A sole proprietorship is a business that is owned and operated by a single person. The owner of the business is typically referred to as the sole proprietor. As the sole proprietor, the individual is responsible for all aspects of the business, from day-to-day operations to taxes, liabilities, and profits. The title of the sole proprietor is typically simply the name of the individual. For example, if John Doe owns a business, his title would be John Doe, Sole Proprietor.