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 January 26, 2021 — Former Vice President of recycling company sentenced to 5 months for illegally storing hazardous waste January 26, 2021 — Chicago man charged in conspiracy to sell U.S. government checks stolen from the mail January 26, 2021 — Tax preparer sentenced after admitting to preparing fraudulent federal income tax returns More press releases