Tax Deadlines for the 2026 Tax Year
Missing a deadline can cost you penalties and interest. Here are the key CRA dates for the 2026 tax year, in one place.
The CRA has not published 2026-tax-year deadline pages yet. Dates below marked [VERIFY] follow CRA's standing rules from the 2025-tax-year pages. We will update this page when the CRA publishes the 2026-tax-year editions.
Key dates for the 2026 tax year
The "tax year" is the calendar year: January 1 to December 31, 2026. You file the return for it in early 2027.
Filing and payment deadline — most people [VERIFY]
This is the big one. Most Canadians must file their 2026 return on or before April 30, 2027 [VERIFY]. Any balance owing is also due that day [VERIFY]. The deadline applies to both filing and payment.
RRSP contribution deadline [VERIFY]
CRA rules let you contribute to your RRSP in the first 60 days of 2027 and deduct it on your 2026 return. For the 2026 tax year, that means the deadline falls on March 1, 2027 [VERIFY]. Keep your contribution receipts — you claim RRSP contributions as a deduction on line 20800.
Self-employed filing deadline [VERIFY]
If you or your spouse or common-law partner carried on a business in 2026, your return is due June 15, 2027 [VERIFY]. But careful: any balance owing is still due April 30, 2027 [VERIFY]. Filing later does not buy you more time to pay.
Quarterly tax instalments — 2026
If you pay tax in instalments (for example, because you had no or little tax withheld at source), these 2026 due dates are confirmed by CRA:
- Monday, March 16, 2026 — March 15 was a Sunday, so the next-business-day rule moved the date.
- June 15, 2026
- September 15, 2026
- December 15, 2026
CRA has a weekend-and-holiday shift rule. In the CRA's own words: "When a due date falls on a Saturday, Sunday, or public holiday recognized by the CRA, your return is considered on time if the CRA receives it, or if it is postmarked, on or before the next business day." Payments count as on time if received on the first business day after the due date.
Late-filing penalties — the standing formula [VERIFY for 2026 framing]
The formula below is confirmed on CRA's 2025-tax-year late-filing page. The CRA has not yet published the 2026-tax-year edition, so treat the framing for 2026 as [VERIFY].
- Standard penalty: 5% of your balance owing, plus 1% of your balance owing for each full month your return is late — up to 12 months.
- Repeat offenders: 10% of your balance owing, plus 2% for each full month late — up to 20 months — if you were already penalized in earlier years and received a demand to file.
Two important limits. The penalty only applies if you owe a balance — if you file late but owe nothing, there is no late-filing penalty. But if you owe, compound daily interest starts on the day after the due date on any unpaid amount.
Example: how the penalty adds up
Based on the confirmed 2025-year formula, with a $2,000 balance owing, filed 3 months late.
What if you will miss the deadline?
File anyway. Filing late with a balance owing is almost always cheaper than not filing at all. Penalties grow with each full month you are late.
Pay what you can. Paying part of your balance by April 30, 2027 [VERIFY] stops interest from growing on the amount you paid, even if you cannot pay it all.
If money is tight, CRA payment arrangements exist — but the deadline itself does not move. Check the filing guide for how to get your return in, and use our tax season checklist to gather your slips before you start.
This is general information, not tax advice. For your situation, consult a tax professional or the CRA.
Ready for tax season?
Gather every slip and receipt first — then file with confidence.