Sole Proprietor vs Corporation in Canada: When to Incorporate (2026)

Short answer: In the sole proprietor vs corporation choice, the tax gap is the headline. As a sole proprietor, all your profit is personal income, taxed federally at 14% to 33% in 2026 plus provincial tax. A Canadian-controlled private corporation pays 9% federal tax on its first $500,000 of active business income, plus a provincial rate: 2% in Alberta, and in Ontario 3.2%, cut to 2.2% from July 1, 2026. That gap only helps on profit you leave in the company, because what you take out is taxed again personally.

The figures are for the 2026 tax year, from the Canada Revenue Agency (CRA) and the Ontario and Alberta governments, for self-employed people trading under their own name who are weighing incorporation. This is general arithmetic, not personalised advice; your answer depends on your income, spending and province, and is worth an hour with an accountant. The sole proprietor side is covered first in how to be self-employed in Canada and self-employed taxes in Canada.

What is the difference between a sole proprietor and a corporation?

A sole proprietorship is you, doing business; a corporation is a separate legal person that you own through shares and usually run as its director.

	Sole proprietor	Corporation (CCPC)
Legal status	You and the business are the same person	Separate legal entity you own
Who pays tax on profit	You, on your T1 return with Form T2125	The corporation, on its own T2 return
Tax rate on profit (2026)	Your personal rates: 14% to 33% federal, plus provincial	9% federal on the first $500,000 of active business income, plus provincial
How you get paid	You keep the profit	Salary, dividends, or both, taxed on your T1
CPP	Both halves on net self-employment income	On salary only (the corporation pays the employer half); none on dividends
Liability	Unlimited: your personal assets are exposed	Generally limited to the corporation’s assets, with exceptions
Business losses	Offset your other personal income	Stay inside the corporation

How is a sole proprietor taxed in 2026?

As a sole proprietor, your net business profit is added to your other income and taxed at personal rates in the year you earn it, whether you spend it or not.

You report the business on Form T2125 and attach it to your T1 return. These are the 2026 federal brackets, and your province or territory adds its own tax on top:

2026 taxable income	Federal rate
Up to $58,523	14%
$58,523 to $117,045	20.5%
$117,045 to $181,440	26%
$181,440 to $258,482	29%
Over $258,482	33%

You also pay both halves of the Canada Pension Plan on your net self-employment income: 11.9% up to the first ceiling plus 8% CPP2 above it, up to $9,292.90 in 2026. The full calculation is in CPP for the self-employed.

The advantage is simplicity: one return, one set of books, and a loss in a slow year can reduce tax on your other income.

What is the corporate tax rate in Canada?

For 2026, the federal rate is 9% on income that qualifies for the small business deduction and 15% on the rest, and each province adds its own lower and higher rate.

The CRA’s corporation tax rates page explains the build-up: a basic rate of 38%, 28% after the federal abatement, 15% after the general tax reduction, and 9% for a Canadian-controlled private corporation (CCPC) claiming the small business deduction. Combined with Ontario’s and Alberta’s rates:

2026 corporate rate	Small business income (first $500,000)	Other active business income
Federal only	9%	15%
Ontario, before July 1, 2026	12.2% (9% + 3.2%)	26.5% (15% + 11.5%)
Ontario, from July 1, 2026	11.2% (9% + 2.2%)	26.5% (15% + 11.5%)
Alberta	11% (9% + 2%)	23% (15% + 8%)

Ontario’s lower rate drops from 3.2% to 2.2% on July 1, 2026 under the 2026 Ontario Budget, prorated for tax years that straddle that date. Alberta administers its own corporate tax, with a 2% small business rate and 8% general rate in place since July 1, 2020. Both use a $500,000 business limit.

What is the small business deduction?

The small business deduction (SBD) is what brings a CCPC’s federal rate down to 9% on its first $500,000 of active business income each year.

Four rules decide whether you get it:

• It is for active business income. Investment income inside the company does not qualify.
• The $500,000 business limit is shared. Associated corporations, for example two companies controlled by the same person, split one limit between them. The CRA explains how relationships between corporations affect the SBD.
• Short years are prorated. A first tax year shorter than 51 weeks gets a proportionally smaller limit.
• Incorporated employees do not get it. If, without the corporation, you would simply be your one client’s employee, the CRA can treat the company as a personal services business, which loses the small business deduction and most expense deductions. Contractor vs employee in Canada explains where that line sits.

Does incorporating save tax? A worked example

Incorporating mostly defers tax rather than eliminating it: the saving is on profit you leave in the company, and it shrinks once that money is paid out to you.

Take an Ontario consultant in 2026 with $150,000 of net business profit who needs $90,000 a year to live on. Personal tax is shown at federal rates only; adding Ontario personal tax would make the sole proprietor column larger, not smaller.

