Sole Proprietor Taxes Canada 2026: What You Owe and When
The short answer
A sole proprietor in Canada owes three bills that no one withholds: income tax on net profit, CPP at 11.9% on most profit, and GST/HST once sales pass $30,000 in four quarters. On $75,000 net in Ontario, tax and CPP come to about $20,500, near 27% of profit.
Updated September 2026.
Nobody withholds taxes when you work for yourself in Canada. Every invoice you send is gross income, and the CRA expects you to set aside three separate bills: income tax, CPP contributions, and, once your sales cross a line, GST/HST. So what does sole proprietor taxes Canada 2026 actually mean for your wallet? The short answer: you owe income tax on your net profit, you owe CPP on nearly every dollar of that profit at 11.9%, and you owe GST/HST once your sales pass $30,000 over four quarters. Most established sole proprietors also pay in quarterly instalments: March 15, June 15, September 15, December 15. The rest of this article puts real 2026 numbers on each bucket.
Educational information, not tax advice. Tax rules change: confirm current figures at canada.ca or with a tax professional.
What are the three buckets at a glance?
| Bucket | What you owe | The 2026 number to know | When it's due |
|---|---|---|---|
| 1. Income tax | Federal + provincial tax on your net profit | First $16,452 federally tax-free; 14% on the first $58,523 | File June 15; pay by April 30 |
| 2. CPP | Pension contributions, you pay both the employer and employee halves | 11.9% of profit above $3,500, up to $8,460.90 (plus CPP2 to $832) | Calculated on Schedule 8, paid with your return |
| 3. GST/HST | Sales tax you collect from clients | Register once sales pass $30,000 over four consecutive quarters | Remitted on your assigned reporting period |
Verdict: income tax and CPP are the two bills every sole proprietor pays; GST/HST is money you collect and hold in trust for the CRA once sales cross $30,000. Three buckets, three separate piles of money, never one.
What is bucket 1: income tax on your net profit?
You are taxed on net profit, not revenue: gross income minus deductible business expenses. You report both on Form T2125, the Statement of Business or Professional Activities, which rides along with your T1 personal return. (More on the form and its deadlines below, and our Self-Employed Tax Filing Checklist Canada 2026 lists every document that backs it up.)
Federal tax for 2026 runs in slices: 14% on the first $58,523, 20.5% to $117,045, 26% to $181,440, 29% to $258,482, and 33% above that. The basic personal amount, the slice you earn federally tax-free, is $16,452. Your province adds its own layer. In Ontario, 2026 rates run 5.05% to $53,891, 9.15% to $107,785, 11.16% to $150,000, 12.16% to $220,000, and 13.16% above, with a provincial basic personal amount of $12,989.
Two things catch first-timers. First, nobody withholds anything from your invoices, so the full bill lands at once. Second, because tax is on profit, good expense records are not paperwork for its own sake, every legitimate deduction shrinks the number all of this math runs on.
Sole Proprietor Taxes Canada 2026: why CPP stings twice
This is the bucket that surprises people who used to be employees. An employee pays 5.95% of earnings into CPP and the employer quietly matches it. A sole proprietor pays both halves: 11.9% of net self-employment earnings between the $3,500 basic exemption and the 2026 ceiling of $74,600. That puts the maximum 2026 CPP bill for a self-employed Canadian at $8,460.90.
Then there is CPP2, the second tier introduced in 2024. If your net earnings land between $74,600 and the second ceiling of $85,000, you owe another 8% on that slice, up to $832 for 2026. Below $74,600, CPP2 does not touch you.
You do not send CPP to anyone during the year. It is calculated on Schedule 8 and paid as part of your tax return. There is a partial offset at filing: the employer half of your base CPP contributions is deductible as a business expense. And every dollar you contribute buys future retirement pension, CPP is not a tax, even when the cheque you write makes it feel like one. If you are weighing how much to divert to retirement accounts on top of CPP, our RRSP vs TFSA framework for self-employed Canadians picks up where this section leaves off.
What is bucket 3: GST/HST and the $30,000 line?
