Request for an Adjustment to a Corporation Income Tax Return or to an Information and Income Tax Return for Non-Profit Corporations (courtesy translation)

Form CO-17.R must be completed by any corporation that wants to amend a previously filed income tax return. A corporation can use commercial software to file an amended income tax return online. For more information, consult the documentation for the commercial software you use.

Form CO-17.R must also be completed by any non-profit corporation that wants to amend a previously filed information and income tax return.

In compliance with our language policy, the official version of this document is in French only. To access it, click français.

The courtesy translation of this document is available below for information purposes only.


This form can be signed electronically.

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2022-09 version

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