Online Services

ONT-TAXS online

Frequently Asked Questions About Representatives using ONT-TAXS online


How do my clients authorize me to use ONT-TAXS online on their behalf?

Before your clients can authorize you to use ONT-TAXS online on their behalf, you will need to sign up as a representative with the ministry. We will then send to you by mail a Web Access Code and PIN. You will need the Web Access Code and PIN to create your ONe-key ID and password and set up your access to ONT-TAXS online. Once you have set up your access, provide your Web Access Code to your clients so they can add you as their representative in ONT-TAXS online. To receive your Web Access Code and PIN, call us at 1 866 ONT-TAXS (1 866 668-8297).


Can my employees use ONT-TAXS online on my behalf?

Yes. Once your clients have added you as their representative in ONT-TAXS online you can provide your employees with the same access level that your clients assigned to you.


Can I use the 'Get Started' online form to sign up for ONT-TAXS online?

Please call us at 1 866 ONT-TAXS (1 866 668-8297) to sign up as a representative for ONT-TAXS online.


My clients have already authorized me to act on their behalf using a paper form. Will I be able to access their information using ONT-TAXS online?

To access your client's tax information online you will need to sign up for ONT-TAXS online. Once you've set up your access to ONT-TAXS online, ask your clients to add you as their representative when they sign up for ONT-TAXS online.

Call us at 1 866 ONT-TAXS (1 866 668-8297) to sign up for ONT-TAXS online. We will then mail the enrolment information you need to get started.


What can I do as a representative using ONT-TAXS online?

Your clients assign the access level they would like you to have when using ONT-TAXS online on their behalf. Access levels include:

  • view account information
  • update account information
  • file returns, including certain returns in XML format for Fuel Tax, Gasoline Tax and Tobacco Tax
  • make payments
  • send electronic messages to the ministry, or
  • any combination of these levels.

You also have the option of providing your employees with the same access level that your client(s) assigned to you. If you have questions about getting online access or the access level you have been provided, please contact your client.


How will I know if my clients add me as their representative in ONT-TAXS online?

The ministry will send you an e-mail notification each time one of your clients adds you as their representative in ONT-TAXS online.

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