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 Dec. 11, 2024 — Former Pigeon Township trustee and co-conspirator sentenced for stealing thousands of dollars from local taxpayers in kickback scheme Dec. 11, 2024 — San Antonio financial advisor arrested, charged with obstruction of justice Dec. 11, 2024 — Massachusetts businessman sentenced for million dollar payroll tax fraud scheme More press releases