Before you submit a complaint to the Taxpayers' Ombudsman, please read our Submit a Complaint section.
8:15 a.m. to 4:30 p.m. (Eastern Time)
Monday to Friday (except holidays)
Office of the Taxpayers' Ombudsman
600-150 Slater Street
+1-866-586-3839 (Canada and the United States)
+1-613-946-2310 (outside Canada and the United States)*
* Please note that we accept collect calls.
+1-866-586-3855 (Canada and the United States)
+1-613-941-6319 (outside Canada and the United States)
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