GST/HST works differently from the other two buckets because it was never your money. You collect it from clients on top of your price, hold it apart, and remit it to the CRA. The bill that bites is the registration line: the CRA defines a small supplier as someone whose worldwide taxable sales stay at or below $30,000 in any single calendar quarter and over the last four consecutive calendar quarters. Cross that line and you must register for a GST/HST account and start charging it.
Three details matter. First, the test runs on sales, not profit, a $31,000 quarter of low-margin work triggers it just the same. Second, registering unlocks input tax credits: you can claim back the GST/HST you paid on business purchases, which is real money for anyone with material expenses. Third, you can register voluntarily below $30,000, which often makes sense once your clients are mostly businesses that expect to see HST on invoices.
The practical rule: the day you register, open a separate account (or at least a separate ledger) for tax collected. In Ontario that is 13% of every invoice. Spending it and "catching up later" is the single most common way sole proprietors dig a hole they cannot climb out of.
What is the quarterly instalment calendar?
If your net tax owing topped $3,000 in 2026 and also in either 2025 or 2024, the CRA may require you to pay by instalments, quarterly payments on account of next year's bill, the way an employer withholds from each paycheque. The due dates are March 15, June 15, September 15, and December 15. The CRA sends an instalment reminder stating the amounts; you can pay the suggested amount, last year's amount, or your own current-year estimate, whichever method leaves the smallest quarterly cheque.
This is where the three-bucket system pays for itself. If you have been moving a fixed share of every invoice into a tax account all year, each instalment date is a transfer, not a crisis.
What is the T2125, and which two deadlines confuse everyone?
Your return as a sole proprietor is a T1 with Form T2125 attached, the Statement of Business or Professional Activities, where gross income and expenses become the net profit everything else keys off. Keep invoices, receipts, a mileage log, and home-office records; the T2125 is only as good as the records behind it.
Then memorize the two dates, because they are different on purpose. Your filing deadline as a self-employed person is June 15. Your payment deadline, the day any balance owing must reach the CRA, is April 30. Interest on unpaid tax starts accruing May 1. June 15 is extra time to do the paperwork, not extra time to pay.
A worked example: $75,000 net in Ontario
Assumptions, stated plainly: Ontario resident; $75,000 net self-employment income; no other income, no RRSP contributions, no other deductions; claiming only the basic personal amounts; deducting the employer half of base CPP ($4,230) so taxable income is about $70,770; HST-taxable services with gross billings above $30,000, so GST/HST registration is mandatory. Rounded to the nearest dollar.
- CPP: 11.9% × ($74,600 − $3,500) = 11.9% × $71,100 = $8,460.90, the 2026 maximum. CPP2: 8% × ($75,000 − $74,600) = $32. CPP total: $8,493.
- Federal income tax: 14% × $58,523 = $8,193; 20.5% × $12,247 = $2,511. Gross $10,704, minus the basic personal amount credit ($16,452 × 14% = $2,303). Federal tax: $8,401.
- Ontario income tax: 5.05% × $53,891 = $2,722; 9.15% × $16,879 = $1,544. Gross $4,266, minus the Ontario basic personal amount credit ($12,989 × 5.05% = $656). Ontario tax: $3,610.
- Total income tax: $12,011. Add CPP of $8,493 and the combined bill is about $20,500, roughly 27% of net profit.
- GST/HST: 13% on $75,000 of Ontario billings is $9,750 collected from clients and held apart, pass-through money, not a cost, remitted on the assigned reporting period.
Two takeaways from those numbers. First, at this income level the CRA's instalment test is met (net tax owing well above $3,000), so those quarterly dates apply. Second, a set-aside rule of roughly 27–30% of every invoice, split across three buckets, would have this entire bill covered with room to spare. Running it by hand every quarter gets old fast, the Self-Employed Finance Center Canada spreadsheet tracks net income, CPP, and GST/HST through the year so these numbers are ready when you need them.
| Item | Amount |
|---|---|
| Net self-employment income (Ontario) | $75,000 |
| CPP total (including $32 of CPP2) | $8,493 |
| Federal income tax | $8,401 |
| Ontario income tax | $3,610 |
| Total income tax | $12,011 |
| Combined tax and CPP bill | About $20,500, roughly 27% of net profit |
| GST/HST collected on $75,000 of billings (13%, pass-through) | $9,750 |
FAQ
What taxes does a sole proprietor pay in Canada in 2026? Three buckets: income tax on your net profit (federal plus provincial, reported on Form T2125 with your T1), CPP contributions on nearly every dollar of profit at 11.9% (both the employer and employee halves), and GST/HST, sales tax you collect from clients and hold in trust, once sales cross $30,000 over four quarters.
