is it mandatory to send T1013 TO CRA for tax purposes



The form T1013 is used for:

Giving consent to a representative

You can consent to have more than one representative at the same time. However, you must complete a separate Form T1013 for each representative.  

You can also give or cancel a consent by providing the requested information online through "Authorize my representative" on our Web site at

You can also change information about an existing representative through the My Account online service or by completing a new Form T1013. For example, if your existing representative has traditional access only (telephone, in person, and in writing) and you would like to give the CRA your consent to deal with him or her online, a new authorization form must be completed because they are not automatically given online access when they register the business (BN), themselves (RepID) or a group (GroupID) with the "Represent a client" online service. You do not have to complete a new form every year if there are no changes.

The difference between Part 2 and Part 3 is that Part 2 grants online access and Part 3 does not. Therefore both cannot be completed. If both parts are completed, we will only process Part 2.

Note: Online access is not available for trust accounts.

(the above is a part of the information from the CRA site.)

For additional details or questions please call CRA or refer to the instruction by going to this CRA site:
Hope the above helps.

Thank you.
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