The Canadian tax calendar has more important dates than just April 30. From RRSP contributions to quarterly instalments, benefit recalculations and filing deadlines for special situations, missing the right date can cost real money. Here is a complete 2027 tax calendar for individual Canadian taxpayers.
Full 2027 Tax Calendar: Month by Month
| Date | Deadline / Event | Who It Affects |
|---|---|---|
| Jan 1, 2027 | New TFSA contribution room added ($7,000 estimated for 2027) | All TFSA holders |
| Jan 15, 2027 | Final T4 data submission deadline for employers to CRA | Employers |
| Feb 28, 2027 | T4, T4A, T5 slips must be issued to employees/recipients | All employees |
| Late Feb 2027 | CRA NETFILE opens for 2026 tax year returns | All filers |
| Mar 2, 2027 | RRSP contribution deadline for 2026 deduction | RRSP holders |
| Mar 15, 2027 | Q1 tax instalment due | Self-employed, investors, retirees |
| Apr 30, 2027 | T1 filing deadline AND payment deadline for most individuals | All individuals |
| Jun 15, 2027 | T1 filing deadline for self-employed (balance still due Apr 30) | Self-employed |
| Jun 16, 2027 | Q2 tax instalment due | Self-employed, investors, retirees |
| Jul 2027 | CCB and GST/HST credit recalculated based on 2026 return | All benefit recipients |
| Sep 15, 2027 | Q3 tax instalment due | Self-employed, investors, retirees |
| Dec 15, 2027 | Q4 tax instalment due | Self-employed, investors, retirees |
| Dec 31, 2027 | Year-end RRSP contribution window opens for 2027 tax year | RRSP holders |
The Three Most Expensive Deadlines to Miss
1. April 30 — T1 Filing and Payment Deadline
Missing April 30 with a balance owing triggers: a 5% late-filing penalty + 1%/month up to 12 months, plus daily compound interest at the prescribed rate (~9–10%). On a $5,000 balance, the 3-month penalty alone is $400. File on time even if you cannot pay in full.
2. March 2 — RRSP Contribution Deadline
Missing the RRSP deadline means losing the tax deduction on contributions made after March 2 until next year's filing season. If you are in the 33% tax bracket and contribute $10,000 by March 2, you recover $3,300 in refund. Miss the deadline, and that refund waits another year. Unused RRSP room does carry forward — but you lose a full year of tax-sheltered growth.
3. July (CCB Recalculation)
If you have not filed your 2026 T1 return by July 2027, the CRA stops your Canada Child Benefit payments in July. Filing late means payments resume retroactively once your return is assessed — but the missed payments during the gap can cause real cash-flow problems for families with children.
Important Dates for Quebec Residents
Quebec residents have the same federal deadlines listed above, but also file a separate provincial return with Revenu Québec:
- April 30: TP-1 (Quebec provincial return) filing and payment deadline
- June 15: Extended TP-1 deadline for self-employed (payment still due Apr 30)
- Quarterly instalments: Same dates as federal, but paid to Revenu Québec separately
Set Calendar Alerts for Every Deadline
Add all four tax instalment dates, the RRSP deadline, and the April 30 filing deadline to your phone or calendar — with reminders at least two weeks in advance. This gives you time to gather what you need without rushing. The RRSP deadline in early March especially catches people off guard — most people assume it coincides with the filing deadline in April. It does not: RRSP contributions after March 2 cannot be deducted on your 2026 return.
Frequently Asked Questions
The deadline to file your T1 return for the 2026 tax year is April 30, 2027. If you or your spouse are self-employed, you have until June 15, 2027 to file — but any balance owing is still due April 30. If April 30 falls on a weekend, the deadline shifts to the next business day.
The RRSP contribution deadline for the 2026 tax year is March 2, 2027 (60 days after December 31, 2026). Contributions made between January 1 and March 2, 2027 can be deducted on either your 2026 or 2027 T1 return, at your choice. After March 2, new contributions count only toward your 2027 return.
For individuals required to pay tax instalments, the 2027 quarterly deadlines are March 15, June 16 (15th falls on Sunday), September 15, and December 15. Residents of Quebec have the same federal deadlines, but also pay provincial instalments to Revenu Québec on the same schedule.
No — unlike RRSPs, TFSAs have no annual contribution deadline. You can contribute at any time during the calendar year. Your contribution room accumulates as of January 1 each year (unused room carries forward indefinitely). However, if you withdraw from a TFSA, that withdrawn amount is only added back to your room on January 1 of the following year — not immediately.
The GST/HST credit is paid in four quarterly instalments: January, April, July, and October. For the 2027 payment year (based on your 2026 T1), payments are typically issued on the 5th of the payment month. You must have a filed 2026 return assessed before the July 2027 payment cycle to receive the full year's entitlement.
Never Miss a Tax Deadline Again
MaxRefund proactively tracks all deadlines for our clients — RRSP deadlines, filing dates, quarterly instalments — so nothing slips through.
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