Doing Business in Canada: Branch or Subsidiary?

• Ontario's Extra-Provincial Corporations Act classifies corporations incorporated outside Canada as Class 3 extra-provincial corporations. To carry on business in Ontario, such a corporation must obtain a licence, and it must file an initial return within 60 days after it starts doing business.
• A branch is not another company. It issues no shares, and the foreign parent company is directly liable for its contracts and bears the business risk.
• Not being legally separate doesn't mean no tax filings. A branch still has to get a Business Number (BN), open GST/HST and Payroll program accounts as needed, and file a T2 as a non-resident corporation.

2. Comparing the two structures

	Branch	Subsidiary
Legal status	The foreign parent company itself; not a separate legal entity	A separate Canadian corporation
Registration	Extra-provincial licence (e.g., Class 3 in Ontario)	Incorporated under federal or provincial corporate law
Legal liability	Borne directly by the parent company	Generally limited to the subsidiary
Canadian corporate income tax	Tax on the taxable profits attributable to the Canadian PE or Canadian business	Tax on the subsidiary's taxable profits
Second layer of tax	Part XIV branch tax, calculated annually; statutory rate 25%, can be reduced by treaty	Part XIII withholding tax, withheld when dividends are paid or credited; statutory rate 25%, can be reduced by treaty
Profits kept in Canada	Part XIV is still calculated every year, but a qualifying Canadian investment allowance may reduce the tax base	No dividends, so generally no dividend withholding tax that year
Filing	The non-resident corporation files a T2 with Schedule 97; adds Schedule 20 if Part XIV applies; if claiming a treaty exemption, Schedule 91 also needs to be considered	The subsidiary files its own T2
Small business rate	Not available	A corporation controlled by a foreign parent is generally not a CCPC, so it is not available either
Early-stage losses	May be usable where the parent is based, depending on the home country's tax law	Generally stay in the Canadian subsidiary and are carried forward
Bank accounts, signing contracts	Harder in practice	Usually easier in practice, though still subject to the bank's KYC checks

Part XIV branch tax is not a percentage withheld when money is sent home. It is calculated annually under section 219 of the Income Tax Act and Schedule 20: you start from the profits attributable to the Canadian business, deduct the related taxes, then deduct, as the rules allow, the investment in qualifying property in Canada (the investment allowance), and take into account adjustments such as balances from prior years and changes in assets. So the amount actually repatriated in a year does not necessarily match that year's amount subject to Part XIV.

3. Mainland China and Hong Kong parents: different treaty treatment

Item	Mainland China parent (Canada–China treaty)	Hong Kong parent (Canada–Hong Kong treaty)
Canadian branch tax (statutory)	25%	25%
Treaty cap on branch tax	10% (Article 10(6))	5% (Article 10(6))
How "earnings" are defined for branch tax	Profits attributable to the PE; the treaty expressly deducts losses, Canadian income tax, profits reinvested in Canada and other items	Profits attributable to the PE for the current and prior years, less taxes paid (other than branch tax), counting only the part not already subject to branch tax in prior years; the protocol states that profits reinvested, as determined under Canadian law, are excluded
Threshold before tax applies	Only cumulative earnings over C$500,000 are taxed (Article 10(7); includes the earnings of related persons carrying on the same or a similar business in Canada)	The treaty has no such threshold
Withholding tax on subsidiary dividends	10% (beneficial owner is a company holding at least 10% of the voting power); 15% otherwise	5% (beneficial owner is a company controlling at least 10% of the voting power); 15% otherwise
Anti-abuse	Conditions such as treaty residence and beneficial ownership must be met; the principal purpose test (PPT) in MLI Article 7 also applies (for Canadian withholding taxes, from 2023-01-01; for other taxes, taxable periods beginning on or after 2023-03-01)	Same as for mainland China; the anti-abuse clauses in Articles 10(7), 11(9) and 12(7) of the original treaty have been replaced by the PPT in MLI Article 7 (on the Hong Kong side, withholding taxes from 2023-04-01)

A few points to be clear about:

• The two treaties are not the same formula with a different rate. The definition of earnings and the limits are different. The actual taxable amount has to be calculated under section 219, Schedule 20 and the applicable treaty.
• The C$500,000 is a cumulative threshold, not a tax-free amount that resets every year. The earnings of related persons carrying on the same or a similar business are counted together, so you can't use it again by setting up another related branch. It is a threshold on the applicable earnings, not a revenue threshold, and not a general exemption from taxable income.
• Both treaties are subject to the MLI's PPT. If obtaining the treaty benefit was one of the principal purposes of an arrangement or transaction, and granting it would not be in line with the object and purpose of the treaty provisions, the benefit may be denied. This doesn't apply only to dividends; it can also affect treaty benefits for branch tax, interest, royalties and more. So you cannot conclude that you will definitely get 10% or 5% just because you have a certificate of incorporation from China or Hong Kong. It depends on whether the arrangement has real commercial substance. The MLI did not change Article 10(6) and (7) of the Canada–China treaty (the 10% cap and the $500,000 threshold still apply).

4. A branch and a permanent establishment (PE) are not the same thing

• If a Chinese company sends employees to carry on business in Canada over a long period, it may have a PE under Article 5 of the Canada–China treaty even without registering a branch.
• Conversely, doing business in Canada does not necessarily mean having a PE in the treaty sense. But when you claim a treaty exemption, a T2 filing obligation may still exist.
• Profit attribution. Registering a branch does not mean all of the parent's international business profits are taxed in Canada. For an enterprise protected by the treaty, the profits attributable to Canada are determined by the functions, assets and risks the PE actually has (Article 7 of the Canada–China treaty).
• Tax residence is a separate question. The foreign company behind a branch is usually a non-resident corporation. But if the company's central management and control is actually in Canada (for example, the company is in substance managed by a Canadian team), a question of Canadian tax residence may arise — you can't look only at where it is registered. If both countries treat the company as resident, then under Article 4 of the Canada–China treaty as modified by the MLI, the competent authorities of the two countries settle the question by mutual agreement, considering its place of effective management, place of incorporation and other factors. If they do not reach agreement, in principle the company cannot claim the relevant treaty relief (except to the extent the two competent authorities agree to grant it). This is complex and has to be assessed case by case.

