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 April 23, 2024 — Deepwater man sentenced for $500,000 CARES Act fraud April 23, 2024 — Chicago-area tax preparer sentenced for false return scheme April 23, 2024 — Louisville man indicted for controlled substances conspiracy, heroin, and fentanyl trafficking offenses and money laundering More press releases