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 30, 2024 — Ohio man sentenced for tax fraud conspiracy April 30, 2024 — California man pleads guilty to employment tax violations April 30, 2024 — Early bitcoin investor charged with tax fraud More press releases