Canada Revenue Agency - CRA

• https://www.canada.ca/en/revenue-agency/services/e-services/e-services-individuals/account-individuals.html - Access your individual tax account 
• https://www.canada.ca/en/revenue-agency/services/e-services/payment-save-time-pay-online.html - Pay your taxes to CRA
• https://www.canada.ca/en/revenue-agency/services/e-services/e-services-businesses/gst-hst-netfile/gst-hst-netfile-ready-file-online-check-list.html - E-file your HST/GST return
  
• https://www.canada.ca/en/revenue-agency/services/e-services/e-services-businesses/payroll-deductions-online-calculator.html - Calculate your employee's payroll deductions  

 Government

• https://www.ontario.ca/page/business-services - Access business services with Ontario government
  
• https://www.canada.ca/en/employment-social-development/programs/ei/ei-list/ei-roe/access-roe.html - File electronic ROE for your employees
  
• https://www.labour.gov.on.ca/english/es/index.php - Access Employment Standards Act and related information
  
• https://www.wsib.ca/en/onlineservices - Report and pay WSIB premiums