Disregarded Entity Definition - What is a Disregarded Entity?

What is a disregarded entity? A disregarded entity is a business entity which is considered to be an undivided part of the owner of the entity for federal tax purposes. That is, the entity is disregarded as an entity separate from the owner. A good example of disregarded entities is a single member LLC that does not choose to be classified as a corporation for federal tax purposes. A single member limited liability company that is not classified as a corporation automatically defaults to a disregarded entity, and file federal income tax return as a sole proprietorship. How does IRS treat ...