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 Nov. 14, 2024 — Indiana man pleads guilty to cocaine, fentanyl, and crack cocaine violations Nov. 14, 2024 — Convicted dark web drug dealer sentenced to 360 months’ imprisonment Nov. 13, 2024 — Denver couple sentenced for scheme that defrauded department of defense contractor More press releases