Report a lead on suspected tax cheating in Canada – How to report and send supporting documents

From: Canada Revenue Agency

4. How to report and send supporting documents

After you send a lead, you cannot take it back.

Thank you for helping to fight tax cheating.

Submit a new lead online

Other ways to report a new lead

  • By phone:
    • 1-866-809-6841
      Office hours: 8:15 am to 4:45 pm, Eastern time
  • By mail:
    • National Leads Centre
      Canada Revenue Agency
      200 Town Centre Court
      Scarborough ON M1P 4Y3
  • By fax:
    • 1-888-724-4829

If you prefer to send a lead by mail or fax, make sure you give as much relevant information as you can to allow the CRA to review the file to determine if tax cheating occurred.

Sending documents to support your lead

If you have already made a lead submission using the online form or by calling the National Leads Centre, please send any supplemental information to our attention by mail or fax:

  • By mail:
    • National Leads Centre
      Canada Revenue Agency
      200 Town Centre Court
      Scarborough ON  M1P 4Y3
      Lead number: XXXXXXX
  • By fax:
    • 1-888-724-4829
      (include your lead number)

You were given a lead number in response to your first submission. Clearly write "Lead number: XXXXXXX" at the top right corner of every page you send us.  If you don't have that number, you should send a new lead.

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