Canadian Tax Calendar 2025-2026

Look, keeping track of CRA deadlines can feel like juggling chainsaws while blindfolded. We've put together this calendar so you won't miss a beat - because penalties aren't anyone's idea of a good time.

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Filing Tax returns & reports
Payment Tax balance due dates
Installment Quarterly tax payments
Remittance Payroll & HST/GST

November 2025

Sunday Monday Tuesday Wednesday Thursday Friday Saturday
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Remembrance Day
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HST/GST Filing Payroll Remittance
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Today
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Upcoming Deadlines (Next 90 Days)

15
NOV 2025
Remittance All Businesses
HST/GST Return & Payment (Quarterly Filers)

If you're on a quarterly filing schedule, this is your deadline for Q3 (July-September). Don't wait till the last minute - CRA's online system can get cranky.

15
NOV 2025
Remittance All Businesses
Payroll Source Deductions Remittance

Regular remitters need to get those CPP, EI, and income tax deductions to CRA. The frequency depends on your remitter type - if you're not sure which one you are, give us a shout.

31
DEC 2025
Installment Corporation
Corporate Income Tax Installment

This applies if your corporation owes more than $3,000 in taxes. Missing installments means interest charges, and nobody likes those surprise bills. We can help you figure out the right amount to pay.

15
DEC 2025
Payment Sole Proprietor
Personal Tax Installment (4th Quarter)

Last installment of the year for self-employed folks. If you had a good year, don't skimp on this one - CRA calculates interest daily and it adds up faster than you'd think.

15
JAN 2026
Remittance All Businesses
HST/GST Return & Payroll Remittance

Start the new year right with your December remittances. Yeah, the holidays are hectic, but this one can't slide.

31
JAN 2026
Filing All Businesses
T4, T4A, T5 Information Returns

Get those slips filed with CRA and distributed to your employees/contractors. We see a lot of businesses scramble with this one every year - start gathering your info now and you'll be way ahead of the game.

28
FEB 2026
Filing All Businesses
T4, T4A, T5 Slips to Recipients

Distribution deadline for getting those tax slips into employees' and contractors' hands. They'll appreciate getting them early so they can file their own returns.

Important Notes About These Deadlines
  • Weekend and holiday adjustments: If a deadline falls on a Saturday, Sunday, or public holiday, you've got until the next business day. But honestly? Don't count on that extra time - submit early when you can.
  • Your fiscal year-end matters: Corporate deadlines shift based on your year-end date. What you see here assumes a December 31st year-end, but if yours is different, we should chat.
  • Late filing penalties are no joke: They start at 5% of what you owe, plus 1% for each month you're late (up to 12 months). If you've been late before, it gets even worse.
  • Electronic filing can save your bacon: CRA's systems timestamp your submission, so even if you're cutting it close at 11:59 PM, you're good. Paper filing? Not so much.
  • When in doubt, reach out: Seriously, a quick call to us can save you from a costly mistake. We'd rather help you get it right than see you dealing with CRA penalties later.

Let Us Handle the Deadlines While You Handle Your Business

Our clients don't lose sleep over tax deadlines - because we're on top of them. From automated reminders to full-service tax prep and filing, we've got your back year-round.

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