Contact numbers for Government Departments:

Individual Income Tax Enquiries:
1-800-959-8281

Business Enquiries and Registration:
1-800-959-5525

T.I.P.S. (Tax Information Phone Service) Automated Services:
1-800-267-6999

Income Tax Refund Enquiries:
1-800-959-1956

Canada Child tax Benefit Enquiries:
1-800-387-1193

GST/HST Credit Enquiries:
1-800-959-1953

CPP and OAS Enquiries:
1-800-277-9914

Alberta Seniors Benefit Enquiries:
780-427-7876