Calgary Tax Deadlines 2026–2027

Key Canada Revenue Agency (CRA) and Alberta dates for individuals, self-employed people, employers and corporations in Calgary, for the 2026 tax year that you file in 2027. Missing a date usually means late-filing penalties and interest, so it pays to plan ahead.

Before December 31, 2026

• Tuesday, December 15, 2026 – fourth quarterly tax instalment for individuals who pay by instalments.
• Thursday, December 31, 2026 – last day for charitable donations, FHSA contributions, RESP contributions and most tax-loss selling to count for 2026. Also the last day for many business year-end moves, such as buying equipment you need or paying owner salaries or bonuses.

January to April 2027

• 15th of each month – regular payroll source deduction remittances (CPP, EI and income tax) for the previous month are due. Your remittance schedule depends on the size of your payroll.
• Monday, March 1, 2027 – RRSP contribution deadline for the 2026 tax year.
• Monday, March 1, 2027 – T4 and T4A slips and summaries for 2026 are due to employees and the CRA. February 28 is a Sunday, so the deadline moves to the next business day.
• Monday, March 15, 2027 – first quarterly instalment for 2027.
• Wednesday, March 31, 2027 – T3 trust returns for trusts with a December 31 year end.
• Friday, April 30, 2027 – personal (T1) tax returns are due, and any balance owing for 2026 must be paid, including for self-employed people.

June to December 2027

• Tuesday, June 15, 2027 – filing deadline for self-employed individuals and their spouses or common-law partners. This is also the second quarterly instalment.
• Wednesday, September 15, 2027 – third quarterly instalment.
• Wednesday, December 15, 2027 – fourth quarterly instalment.

Corporations and GST/HST

• T2 corporate return – due six months after your fiscal year end. For a December 31, 2026 year end, that is June 30, 2027.
• Corporate tax balance – usually due two months after year end, or three months for many Canadian-controlled private corporations that claim the small business deduction.
• GST/HST returns – due one month after each monthly or quarterly reporting period. Annual filers who are individuals with business income generally file by June 15, but any GST/HST owing is due April 30.
• Alberta annual return – filed with the Alberta Corporate Registry every year around the anniversary of incorporation. Alberta mails a reminder to your registered office a month before. See our corporate registry services.

Dates that fall on a weekend or public holiday generally move to the next business day. Your own deadlines can differ, for example if you have a non-calendar fiscal year or a different remittance schedule. Check the CRA important dates page, or ask us.

Frequently asked questions

Get your taxes filed on time

Garg Accounting prepares personal tax returns, self-employed and rental property returns, payroll and T4 slips, GST/HST filings, and corporate T2 returns. See how our fees work.

Helpful guides: tax slips explained · your Notice of Assessment · home office expenses · RRSP vs FHSA · year-end tax tips · how to choose an accountant in Calgary

Garg Accounting · 4310 104 Avenue NE, Unit 3230, Calgary, AB T3J 1W5 · +1 368-995-6000 · info@gargaccounting.ca · Mon–Fri 9:00 AM–5:30 PM
Areas we serve: NW Calgary · NE Calgary · SW Calgary & Downtown · SE Calgary · Airdrie · Chestermere · Balzac & Rocky View · Cochrane · Okotoks & High River · Strathmore · Drumheller · Red Deer · Lethbridge · Medicine Hat · Edmonton · Fort McMurray · Grande Prairie · Online across Canada
Related: Personal tax filing · GST/HST filing · Bookkeeping · Incorporation · Contact
Popular services: Accounting services in Calgary · Personal tax returns · Payroll services · Bookkeeping · Corporate tax (T2)