Sole proprietorships are by far the easiest form of business to create. Because a sole proprietorship is an unincorporated business owned by one person, there are no filings that need to be made or documentation to create. The owner uses (and. risks) their own funds in opening and operating the business. As soon as the owner starts a business, the business is automatically created. For example: Juan wants to start a car washing business. Juan takes some car washing supplies from his house (a bucket, towels, and soap) and tells his neighbors he will wash their cars for $7. Juan automatically has a sole proprietorship