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 May 1, 2024 — Utica man sentenced for his role in large fentanyl conspiracy May 1, 2024 — Las Vegas woman sentenced to prison for $1 million Medicaid fraud scheme May 1, 2024 — Georgetown woman found guilty of Paycheck Protection Program fraud More press releases