The IRS utilizes a very broad definition of “responsible person” in the context of trust fund recovery penalties. The term, which may extend to more than one party within a corporation, partnership or LLC, applies to any person who willfully fails to perform a duty to pay trust fund taxes. It may be a corporate officer, director, employee, or shareholder, as well as a manager, employee, or member of a limited liability company. If a person is in any of the aforementioned positions where he or she controls a business’s financial affairs, liability as a responsible person for trust fund recovery penalties is a genuine possibility.