Corporate Tax Filing Deadlines in Canada: Key Dates and Checklist for 2026

If you operate a corporation in Canada, understanding the Canadian corporate tax filing deadline rules is critical. Missing key filing or payment dates can result in penalties, interest, and avoidable CRA scrutiny. Below is a clear breakdown of what corporations need to know for 2026 and how to stay compliant.

For a complete overview of personal and business filing dates in one place, see our companion post Tax Filing Deadline Canada: Key Dates and Checklist for 2026 (Personal and Corporate). For broader guidance on filing, CRA updates, and compliance, visit our Canadian Tax & Compliance hub.

 

When Is the Corporate (T2) Tax Return Deadline?

All resident corporations must file a T2 corporate income tax return annually, even if no tax is payable.

• Your T2 return is due six months after your fiscal year-end. For example, a December 31, 2025 year-end means your T2 is due June 30, 2026. A March 31, 2026 year-end means your T2 is due September 30, 2026.
• Corporate income tax balances are generally due two months after year-end. Certain Canadian-controlled private corporations (CCPCs) may qualify for a three-month payment deadline if specific CRA conditions are met.

You can confirm official requirements on the CRA T2 Corporation Income Tax page. The key distinction is that your payment is typically due before your filing deadline.

 

T4, T5, T3 and Other Information Returns

Corporate compliance extends beyond the T2. If your corporation pays employees, issues dividends, or operates through trusts, additional reporting deadlines apply.

Return	Deadline (typical)
T4 slips and summary (employment income)	February 28, 2026 (for 2025 calendar year)
T5 slips (dividends, investment income)	February 28
T3 trust return	90 days after the trust’s year-end

The CRA provides filing guidance on its Information Returns and Slips page. These filings carry separate penalties if missed, and fines can increase with the number of slips issued.

 

BC and Provincial Considerations for Corporations

If your corporation carries on business in British Columbia, additional provincial obligations apply alongside federal deadlines:

• BC corporate income tax is calculated on the T2 (Schedule 5) and is administered by the CRA under the Tax Collection Agreement. Your provincial tax payment and filing align with your T2 year-end and payment deadlines—so the same six-month filing and two- or three-month payment rules apply for BC tax.
• BC Employer Health Tax (EHT) applies to employers with BC payroll above the exemption threshold. EHT has its own filing and payment deadlines (e.g. annual returns and instalments). Check the BC EHTrequirements for your payroll size.
• Provincial sales tax (PST) and GST/HST have separate filing cycles (e.g. monthly, quarterly, or annual depending on volume). Ensure your GST/PST remittances and returns are scheduled so they don’t clash with your T2 and T4 crunch.

Staying on top of BC-specific deadlines helps avoid provincial penalties and interest as well as federal ones.

 

Instalment Due Dates for Corporations

Many corporations must pay tax by instalments throughout the year rather than in a single lump sum.

• Instalments may be required monthly or quarterly depending on prior-year taxable income, federal tax payable thresholds, and corporate structure.
• Missing instalments can trigger interest charges even if your T2 is filed on time. If profitability is changing or your business is scaling, instalment calculations should be reviewed proactively to avoid overpaying or underpaying.

 

Checklist: Get Your Business Ready for Tax Season

Gather books and records

Ensure your financial documentation is complete and accurate: finalized financial statements, general ledger, payroll summaries, dividend declarations, asset acquisition documentation, and GST and PST reconciliations(including BC PST if applicable). Incomplete records are the most common cause of delayed corporate filings.

Reconcile and prepare financial statements

Before filing your T2, confirm shareholder loan balances, intercompany transactions, amortization and depreciation schedules, and corporate expense allocations. Clean financials reduce risk and support defensible tax reporting.

Review instalments and tax position

Compare instalments paid to projected tax liability before the balance-due date. This avoids surprise balances and interest exposure.

File on time or arrange payment

Filing penalties are separate from interest on unpaid balances. File your T2 on time even if full payment is not possible. If necessary, review CRA options for making income tax payments and payment arrangements. For corrections to prior years, see Correct Your Taxes.

 

What If I File Late?

Late corporate filing penalties generally include a percentage of unpaid tax plus additional monthly penalties. Repeat late filers face increased penalties. Interest compounds daily on unpaid balances.

For a detailed breakdown of late-filing consequences for both corporations and individuals, read our guide How to File Taxes Late and Avoid Penalties or Filing Taxes Late: Potential Penalties.

 

FAQ (AEO-friendly)

When is the corporate tax deadline in Canada?
Your T2 return is due six months after your corporation’s fiscal year-end. The balance of tax owing is generally due two months after year-end (or three months for certain CCPCs). Exact dates depend on your year-end.

When are T2 returns due?
T2 returns are due six months after the end of your corporation’s tax year. For a December 31 year-end,  that’s June 30, 2026. Other year-ends follow the same rule.

Do BC corporations have different deadlines?
BC corporate income tax is filed with the T2 and follows the same federal filing and payment deadlines. BC-specific obligations such as Employer Health Tax (EHT) and PST have their own due dates—check BC requirements for your situation.

 

Next steps

Corporate deadlines are only one part of the compliance picture. For personal and business key dates in one place, see Tax Filing Deadline Canada: Key Dates and Checklist for 2026 (Personal and Corporate). For ongoing guidance on filing, CRA updates, and compliance, explore our Canadian Tax & Compliance hub.

If you want help staying compliant and planning ahead, reach out to RHN today for guidance on deadlines and how to optimize your business.

---

This post has been prepared for general information purposes. It is not advice. The information presented may not fit your unique situation. Please consult one of our trusted business advisors at RHN CPA for further clarification and interpretation of your circumstances.

Part of our Tax Law & Compliance hub

Get the full tax and compliance picture

See key filing topics, CRA guidance, and practical resources for individuals and businesses in one place.

View Tax Law & Compliance hub →