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 25, 2024 — Dog broker sentenced to federal prison for filing false tax returns April 25, 2024 — Minnesota businessman sentenced for tax evasion April 24, 2024 — Houston personal injury attorney and employee indicted for defrauding injured clients of settlement funds More press releases