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 March 23, 2023 — Ecuadoran national sentenced to prison for participating in tax refund fraud scheme March 23, 2023 — Former owner of Savannah restaurant sentenced to prison, ordered to pay more than 400,000 dollars restitution in tax case March 23, 2023 — Former financial representative is sentenced to seven years in prison for 1.1 million-dollar fraud scheme More press releases