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 February 3, 2023 — Brookline doctors indicted on additional tax charges February 3, 2023 — Orinda man sentenced to 40 months for bank fraud, wire fraud, money laundering February 3, 2023 — Former bank teller sentenced for federal fraud charges More press releases