Important Tips for Filing Québec's Corporate Income Tax Return CO-17

Over the years, common questions arise when filing CO-17 and often, the answers to these questions come as a surprise to most.

Do you file CO-17 returns? If so, did you know:

  • A Québec Identification number (ending in “IC 0001”) is mandatory if you are filing a CO-17 return, whereas a Québec enterprise number (NEQ) is optional. If you have both, even better!
  • If your business has just recently incorporated  and you are filing a CO-17 for the first time, you may not be able to file electronically. Revenu Québec may not have your business registered in their records; if this is the case, your filing could be rejected and you’ll need to contact them before trying again.
  • Are you filing old returns and want to do it electronically? You might be out of luck. Revenu Québec only supports three versions of corporate returns at a given time – the current, and two years prior. If you are filing a return with a taxation year beyond two prior modules, you’ll have to paper file.

As always, visit our ProFile website for support and product information.

About the Author

Kimberly Siu

Kimberly Siu

Kimberly Siu is a CPA and tax specialist from public practice, who now leads ProFile’s corporate tax module.

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