Tarps4Lesotho is A sole proprietorship—also referred to as a sole trader or a proprietorship—is an unincorporated business that has just one owner who pays personal income tax on profits earned from the business. A sole proprietorship is the easiest type of business to establish or take apart, due to a lack of government regulation. As such, these types of businesses are very popular among sole owners of businesses, individual self-contractors, and consultants. Many sole proprietors do business under their own names because creating a separate business or trade name isn't necessary.