Canada Revenue Agency
Goods and Services Tax Credit
Toll-free: 1-800-959-1953
Website: www.cra-arc.gc.ca/contact/tso-e.html

Ministry of Finance
Income Tax Related Programs Branch
PO Box 624, 33 King St. W.
Oshawa ON L1H 8H8
Toll-free: 1-800-263-7965
TTY Toll-free: 1-800-263-7776
TAX FAX: 1-877-482-9329
Website: www.fin.gov.on.ca

Municipal Property Assessment Corporation
Toll-free: 1-866-296-MPAC (6722)
Website: www.mpac.ca

NetFile
Toll-free: 1-800-714-7257
Website: www.netfile.gc.ca

Tax Information Phone Service
Toll-free: 1-800-267-6999
Website: www.cra-arc.gc.ca/tips