Essential services in Ontario http://cbc.ca/news/canada/toronto/ontario-list-essential-businesses-1.5507687
Chartered Professional Accountants Canada: http://cpacanada.ca/
Chartered Professional Accountants of Ontario: http://cpaontario.ca
Canada Revenue Agency: http://www.cra-arc.gc.ca/
Ontario Ministry of Finance Tax Revenue Division:http://www.rev.gov.on.ca/en/index.html
https://www.ontario.ca/page/business-services/