T2 Corporate Tax Return Canada: Complete Guide

Every Canadian corporation — from a one-person consulting company to a restaurant franchise — must file a T2 Corporation Income Tax Return every year. Unlike personal taxes, there's no exemption for small revenues or a loss year: if you're incorporated, you file. Miss the deadline and the CRA will charge interest starting the day after it passes.

This guide covers the T2 filing process from start to finish: who files, when, what rates apply, which schedules matter most, and the mistakes that cost Canadian small businesses the most money.

Who Must File a T2?

All corporations that are resident in Canada must file a T2 for every tax year, even if:

• The corporation had zero revenue
• It is inactive (a shelf or dormant corporation)
• It operated at a net loss for the year
• The business is very small (one person, home office)

Non-resident corporations that carried on business in Canada or disposed of taxable Canadian property must also file a T2 for the relevant year.

T2 Filing Deadline

The T2 is due 6 months after the end of your corporation's fiscal year. Unlike personal taxes, the corporate deadline is tied to your fiscal year-end, not the calendar year.

Fiscal Year-End	T2 Filing Deadline	Tax Payment Deadline
December 31, 2025	June 30, 2026	March 31, 2026 (CCPC with SBD) / Feb 28, 2026 (others)
March 31, 2026	September 30, 2026	June 30, 2026 / May 31, 2026
June 30, 2026	December 31, 2026	September 30, 2026 / August 31, 2026
September 30, 2026	March 31, 2027	December 31, 2026 / November 30, 2026

Note that the tax payment deadline is earlier than the filing deadline. For a Canadian-Controlled Private Corporation (CCPC) eligible for the Small Business Deduction, tax is due 3 months after year-end. For other corporations, it's 2 months. Interest accrues daily after the payment deadline even if you haven't filed yet.

Corporate Tax Rates (2026)

Canadian corporations pay both federal and provincial income tax. The combined rate depends on whether you qualify for the Small Business Deduction (SBD).

Federal Rates

• General federal rate: 28% (reduced to 15% with the general rate reduction)
• CCPC rate on first $500,000 of active business income: 9% (after SBD)

Combined Federal + Provincial Rates (2026 estimates)

Province	SBD Rate (≤$500K)	General Rate (>$500K)
Quebec	14.0%	26.5%
Ontario	12.2%	26.5%
BC	11.0%	27.0%
Alberta	11.0%	23.0%
Manitoba	9.0%	27.0%

Key Schedules Inside the T2

The T2 is not just one form — it comes with dozens of schedules. Here are the ones that matter most for most small corporations:

Schedule 1 — Net Income for Tax Purposes

Reconciles your accounting net income (from financial statements) to income for tax purposes. This is where you add back non-deductible expenses and claim deductions not already in your books.

Schedule 8 — Capital Cost Allowance (CCA)

Claims depreciation on depreciable property (equipment, vehicles, computers, leasehold improvements). CCA is optional each year — you can claim less than the maximum to preserve deductions for future profitable years. See our guide on Capital Cost Allowance in Canada.

Schedule 200 — T2 Corporation Income Tax Return (Summary)

The main return page. Calculates total taxable income, tax payable, instalments already paid, and balance owing or refund.

Schedule 7 — Aggregate Investment Income

Critical for corporations with passive income (dividends, interest, rental income from a corporation). Passive income above $50,000/year reduces your SBD — $5 for every $1 of passive income over the threshold, eliminating it entirely at $150,000.

Small Business Deduction: The Most Valuable T2 Deduction

The Small Business Deduction reduces the federal tax rate on active business income from 15% to 9% — a 6% saving — on the first $500,000 earned in a tax year. To qualify:

• The corporation must be a CCPC (Canadian-Controlled Private Corporation)
• Income must be from an active business (not passive investment income)
• Taxable capital employed in Canada must be under $15 million (phased out between $10M–$15M)
• Associated corporations share the $500,000 limit

Common T2 Mistakes Small Business Owners Make

1. Missing the Payment Deadline

Many owners focus on the filing deadline but forget that tax must be paid 2–3 months after year-end — well before the 6-month filing deadline. The CRA charges prescribed interest (currently around 9–10% annually) on any late payment.

2. Not Filing When There's a Loss

A loss year still requires a T2 filing. Filing it establishes your non-capital loss, which can be carried back 3 years or forward 20 years to offset future taxable income. Skipping the filing means losing those loss carry-forwards.

3. Forgetting the Provincial Return

Quebec corporations must also file a CO-17 with Revenu Québec. Some provinces (Ontario, Alberta, BC) have integrated with the federal T2 — but Quebec has not. If you operate in Quebec, a separate CO-17 is mandatory.

4. Claiming CCA on the Wrong Class

Different asset types belong to different CCA classes with different rates (Class 8: 20%, Class 10: 30%, Class 50/computers: 55%). Claiming the wrong rate either over- or under-deducts and creates a filing error the CRA will catch.

Who Prepares the T2?

Most incorporated small businesses use a CPA (Chartered Professional Accountant) to prepare and file the T2. The return requires financial statements, and errors can trigger reassessments or penalties years later.

MaxRefund prepares year-end working files and financial statements that are T2-ready for your CPA, reducing their time (and your bill) significantly. We also handle bookkeeping, payroll remittances, and GST/HST throughout the year so your accountant has clean, reconciled data at year-end.