Internal Revenue Service
The IRS collects taxes in advance by  withholding them through employers. Individuals who overpay through tax withholding are issued refunds after they file their income tax return. In 2006 the Seattle Times reported that up to 11.6 million refunds were not paid back because the IRS suspected fraud. According to the Seattle Times the affected taxpayers were not informed of the reason for not getting their refund. Many or most of the people who were not issued refunds were low-income individuals