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 26, 2022 — Former Illinois state representative sentenced to nearly five years in federal prison for participating in bribery scheme May 26, 2022 — Queens man sentenced to 51 months in prison for defrauding pharmaceutical manufacturer May 26, 2022 — Twelve defendants sentenced for tax felonies and immigration crimes after major undercover operation More press releases