How much CPP does a self-employed Canadian pay in 2026? You pay both halves: 11.9% of net self-employment earnings between the $3,500 basic exemption and the $74,600 ceiling, for a maximum of $8,460.90. If net earnings land between $74,600 and $85,000, CPP2 adds 8% on that slice, up to $832. CPP is calculated on Schedule 8 and paid with your return.
When do Canadian sole proprietors have to file and pay? The filing deadline for self-employed Canadians is June 15, but any balance owing must reach the CRA by April 30, interest starts accruing May 1. If your net tax owing topped $3,000 in 2026 and in either 2025 or 2024, you also pay quarterly instalments on March 15, June 15, September 15, and December 15.
When must a sole proprietor register for GST/HST? Once your worldwide taxable sales cross $30,000 in a single calendar quarter or over four consecutive calendar quarters. The test runs on sales, not profit. Registering unlocks input tax credits, you can claim back the GST/HST paid on business purchases, and you can also register voluntarily below $30,000.
How much tax does a sole proprietor pay on $75,000 net in Ontario? The article's worked example for $75,000 net in Ontario: $8,493 in CPP (including $32 of CPP2), $8,401 federal income tax, and $3,610 Ontario income tax, a combined bill of about $20,500, roughly 27% of net profit. A set-aside rule of 27–30% of every invoice, split across three buckets, covers it with room to spare.
Sources
- Canada Revenue Agency, CPP contribution rates, maximums and exemptions (2026 figures; opened and read September 2026): 2026 YMPE $74,600, $3,500 basic exemption, 5.95% employee/employer rate, self-employed 11.9% / $8,460.90 maximum, and the rule that the self-employed pay both halves as part of the personal return.
- Canada Revenue Agency, Second additional CPP (CPP2) contribution rates and maximums (2026 figures; opened and read September 2026): 2026 second ceiling $85,000, 4% employee/employer and 8% self-employed, maximums $416 / $832.
- Canada Revenue Agency, Required tax instalments for individuals (opened and read September 2026): net tax owing over $3,000 ($1,800 in Quebec) for 2026 and in either 2025 or 2024 triggers instalments; due March 15, June 15, September 15, December 15.
- Canada Revenue Agency, When to register for and start charging the GST/HST (opened and read September 2026): small-supplier definition, worldwide taxable supplies of $30,000 or less in a single calendar quarter and over the last four consecutive calendar quarters.
- Money.ca (secondary), 2026 tax changes in Canada: your quick guide (opened and read September 2026): 2026 federal brackets (14% to $58,523; 20.5% to $117,045; 26% to $181,440; 29% to $258,482; 33% above) and basic personal amount $16,452.
- TurboTax Canada (secondary), Ontario, Income Tax Brackets, Rates, & Provincial Tax Credits (opened and read September 2026): Ontario 2026 brackets (5.05% to $53,891; 9.15% to $107,785; 11.16% to $150,000; 12.16% to $220,000; 13.16% above) and Ontario basic personal amount $12,989.
- Wealthsimple (secondary), What is a T4A? Types of income, boxes, and how to report (opened and read September 2026): self-employed filing deadline June 15, balance owing due April 30, and that tax is rarely withheld from self-employment income.
- KWBLLP Accountants (secondary), T2125 Explained: A Guide For Self-Employed Canadians (opened and read September 2026): Form T2125 as the Statement of Business or Professional Activities filed with the T1; April 30 payment deadline with interest accruing from May 1.
- Wealth North (secondary), CPP Contribution Rates 2026 (opened and read September 2026): corroborates the CPP2 band (no basic exemption), the employer-half CPP1 deduction at filing, and Schedule 8 reporting for self-employed CPP.
About Kollaz, Kollaz makes smart financial tools for modern money. This article's companion is the Self-Employed Finance Center Canada spreadsheet, net self-employment income, CPP and GST/HST tracking, and T2125-ready records in one place.