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 April 12, 2021 — New Castle woman indicted on multiple drug counts April 12, 2021 — Former Nike marketing manager pleads guilty to wire fraud, money laundering, and making false statements April 12, 2021 — Charleston man indicted for allegedly failing to pay employment taxes and personal income taxes More press releases