Quebec Corporate Tax Returns (CO-17)
If your corporation has a permanent establishment in Quebec, it files the CO-17, Quebec's corporation income tax return. We prepare and file it electronically, coordinate it with your federal T2, and make sure it is accurate and ready to stand up to CRA and Revenu Quebec review.
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Quebec's corporation income tax return
The CO-17 is Quebec's corporation income tax return, the provincial equivalent of the federal T2. While the Canada Revenue Agency administers federal corporate tax, Revenu Quebec administers corporate tax inside the province. A corporation that operates in Quebec generally has to file both returns for the same fiscal year, and the two need to line up. Every CO-17 we handle is prepared and filed by a CPA.
Source: Revenu Quebec, Corporation Income Tax Return.
The CO-17 at a glance
Who must file
Corporations with a permanent establishment in Quebec at any point in the fiscal year.
Six month deadline
The CO-17 is filed within six months of the corporation's fiscal year end.
Filed electronically
Since November 2019, Revenu Quebec requires the CO-17 to be filed electronically.
Matched to your T2
We coordinate the CO-17 with your federal T2 so the numbers agree across both returns.
CO-17, federal T2, and how they fit together
Operating in two tax systems at once is where Quebec corporations most often slip. Your corporation reports to the Canada Revenue Agency on the federal T2 and to Revenu Quebec on the CO-17, and both returns cover the same fiscal year. When the two are prepared separately, or by different people, small differences in income, deductions, or tax credits can surface later and trigger questions.
We prepare them together. We start from clean books, build the federal federal corporate tax (T2) return, then carry the figures into the CO-17 so the provincial return reconciles to the federal one. Because Revenu Quebec requires electronic filing, we file the CO-17 online and confirm it was received. Returns are prepared and filed by a Chartered Professional Accountant (CPA), so your filing is accurate and ready to stand up to CRA review.
If your corporation also collects Quebec sales tax, we can fold that work in through our QST filing, and if you or your shareholders have Quebec personal obligations we handle Quebec personal tax too. You can see the full picture across all our tax services.
Your CO-17, handled end to end
Confirm your Quebec footprint
We check whether your corporation has a permanent establishment in Quebec and confirm which returns apply for the fiscal year.
Prepare the T2 and CO-17 together
We build the federal T2 and the Quebec CO-17 from the same clean books so the two returns reconcile.
File electronically, on time
We file the CO-17 online with Revenu Quebec inside the six month window and confirm receipt.
Keep you review ready
We retain the working papers behind every figure, so your filing is ready to stand up to CRA review.
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Ready to file your Quebec corporate return?
Book a free 30 minute consultation. We will confirm whether the CO-17 applies, map it to your federal T2, and tell you exactly what filing on time takes.
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