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Key dates · Canada & Ontario
Every tax deadline that matters, on your calendar.
CRA and Ontario dates for individuals, corporations, employers and childcare operators. Subscribe once and the reminders come to you — a week before and the day before each one.
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- Personal tax
T1, instalments, RRSP, slips, year-end - Corporations & business
T2, balance due, slips, EHT, T3, T5013 - Payroll & HST/GST
Source deductions, HST by frequency, WSIB - Childcare funding (CWELCC)
Peel dates, spending checks, year-end - Everything
All four in one calendar
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Standard CRA and Ontario deadlines.
If a due date falls on a Saturday, Sunday or public holiday, the CRA treats it as on time if received the next business day. Corporate deadlines that depend on your year-end are on the Deadline tools page. Last reviewed September 2026.
Personal tax Subscribe to this calendar
Employees, families, self-employed, investors.
| When | Deadline | Who it applies to | Next | Add |
|---|---|---|---|---|
| Mar, Jun, Sep, Dec — 15th | Personal tax instalment due Instalments are required if your net tax owing is more than $3,000 this year and was in either of the two previous years. The CRA sends instalment reminders in February and August. | Self-employed, landlords, investors — anyone who owes more than $3,000 at filing | Dec 15, 2026 | Google Calendar |
| December 31 | Last day for this year's donations, FHSA and RESP contributions Charitable donations, FHSA contributions (no 60-day extension) and RESP contributions for this year's grant must be made by December 31. TFSA contributions can be made any time there is room. | Everyone | Dec 31, 2026 | Google Calendar |
| February last day | T4, T4A and T5 slips arrive Employers, payers and banks must issue slips by the last day of February. If yours haven't arrived by the first week of March, ask for them. | Everyone | Feb 28, 2027 | Google Calendar |
| March 1 | RRSP contribution deadline for last year's return Contributions made in the first 60 days of the year can be deducted on the previous year's return (February 29 in a leap year). FHSA contributions do not get the 60-day rule — they must be made by December 31. | RRSP contributors | Mar 1, 2027 | Google Calendar |
| April 30 | T1 personal return and balance due File your T1 and pay any balance. Self-employed people and their spouses have until June 15 to file, but interest on a balance starts May 1. | Everyone (self-employed: payment due today, return by June 15) | Apr 30, 2027 | Google Calendar |
| June 15 | T1 filing deadline — self-employed and their spouses Last day to file without a late-filing penalty. Any balance was due April 30. | Self-employed and spouses | Jun 15, 2027 | Google Calendar |
Corporations & business Subscribe to this calendar
Corporations, partnerships, trusts, employers.
| When | Deadline | Who it applies to | Next | Add |
|---|---|---|---|---|
| February last day | T4, T4A and T5 slips and summaries due to the CRA File the T4 and T4A summaries and give employees their slips. T5s for dividends paid during the year are due the same day. | Employers; corporations that paid dividends | Feb 28, 2027 | Google Calendar |
| February last day | Corporate tax balance due — December 31 year-ends Two months after year-end. Canadian-controlled private corporations claiming the small business deduction that meet the income tests get three months (March 31). Other year-ends: use the Deadline tools page on ghayurtax.com. | Corporations with a December 31 year-end | Feb 28, 2027 | Google Calendar |
| March 15 | Ontario Employer Health Tax annual return Due March 15 for the previous calendar year. Employers with Ontario payroll under the exemption usually do not have to file — check with us if unsure. | Employers who file EHT | Mar 15, 2027 | Google Calendar |
| March 31 | T3 trust returns and T5013 partnership returns T3 returns and slips are due 90 days after the trust's year-end (March 31 for December year-ends; March 30 in a leap year). T5013 partnership returns are due March 31 for most partnerships. | Trusts with a December year-end; most partnerships | Mar 31, 2027 | Google Calendar |
| June 30 | T2 corporate return and Ontario annual return — December 31 year-ends Six months after year-end for the T2 and for the Ontario annual return filed through the Ontario Business Registry. The tax itself was due in February or March. Other year-ends: use the Deadline tools page on ghayurtax.com. | Corporations with a December 31 year-end | Jun 30, 2027 | Google Calendar |
Payroll & HST/GST Subscribe to this calendar
Employers and HST registrants.
