Choose an ownership structure. A business is a legal entity; it can own property, hold bank accounts and is required to pay taxes.You will have to complete an entry in the Business Owned or Other Relationships section for each name on your list. Considering buying a house under an LLC? Learn the advantages and potential pitfalls to avoid, along with answers to some frequently asked questions. Setting up an LLC, or limited liability company, in Washington State is extremely easy. You only need to step through a simple, online wizard. Form 4797 is used to report gains made from the sale or exchange of business property, including but not limited to property used to generate rental income. A sole proprietorship is easy to form and gives you the most control over your business. Only one person can own this type of business.