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 June 13, 2024 — Justice Department repatriates $1.4B misappropriated 1MDB funds to Malaysia June 12, 2024 — Former IRS employee indicted for fraudulent tax returns June 12, 2024 — Michigan shipping magnate charged with filing false tax returns and employment tax crimes More press releases