| When | Deadline | Who it applies to | Next | Add |
|---|---|---|---|---|
| 15th of every month | Payroll source deductions due (regular remitters) CPP, EI and income tax withheld in the previous month. Quarterly remitters pay on April 15, July 15, October 15 and January 15. Accelerated remitters have earlier dates. | Employers remitting monthly | Oct 15, 2026 | Google Calendar |
| Jan, Apr, Jul, Oct — last day | HST/GST return and payment — quarterly filers One month after the end of each calendar quarter. Annual filers who owed more than $3,000 last year pay quarterly instalments on the same dates. | Quarterly filers on calendar quarters; annual filers' instalments | Oct 31, 2026 | Google Calendar |
| Jan, Apr, Jul, Oct — last day | WSIB premiums and reporting — quarterly reporters Report insurable earnings and pay premiums by the end of the month after each quarter. | Ontario employers reporting to WSIB quarterly | Oct 31, 2026 | Google Calendar |
| March 31 | HST/GST annual return and payment — corporations with a December 31 year-end Three months after the fiscal year-end for annual filers. Other year-ends: use the Deadline tools page on ghayurtax.com. | Corporations filing HST annually | Mar 31, 2027 | Google Calendar |
| April 30 | HST/GST payment due — self-employed annual filers The payment is due April 30 even though the return is not due until June 15. | Sole proprietors filing HST annually with a December 31 year-end | Apr 30, 2027 | Google Calendar |
| June 15 | HST/GST annual return — self-employed annual filers The return is due June 15; the payment was due April 30. | Sole proprietors filing HST annually with a December 31 year-end | Jun 15, 2027 | Google Calendar |
Childcare funding (CWELCC) Subscribe to this calendar
Licensed childcare centres — Peel dates; Halton and Toronto differ.
| When | Deadline | Who it applies to | Next | Add |
|---|---|---|---|---|
| September 30 | Third-quarter spending check against your allocation Last realistic point to change staffing, professional learning and eligible purchases before year-end. | All CWELCC centres (recommended) | Sep 30, 2026 | Google Calendar |
| December 31 | Last day this year's eligible costs count Unspent allocation is recovered at reconciliation. Professional learning budgets and planned eligible purchases must be spent and documented by today. | All CWELCC centres | Dec 31, 2026 | Google Calendar |
| January 30 | Planning time and professional learning notices to staff (Peel) Tell staff in writing how planning time (four paid hours a month) and professional learning (up to $500 per full-time equivalent) will work this year. Proof goes to the Region by February 13. Halton and Toronto set their own dates. | CWELCC centres in Peel | Jan 30, 2027 | Google Calendar |
| February 13 | Proof of planning time and professional learning to Peel Region Submit the staff communication and plan to the Region. | CWELCC centres in Peel | Feb 13, 2027 | Google Calendar |
| February last day | T4s reconciled to GOF, WEG and WCF enhancements Wage enhancements must be shown separately on pay stubs and agree with the funding reports and the T4s filed today. | All CWELCC centres | Feb 28, 2027 | Google Calendar |
| April 30 | Audited financial statements and FAIR due to Peel Region Toronto: audited statements within four months of year-end, plus the Standardized Financial Reports on the City's schedule. Halton: check the Region's guideline. | CWELCC centres in Peel | Apr 30, 2027 | Google Calendar |
| June 30 | Half-year spending check against your allocation Compare actual eligible spending and base-fee revenue to the allocation while there is time to adjust. Unspent allocation and ineligible costs are recovered at reconciliation. | All CWELCC centres (recommended) | Jun 30, 2027 | Google Calendar |
Not on this list?
Corporate instalments, non-December year-ends, monthly HST filers and accelerated payroll remitters have dates of their own. Use the Deadline tools page, or call 647-870-8498 and we'll tell you yours.
These are the common dates, not a complete list of every filing obligation. General information, not advice for your situation.
Rather we tracked these for you?
That's what year-round bookkeeping and tax with GATS is for. Call 647-870-8498.