IRS Criminal Investigation (CI) serves the American public by investigating potential criminal violations of the Internal Revenue Code and related financial crimes in a manner that fosters confidence in the tax system and compliance with the law. Report tax fraud Identify tax schemes Report tax fraud Voluntarily disclose What we do About Criminal Investigation What we investigate Investigation process J5: Our international partnership Latest news Aug. 20, 2024 — Federal grand jury in Louisville returns 5 indictments charging 37 defendants with drug trafficking and firearms offenses Aug. 20, 2024 — Couple admits COVID-19 loan fraud scheme Aug. 20, 2024 — Scrap metal dealer pleads guilty in multi-state catalytic converter theft conspiracy More press releases