The Internal Revenue Service is strengthening its partnership with the United Kingdom’s tax authority to uncover major tax evasion schemes, and people who report wrongdoing could potentially receive substantial financial rewards. In an October 7, 2026, announcement, the IRS highlighted its collaboration with His Majesty’s Revenue and Customs (HMRC), which recently established a strengthened whistleblower reward program. The effort focuses on uncovering tax violations involving wealthy individuals, large corporations, and complicated international financial arrangements. For people with credible information about serious tax evasion, the programs could offer a financial incentive to come forward.
