IRS Whistleblower Office
The IRS Whistleblower Office is a branch of the United States Internal Revenue Service that will "process tips received from individuals, who spot tax problems in their workplace, while conducting day-to-day personal business or anywhere else they may be encountered." Tipsters should use IRS Form 211 to make a claim. == History and operations == The program has existed since the 1800s in various forms and is intended to uncover companies and individuals who are underpaying their taxes or otherwise committing tax fraud.