Tax season 2026 covers your 2025 income — the money you earned, invested, and reported during the calendar year from January 1 to December 31, 2025. Whether you're a salaried employee, a self-employed professional, a small business owner, or a landlord in Calgary, the CRA expects a return. Filing correctly and on time means avoiding interest charges, catching every credit you're entitled to, and staying in good standing with the Canada Revenue Agency.
This guide covers the essential deadlines, the major changes affecting 2025 returns, what documents you'll need, and the key differences between individual and small business filing requirements.
| Deadline | Who It Applies To | What's Due |
|---|---|---|
| March 2, 2026 | All RRSP contributors | Last day to contribute to RRSP for 2025 deduction |
| April 30, 2026 | Most individuals | T1 personal return and any balance owing |
| June 15, 2026 | Self-employed individuals & spouses | T1 return (but balance owing still due April 30) |
| 6 months after fiscal year end | Corporations (T2) | Corporate return filing deadline |
| 2 months after fiscal year end | Most corporations | Corporate tax balance owing |
Several important updates affect 2025 T1 returns that Canadians need to know about:
Before you sit down with your accountant or open your tax software, collect these documents:
Self-employed Canadians get an extended personal filing deadline of June 15, 2026 — but any taxes owed are still due by April 30. This creates a trap: you must estimate what you owe and pay by April 30 to avoid interest, even if your return isn't complete.
For incorporated small businesses, the T2 corporate return is due six months after your fiscal year end. If your corporation's fiscal year ended December 31, 2025, your T2 is due June 30, 2026, and any balance owing is due March 2, 2026 (two months after year end for most private corporations).
Self-employed individuals also need to report all business income on Schedule T2125, deduct eligible business expenses, and calculate net self-employment income for CPP purposes. Remember: self-employed individuals pay both the employee and employer portions of CPP — a rate of 11.9% on net self-employment income up to the maximum pensionable earnings.
The CRA strongly encourages electronic filing for all returns. NETFILE (for individuals) and EFILE (for tax professionals filing on behalf of clients) allow returns to be submitted directly to CRA, with refunds typically arriving within two weeks when combined with direct deposit. Paper returns can take 8+ weeks to process.
For corporations, electronic T2 filing became mandatory starting with the 2024 federal budget measures, with a $1,000 penalty for non-compliant paper submissions. Any Calgary corporation still filing on paper should transition to electronic filing immediately.
Tax season is busy — but a missed deduction, a late filing, or an error on your return can cost far more than any filing fee. Swift Accounting's Calgary tax professionals handle personal and corporate tax returns year-round, not just April. We ensure every eligible credit is claimed, every deduction is properly documented, and your return is filed accurately and on time.
Whether you're a salaried employee with a straightforward T4, a self-employed consultant with multiple income streams, or a small business owner navigating your first corporate return, we have the right level of support for your situation. Book a free consultation and let's get your 2025 return filed right.