational flexibility of a partnership. Formation is more complex and formal than that of a general partnership.
The owners are members, and the duration of the LLC is usually determined when the organization papers are filed. The time limit can be continued, if desired, by a vote of the members at the time of expiration. LLCs must not have more than two of the four characteristics that define corporations: Limited liability to the extent of assets, continuity of life, centralization of management, and free transferability of ownership interests.

Federal Tax Forms for LLC
Taxed as partnership in most cases; corporation forms must be used if there are more than 2 of the 4 corporate characteristics, as described above.

In summary, deciding the form of ownership that best suits your business venture should be given careful consideration. Use your key advisers to assist you in the process.

Information compliments of www.sba.gov.