T2 Filing Deadline for Ontario Corporations (and When Tax Is Due)
When an Ontario corporation must file its T2 corporate tax return, when the balance owing is due, and how to calculate both from your year-end.
The T2 filing deadline
Every corporation resident in Canada, including inactive ones, must file a T2 return within six months of its tax year-end. Ontario corporate tax is included on the same return, with no separate provincial return.
| Year-end | T2 due |
|---|---|
| December 31 | June 30 |
| March 31 | September 30 |
| June 30 | December 31 |
If the year ends on the last day of a month, the return is due on the last day of the sixth month after.
Payment is due earlier
The balance owing is usually due two months after year-end. Canadian-controlled private corporations that claimed the small business deduction (and meet the income conditions) have three months. Interest runs from the payment due date, even if the return isn't due yet.
Related
Frequently asked questions
- When is the T2 return due?
- Within six months of the end of the corporation's tax year.
- When is corporate tax owing due?
- Generally two months after year-end, or three months for many Canadian-controlled private corporations claiming the small business deduction.
Official sources
- Ontario Business Registry ↗— file and search Ontario registrations
- Corporations Canada ↗— federal incorporation
- Canada Revenue Agency — business ↗— BN, HST, payroll, T2
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