Small Business Tax Obligations In Canada

Image and Link Index For Getting All Your Ducks In A Row

Published February 4, 2024  |  Updated February 21, 2026  

WHAT'S IN THIS ARTICLE
Quick Access | How Do You Start Your Day | At A Glance | CRA Rate & Limits | Registrations & Thresholds | My Obligations? | Learn The Rules: 1. Self Employed  2. Employees  3. Corporation | Compliance Deadlines | Tax Audits


CHOOSE YOUR PATH

1. I’m here for deadlines >> Jump to At-a-Glance Deadline Summary
2. I’m not sure what applies to me >> Jump to Which Obligations Apply To Me?
3. I’m behind >> Jump to Getting Caught Up (or your Yearend Rescue Guide)
4. I received a CRA letter >> Jump to Responding To A Tax Notice
5. I need to register (maybe?) with CRA >> Jump to Registrations & Thresholds

How Do You Start Your Day?

A small mindset note before we get practical

Nvidia's CEO Jensen Huang said in a commencement speech at the California Institute of Technology, "I [spend] every single morning exactly the same way. I begin each morning by doing my highest priority work first. Before I even get to work, my day is already a success. I've already completed my most important work and can dedicate my day to helping others. When people apologize for interrupting me, I always say, 'I have plenty of time.' And I do."

He concluded his speech with, "I hope you do find a craft that you want to dedicate your lifetime to perfecting, to home in the skills of your life's work." He added: "Prioritize your life. There's so many things going on, there's so many things to do, but prioritize your life. You will have time."

If bookkeeping has been living in the 'I’ll do it later' pile, try this instead ... Set aside 20 to 30 minutes at the start of your day for ONE small compliance task.

Not everything.
Just one.

Source: CNBC Ashton Jackson, Jun 15, 2024, Nvidia CEO: One of the most 'profound learnings in my life' came from a gardener—how it made me successful

Want a simple plan you can follow?
Try my 30-day CRA admin reset. Week-by-week catch-up, then a regular maintenance routine. I'll introduce to Money Mondays and Treasury Thursdays.

Go to >> 30-day CRA admin reset

If you are unsure which of these applies to you, use the quick chooser below.

Behind this year?
If you need to file but your books are not up to date, start here: A RESCUE GUIDE on how to get organized for tax preparation if you haven't done yours books all year.

Registrations And Thresholds (Quick Summary)

Use this if you are wondering, “Do I need to register for anything with CRA yet?”

🦆 Note: This table is just a sorter … the linked pages are where I keep the details up to date. CRA reminders are generally delivered online now. A notice delivered in the CRA portal even if you did not read it in your online mail. Do not wait for an email alert. Build a habit … check your CRA 'Mail' regularly and calendar your due dates.

Which Obligations Apply To Me? (60-second chooser)

If you are not sure where to start, answer these quickly. Most people only trigger a couple.

1) Did you earn business income personally (not incorporated)?
Yes >> Start with: Self-employed obligations (T1 and T2125)

2) Is your business incorporated?
Yes >> Start with: Corporate obligations (T2 and corporate record keeping)

3) Do you have employees, even part-time?
Yes >> You likely have: Payroll remittances and year-end slips (PD7A, T4, taxable benefits)

4) Are you registered for GST/HST, or did you pass $30,000 in taxable sales?
Yes or not sure >> You likely have: GST/HST registration and filing obligations

If you are thinking, “I still don’t know what I am”, start here:
Home-Based Business and Taxes Q&A

Learning The Rules (Article Index)

When CRA reviews a file, they tend to focus on a few predictable areas. The best way to reduce stress is to understand the rules in the areas that apply to you.

I’ve grouped the key articles into three small 'libraries' so you can learn a little at a time.

Self- Employed Tax Deductions 
Learning The Rules

These are the topics that most often affect sole proprietors and freelancers.

Payroll & Employees
Learning The Rules

If you pay anyone through payroll, even casually, you need to understand what becomes taxable to the employee.

Incorporated Tax Compliance
Learning The Rules

Incorporation adds a second taxpayer and a second set of records. It is manageable, but only if you keep the paperwork steady.

This section is the longer reference list. If you are here for a quick stop, you can ignore this until you need it.

