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 30, 2023 — Swiss executive pleads guilty to tax fraud conspiracy March 29, 2023 — Hampton Man Sentenced to 15 Years for Defrauding Elderly Victims and Tax Evasion March 29, 2023 — Two Orlando women sentenced for preparing fraudulent tax returns for three years More press releases