Online Services

Ontario's online tax service, ONT-TAXS online
Secure, convenient and free online access to your business tax account(s) 24 hours a day, seven days a week.

Ontario has other online business services to help you:

  • Register your business

    You can register or renew your business name, get a Master Business License and, if eligible, apply for additional accounts with different government bodies.

    To register for federal programs (e.g. HST, payroll deductions, corporate income tax and import-export program), please visit Canada Revenue Agency's Business Registration Online.

  • File your tax returns

    File tax returns using ONT-TAXS online and get immediate confirmation that your return was received by the ministry.

  • Make tax payments

    Make payments using ONT-TAXS online or through your financial institution's website.

  • Change your business address

    Update your business address, mailing address or phone number attached to your Corporations Tax, Employer Health Tax, or Retail Sales Tax accounts through ServiceOntario. If you are a registered ONT-TAXS online user, update information on your returns.

    Important: To change business ownership information, please call the ministry at 1 866 ONT-TAXS (1 866 668-8297).

  • Close your account

    Use the Change of Business Information service to close your Retail Sales Tax, Employer Health Tax, Harmonized Sales Tax and Corporate Income Tax accounts.

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