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How Do I Report Suspected Tax Fraud Activity?

There are several ways to report suspected tax fraud.

  • Call us toll free at 1-866-859-2254 (in Helena, 444-6900). The call is confidential.
  • Fax your complaint to us at (406) 444-6642.
  • Contact us anonymously by completing Form STFIR Information Referral; or
  • Write us at:

    Montana Department of Revenue
    Attention: Compliance Unit
    PO Box 7149
    Helena, MT 59604-7149

    or visit us at:
    125 N. Roberts, 3rd Floor
    Helena, MT 59601

Note: Suspected cases of federal tax fraud should be reported to federal authorities.

Last updated 1/12/2012 4:25:40 PM