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 5, 2021 — Manhattan U.S. Attorney files civil injunction lawsuit to shut down Bronx tax preparer and his company March 5, 2021 — Bergen County man charged with tax evasion March 4, 2021 — Windsor woman sentenced to 12 months’ imprisonment for aiding and abetting the preparation and filing of false tax returns with the IRS More press releases