Most businesses in the United States are operated as sole proprietorships. This means that the individual who operates the business owns the business personally.
Sole proprietorships have really only one advantage .they are very easy to get started.
There is no separate entity to set up. All you need to do is open up a bank account under a separate tax identification number and you are in business. If you operate under a name other than your personal legal name, you must obtain a fictitious name registration in most states. Depending on the activity you are engaging in, you may need to obtain licenses from the state or federal government. But ease of starting the business is the ONLY benefit of a sole proprietorship.