When is the T2 corporate tax return due in Canada?
The T2 corporate income tax return is due 6 months after your corporation's fiscal year-end. Any balance of tax owing, however, must be paid within 2 months of the year-end (or 3 months for eligible CCPCs with taxable income below the SBD limit). Filing late results in penalties of 5% plus 1% per month, up to 12 months.
Detailed Explanation
Every Canadian corporation — including inactive corporations and those with no income — must file a T2 Corporation Income Tax Return for every fiscal year. There are no exemptions for small corporations or zero-income years.
T2 filing deadline
The T2 return must be filed within 6 months after the end of the corporation's fiscal year. For a December 31 year-end, the T2 is due June 30. For a March 31 year-end, it is due September 30. For a June 30 year-end, it is due December 31.
Note: The 6-month filing deadline applies to the return itself, not to payment of tax. These are two separate deadlines.
Tax payment deadline
Despite having 6 months to file, corporations generally must pay any balance of corporate income tax within: - 2 months after the fiscal year-end for most corporations - 3 months after the fiscal year-end for eligible Canadian-Controlled Private Corporations (CCPCs) that meet specific conditions: (1) the corporation claimed the Small Business Deduction in the current or previous year, and (2) the corporation's taxable income does not exceed $500,000 in either the current or previous year
This means for a December 31 year-end CCPC qualifying for the 3-month rule, tax is due March 31 even though the T2 return is not due until June 30.
Tax installments
Corporations whose net tax owing exceeds $3,000 in either the current or previous year must make quarterly income tax installments throughout the year. Installments are due on the last day of each full quarter of your fiscal year. For a December 31 year-end, installments are due March 31, June 30, September 30, and December 31.
What must be included in the T2
The T2 is a package that includes: - The T2 Corporation Income Tax Return (core form) - Schedule 1 (Net Income for Tax Purposes) - Schedule 8 (Capital Cost Allowance) - Schedule 100 (Balance Sheet information) - Schedule 125 (Income Statement information) - Schedule 50 (Shareholder information) - Provincial or territorial schedules - Any applicable schedules for special transactions
The T2 must be filed electronically if your gross revenue exceeds $1 million. Most corporations use tax preparation software such as TaxCycle, Profile, or Taxprep to prepare the T2.
Late filing penalties
If the T2 is filed after the 6-month deadline: - 5% of the unpaid tax at the due date, PLUS - 1% of the unpaid tax for each complete month the return is late, up to a maximum of 12 additional months (total 17% after one year)
If the CRA has issued a demand to file and you have previously been assessed a late-filing penalty within the last 3 years, the penalty increases to 10% plus 2% per month up to 20 months.
Nil returns
Even corporations that earned no income in the fiscal year must file a T2. Filing a nil return (zero income, zero tax) is quick but mandatory. Failure to file results in penalties and a demand-to-file letter from the CRA.
Provincial requirements
Most provinces use the federal T2 return as the basis for provincial corporate tax and the CRA processes both together. Quebec still requires a separate provincial corporate tax return filed with Revenu Quebec.
First fiscal year
A newly incorporated corporation's first T2 covers from the date of incorporation to the end of its chosen fiscal year-end. If you incorporate on September 1 and choose December 31 as your year-end, your first T2 covers September 1 to December 31 — a short fiscal year of just 4 months.
Source: https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/corporations/corporation-income-tax-return.html
Real-World Examples
CCPC with March 31 year-end and 3-month payment rule
A consulting corporation has a March 31 fiscal year-end and qualifies as a CCPC using the SBD. Its tax owing for the year is $45,000. The tax must be paid by June 30 (3 months after March 31). The T2 return is due September 30 (6 months after March 31). The corporation makes quarterly installments on June 30, September 30, December 31, and March 31.
Corporation missing the filing deadline
A December 31 year-end corporation owes $20,000 in tax. It files the T2 on September 1 (2 months late). Late filing penalty: 5% x $20,000 = $1,000 base, plus 1% x 2 months = $400. Total penalty: $1,400. Plus the CRA charges daily compound interest on the $20,000 that should have been paid by February 28 (2-month payment deadline for non-qualifying CCPC).
New corporation choosing its fiscal year-end
A corporation is incorporated on March 15, 2026. It can choose any fiscal year-end. Choosing January 31 gives a first short year of March 15 to January 31 (10.5 months). The first T2 is due July 31, 2027. Choosing a non-December year-end means the T2 preparation falls at a less busy time for accountants and the owner's personal tax obligations (April 30) are separated from corporate filings.
Common Mistakes to Avoid
- Confusing the 6-month filing deadline with the 2/3-month payment deadline — the return can be filed later, but tax owing accrues interest from the payment deadline, not the filing deadline.
- Skipping the T2 for a year when the corporation had no income — a nil return is still mandatory, and failure to file triggers a demand-to-file letter and late-filing penalties.
- Not making quarterly installments when required — corporations with more than $3,000 owing for two consecutive years face interest charges on deficient installments.
- Choosing December 31 as the fiscal year-end for a new corporation without considering that this creates year-end accounting pressure during the holiday season and coincides with personal tax preparation in the spring.
Frequently Asked Questions
Can I get an extension on the T2 filing deadline?
The CRA does not grant general extensions for T2 filings in the way the IRS offers automatic extensions for US returns. In exceptional circumstances (natural disaster, CRA systems outage), the CRA may waive penalties and interest under the taxpayer relief provisions. However, you cannot simply request an extension — the 6-month deadline is firm, and penalties apply automatically.
Does every province need a separate corporate tax return?
Most provinces administer their corporate income tax through the federal T2 return, so you file once and both federal and provincial taxes are assessed together. The notable exception is Quebec, which requires a separate provincial corporate tax return (CO-17 or MR-64 forms) filed with Revenu Quebec. Ontario previously had its own return but now uses the federal T2 process.
What records do I need to support the T2?
You must keep all records and supporting documents for at least 6 years after the end of the tax year they relate to. This includes bank statements, invoices, receipts, payroll records, contracts, shareholder loan accounts, minute books, and financial statements. Corporate records (minute books, incorporation documents) should be kept permanently.
Can I amend a T2 after filing?
Yes. You can request an adjustment to a previously filed T2 by filing a T2 Amendment or submitting a request online through CRA My Business Account. Amendments are generally accepted within 10 years of the original filing date. You can also file a T2 late if you missed the deadline — the penalties apply from the due date, but you should still file as soon as possible to stop further monthly penalties.
Do I need an accountant to file the T2?
Legally, you can file your own T2 using CRA-certified tax software. However, the T2 is complex — particularly the schedules for Capital Cost Allowance (Schedule 8), shareholder transactions, and inter-company dividends. Most corporations benefit from using a CPA, especially in the early years, to ensure deductions are maximised and schedules are correct. Mistakes on T2 schedules (particularly CCA or RDTOH) can compound over multiple years.
Practical Tips
- Set a calendar reminder for both your payment deadline (2 or 3 months after year-end) and your filing deadline (6 months after year-end) — they are different dates and missing either one has financial consequences.
- Keep a running trial balance throughout the year rather than handing your accountant a shoebox at year-end — it dramatically reduces professional fees and speeds up T2 preparation.
- File electronically via Corporation Internet Filing even for simple corporations — paper returns take months longer to process and slow down any refund or loss carryback claims.
- Consider a January 31 fiscal year-end if you incorporate early in the year — it gives you a full year before the first T2 is due and separates corporate tax season from personal tax season.
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