The $60,000 she does not need	Sole proprietor	Corporation
Taxed as	Personal income above $90,000	Corporate small business income
$90,000 to $117,045 ($27,045 at 20.5%)	$5,544.23	–
$117,045 to $150,000 ($32,955 at 26%)	$8,568.30	–
Federal corporate tax (9% of $60,000)	–	$5,400.00
Ontario corporate tax (2.2% to 3.2%)	–	$1,320 to $1,920
Tax on the $60,000 this year	$14,112.53 + Ontario personal tax	$6,720 to $7,320

In the corporate column she pays herself the $90,000 as salary, which the corporation deducts, so roughly the same personal tax and CPP apply to that part either way. The $60,000 left behind costs at least about $6,800 less tax this year, before counting Ontario personal tax at all.

The catch comes later. When the corporation pays that money out as dividends, she pays personal tax on them, reduced by the dividend tax credit, and the system is designed so the combined tax ends up roughly where it would have been personally. The real benefit is deferral and timing: money can stay in the business, or come out in a lower-income year.

Two more trade-offs: dividends carry no CPP, so they build no CPP pension, and the tax on split income rules generally stop you paying dividends to family members who do not work in the business.

What about liability, costs and paperwork?

A corporation limits your personal liability for business debts, but it costs more to run and the protection has real gaps.

Liability. Creditors of a corporation generally cannot reach your house or savings. But lenders and landlords often ask small-company owners for a personal guarantee, your own professional negligence stays your own, and directors can be personally liable for payroll deductions and GST/HST the corporation fails to remit.

Costs. Expect a registry fee to incorporate, an annual return to keep the company active, a T2 return every year (usually prepared by an accountant), a separate bank account, and a payroll account if you pay yourself salary.

Paperwork. The corporation keeps its own books, issues its own invoices and files its own GST/HST returns under its own business number; your existing GST/HST registration does not carry over automatically.

When does incorporating pay off?

Incorporating tends to pay off when your profit is consistently well above what you need to live on and you can leave the difference in the company for years.

It is worth a serious look when:

• your profit regularly exceeds what you spend, so money would sit in the company;
• you are in the 20.5% federal bracket or higher on the slice you would leave inside;
• your work carries liability risk that insurance does not fully cover;
• you serve several clients on your own terms.

Staying a sole proprietor usually makes more sense when:

• you may make a loss in your first years, which a sole proprietor can use against other income;
• you spend everything the business earns, so there is nothing to defer;
• you work for one client on employee-like terms;
• the extra accounting cost would eat most of the saving.

Many people start as sole proprietors and incorporate once the numbers are clear. The rest of the Canadian setup, from GST/HST to deadlines, is in the Canada guides hub.

…and where does Keel fit?

Keel does not pick your structure, calculate tax or file anything with the CRA; it keeps the records either structure needs. Keel: Invoice Maker & Receipts is an iPhone app for estimates (an accepted estimate becomes the invoice in one tap), PDF invoices, receipts, expenses and business mileage, all kept under the job they belong to, plus a “who owes you” view with reminder drafts you review and send yourself. Records stay on the iPhone: no account, no bank connection, no cloud sync, and an App Store privacy label of “Data Not Collected”.

It is free with no invoice limit, and free invoices carry a small “Made with Keel” footer. Keel Lifetime is a one-time $249.99 USD purchase (the App Store shows your local price) that adds custom branding, signature, premium templates and accountant-ready exports and advanced reports, the hand-off your accountant will ask for when you weigh incorporating. Keel: Invoice Maker & Receipts on the App Store.

Frequently asked questions

Is it better to incorporate or be a sole proprietor in Canada? It depends on how much profit you can leave in the business. If you spend most of what you earn, a sole proprietorship is simpler and cheaper, and incorporating saves little because dividends are taxed when paid out. If you regularly earn well beyond your needs, the 9% federal small business rate on retained profit can defer a meaningful amount of tax.

What is the corporate tax rate in Ontario? For a CCPC’s small business income, Ontario adds 3.2% to the 9% federal rate, falling to 2.2% from July 1, 2026, so the combined rate goes from 12.2% to 11.2%, prorated for tax years that straddle the change. Income above the $500,000 business limit is taxed at Ontario’s higher rate of 11.5%, for 26.5% combined.

What is the Alberta corporate tax rate? Alberta’s small business rate is 2% and its general rate is 8%, with a $500,000 small business threshold. Combined with federal tax, that is 11% on small business income and 23% on other active business income. Alberta administers its own corporate tax, so its rules and filings sit with the Alberta government rather than the CRA.

What is the difference between a sole proprietor and a partnership? A sole proprietorship has one owner; a partnership is two or more people carrying on a business together. Neither is a separate taxpayer: each partner reports their share of the partnership’s income on their own T2125, and in a general partnership each partner can be personally liable for the business’s debts. Some partnerships also have to file a T5013 information return.

Can I switch from sole proprietor to corporation later? Yes, and many people do once their profit justifies it. The usual route is to incorporate and transfer the business’s assets to the new corporation, which can generally be done on a tax-deferred basis with the right election, so this is a step to take with an accountant. Plan the switch around new invoices, a new bank account and your GST/HST registration.

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This article is general information, not tax or legal advice. Consult a qualified accountant or lawyer before changing your business structure.