1. Tax Event / Moving Timeline

Correcting a Return for Errors or Omissions

• 10 years after the end of the adjusted taxation year

Tax Court Appeals

• No later than 90 days from mailing date of Notice of Reassessment or confirmation of assessment 
• No earlier than 90 days following mailing date of Notice of Objection (if CRA has not responded)

Collections - Tax Owing

• 10 years from date of assessment
• Debt collection is suspended when a Notice of Objection or an appeal has been made

Objection to a Notice of Assessment or Reassessment

• In general, 90 days from mailing date of notice ... individuals 1 year from due date of return

GST/HST Refunds

• 4 years from the end of reporting period due date if you have filed all returns for all your business accounts
• A refund will be used automatically to offset other debts owing instead of being paid out
  

CRA Income Tax Refunds

• In general, 3 years from end of relevant tax year ... EI 3 years; CPP 4 years; individuals 10 years for Federal, Ontario and Quebec
• If due to loss carryback, extended to 6 years ... 7 years if the corporation is not a CCPC
• A refund will be used automatically to offset other debts owing instead of being paid out

Make sure you discuss your small business tax situation with a professional who can give you advice tailored to your specific circumstances.

Source: CRA Website

2. Current Tax Season Deadlines (Reference Table)

If any of the following deadline dates falls on a weekend or holiday, it moves to the first business day following.

More >> Small business tax compliance notes on installments, payment deadlines, and annual indexation adjustments for personal income tax and benefit amounts.

3. U.S. Tax Deadlines That Affect Canadians

*Beginning in 2017 (for the 2016 tax year), US citizens residing outside of the US, had new FBAR deadlines. 1040 filing deadline is April 15. You are given an automatic extension time to file by June 15 (not available to US citizens living in the US) and an extended deadline of October 15 if Form 4868 is filed. See Bakertilly (formerly Collins Barrow) for more information. 

4. Benefits and Interest Date Reminders

*CWB (Canada Workers Benefit) advance payments was replaced in July 2023 with automatic advance payments based on the prior year's tax return. It is also referred to ACWB (Advanced Canada Workers Benefit). It was formerly called WITB (Working Income Tax Benefit) which applied to tax years prior to 2019.

Benefits payment schedule:

• CCB payments are made by direct deposit or cheque around the 20th of each month.
• OAS & GIS benefit payments are made monthly typically the last week of each month. Both are tied to CPI (consumer price index) meaning the amount is reviewed each quarter. Payments increase if inflation is up. If there is no change in CPI or it drops, then there is no indexing.
• CPP benefit payments are made monthly typically around the third to last business day of the month. They are tied to the CPI index. Unlike OAS & GIS, the rate increases are calculated once a year and applied in January. Payments increase if inflation is up. If there is no change in CPI or it drops, then there is no indexing.
• GST credits are made quarterly on the 5th of July, October, January and April.
  🦆 Duck Note: On January 26th, 2026 the Carney government announced it will temporarily increase the GST credit by 25% for five years beginning with the new benefit year (July). Those eligible will also receive a one time 50% top up in June. The GST credit will also be renamed the Canada Groceries and Essentials Benefit.
  
• CCR (Climate carbon rebate) payments are made quarterly on the 15th of April, July, October and January if you file your T1 on or before March 15th.
  🦆 Duck Note: The Carney government stopped the carbon tax on fuel on March 15, 2025. Therefore the CCR will be ending with the final payment made on April 22, 2025. For clarity, there will no more CCR payments made after the April 22, 2025 payment.
  
• Automatic, advance CWB refundable tax credit payments are made on July 28th, and the 12th of October and January based on the prior year and automatically provide advance payments equal to 50% of the CWB credit. To receive CWB you need to file your T1. Advances that exceed the entitlement for the current year will not have to be repaid.

5. CRA reviews and tax audits

If CRA contacts you, it is usually one of these:

• a matching review (slips and reported amounts)
• a desk review (requests for support for a few items)
• a field audit (more comprehensive)

The best way to make any of these go smoothly is boring, steady record keeping:

• keep source documents
• keep a mileage log if you claim vehicle expenses
• keep your books up to date
• answer CRA by the deadline, even if your answer is 'I need more time'

Related reading

• CRA Tax Audit Notices
• Oops tax mistake! T2125 Auditor Looks for These Mistake

Next Step

Perhaps, just perhaps, for this year, you can prioritize getting all your ducks in a row with regards your small business tax obligations. Set aside time (maybe 30 minutes) at the start of each day instead of at night when you are tired to work on your compliance obligations (unless of course you are a night owl).

This isn't about getting everything perfect. It's about taking one small step today toward CRA-compliant books. Just one.

Stuck in a line up? Maybe read just one of these articles to learn the rules. Why?

To help reduce the likelihood of a government audit or to increase the odds of an audit going smoothly, you need to know the rules. There are penalties if you break the rules.

If you only do one thing today, do this ... put the next three deadlines that apply to you into your calendar with reminders.

Then tomorrow, do one more small thing.

Consistency beats perfection.

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