Like a corporation, LLCs are required to register in the states they are "conducting (or transacting) business". Each state has different standards and rules defining what "transacting business" means, and as a consequence, navigating what is required can be quite confusing for small business owners. Simply forming a LLC in any state may not be enough to meet legal requirements, and specifically, if a LLC is formed in one state, but the owner (or owners) are located in another state (or states), or an employee is located in another state, or the LLC's base of operations is located in another state, the LLC may need to register as a foreign LLC in the other states it is "transacting business."