A sole proprietorship is a business owned by a single individual person. The business name (if any) is a substitute for the person's name (and is sometimes called a "fictitious name". All liabilities, including judgements, of the sole proprietorship business are also liabilities of the person. Corporations (including LLCs) are used, in part, to shield owners, including a sole owner, from being personally liable for for many types of liabilities of the business.
