Acquired Corporation Unfiled Years Checker
A tax account belongs to the corporation, not its owner. Which years came with the purchase and which are yours.
Written and reviewed by Sharad Gondaliya, CPA (Ontario), CPA Ontario Membership 61040184.
Last reviewed: November 3, 2026
Enter both dates and answer the question.
Gondaliya CPA Professional Corporation is a registered EFILE electronic filer. Returns are prepared and transmitted in Canada. Credentials are never shared and never used offshore.
The Account Belongs to the Corporation
A corporate tax account is the corporation’s, not the shareholder’s. Buying the shares changes who owns the corporation and changes nothing about the account: the Business Number, the fiscal year-end and every outstanding year stay exactly where they were.
So a quiet corporation bought cheaply can arrive with several unfiled years attached, and those years are outstanding on the same account the new owner’s returns will go to.
Which Years Came With It
| Period | Whose years | Still owed? |
|---|---|---|
| From incorporation to the purchase | The corporation’s, under the previous owner | Yes, until each one is filed |
| From the purchase onward | The corporation’s, under you | Yes, as each falls due |
| A year already filed and assessed | The corporation’s | No, closed unless adjusted |
| A year before incorporation | Nobody’s | No tax year exists |
The tax years since incorporation calculator counts the years from the incorporation date, and the unfiled years checker lists which of them are open.
What This Checker Does Not Decide
Buying a corporation has consequences beyond the filing calendar, and this tool does not reach them. It answers one question: the outstanding years belong to the corporation and are still outstanding after it changes hands.
Where a quiet year is outstanding, it is a nil return at $300.00 plus HST per tax year, filed oldest first. Where a year had activity under either owner, it is not a nil year and is handled by Gondaliya CPA Professional Corporation at gondaliyacpa.ca at $350.00 plus HST per year.
Frequently Asked Questions
Do unfiled years come with a corporation you buy?
Yes. The tax account belongs to the corporation rather than to its owner, so every outstanding year is still outstanding after the shares change hands, on the same account the new returns go to.
Who is responsible for the previous owner’s unfiled years?
The returns are the corporation’s to file, and the corporation is now yours. Each quiet year is a nil return at $300.00 plus HST per tax year, filed oldest first because a T2 carries figures forward.
Does the fiscal year-end change when a corporation is sold?
The year-end on the Canada Revenue Agency record is the one the return has to match, and buying the shares does not change it. A return filed to a different date is rejected for the year-end.
Nil T2 Filing, $300.00 plus HST per tax year
Type your corporation name, pick your unfiled years, pay, and sign Form T183CORP on a secure screen. Your CRA confirmation is emailed within 3 business days.
Start Nil T2 Filing NOW