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 Oct. 29, 2024 — Two Sacramento residents plead guilty to false income tax return scheme Oct. 29, 2024 — Los Angeles attorney pleads guilty to federal charge for willfully evading payment of over $4 million in income tax over two decades Oct. 28, 2024 — Monmouth County doctor sentenced to 27 months in prison for harboring undocumented workers from India More press releases