5. A simplified calculation for a Chinese parent (Canadian side only, for illustration)

Assumptions: Canadian pre-tax profit of C$1 million; the Ontario general combined rate of 26.5% applies (not a CCPC; rates differ in other provinces); after-tax profit of $735,000 goes entirely into the second layer of tax (the subsidiary pays it all out as dividends; for the branch, it is all in the Part XIV base, with no investment allowance or other adjustments); the $500,000 cumulative threshold has not been used before; all treaty conditions are met; the Chinese parent's enterprise income tax and foreign tax credits are not considered. This is not a formal Schedule 20 calculation.

Year 1 (CAD)	Subsidiary	Branch
Canadian corporate income tax (26.5%)	265,000	265,000
After-tax profit	735,000	735,000
Second layer of tax	Dividend withholding 735,000 × 10% = 73,500	Branch tax (735,000 − 500,000) × 10% = 23,500
Total Canadian tax	338,500 (33.85%)	288,500 (28.85%)

How to read this C$50,000 difference:

• Under the simplified model above, it is a one-time difference in Canadian tax that comes from using the Canada–China treaty's $500,000 cumulative threshold in full for the first time. It is not tax that a branch saves over a subsidiary every year, and it doesn't mean a branch will necessarily have the full $735,000 in its Part XIV base that year.
• Once the cumulative threshold has been fully used, and with no other special adjustments, new applicable earnings of the branch in principle no longer benefit from the threshold, and the second-layer rate on the Canadian side is 10% for both structures.
• Hong Kong parent. Under the same assumptions, the second layer of tax for both structures is 735,000 × 5% = 36,750, for total Canadian tax of 301,750 (30.18%). This is only the result under these assumptions, not a general conclusion, and the treaty conditions, such as the PPT, must be met first.

Another scenario: profits kept in Canada and reinvested.

Scenario	Subsidiary	Branch
All of the year's profit stays in Canada for expansion	No dividends, so generally no dividend withholding tax that year	Part XIV is still calculated annually, but a qualifying Canadian investment allowance may reduce the tax base
Distributed or repatriated later	Tax is withheld at the treaty rate when dividends are paid	The tax base in later years changes with investments and balances

So it is not the case that both structures have to pay 10% or 5% second-layer tax every year. How long you plan to keep profits in Canada, and how you use them, directly changes the comparison.

The final result also depends on the home country. How China taxes the dividends or branch profits the Chinese parent receives, and how much Canadian tax it can credit, may widen, narrow or even reverse the difference. This has to be calculated case by case.

6. How to choose (initial leaning)

Business situation	Initial leaning
A Chinese company trading, selling or hiring staff in Canada over the long term	Subsidiary
A Hong Kong company operating in Canada over the long term and planning to keep profits in Canada	Subsidiary
Short-term projects, construction work or temporary business	A branch is worth evaluating
Large early-stage losses that the overseas head office wants to use	A branch is worth evaluating (depends on home-country rules)
Need to ring-fence the Canadian business and its legal liability	Subsidiary
Don't want to set up a separate legal entity and the corporate governance that comes with it	A branch is worth evaluating

7. Sheng Qian CPA's professional view

A foreign company entering the Canadian market does not have to set up a separate Canadian subsidiary. Operating directly through a branch is also a business structure recognized under Canadian law.

On the tax side, branches and subsidiaries usually both pay Canadian corporate income tax. The differences lie in the second layer of tax, the timing of profit distributions, the use of losses and treaty treatment. For a mainland Chinese parent that meets the treaty conditions, the additional tax on a Canadian branch is capped at 10%, and the parent may also benefit from a cumulative C$500,000 threshold on applicable earnings. For a Hong Kong parent, the cap is 5%, but there is no equivalent threshold. Under both treaties, the principal purpose test of the Multilateral Instrument (MLI) has to be considered.

Branch tax is not simply a percentage deducted when money is sent home; it is an annual additional tax calculated under Part XIV of the Income Tax Act and the applicable treaty.

When choosing a structure, you should also consider whether your activities in Canada create a PE, corporate income tax and foreign tax credits where the parent is based, plans to reinvest profits, the separation of legal liability, and future exit plans. For a foreign company that plans to operate in Canada over the long term, hire staff and build a local team, a Canadian subsidiary is usually the option to consider first. For particular projects, early-stage losses or special cross-border needs, a branch may have some advantages.

The most suitable structure does not depend on a single tax rate; it should be determined through a combined tax calculation for Canada and the parent's home jurisdiction, together with an assessment of business risk.

Things to watch

• Exit costs. Converting a branch into a subsidiary, closing a branch or selling the Canadian business can all raise cross-border tax issues, such as asset dispositions, income tax and Part XIV. Some transactions can use tax-deferred reorganization rules, but don't assume the conversion can be done tax-free. Think it through before you start.
• T106 and transfer pricing. A reporting person that meets the conditions and has applicable cross-border transactions with non-arm's-length non-residents usually has to file a T106 when total reportable transactions for the year exceed C$1 million (since 2022, details may be left out for a single non-resident counterparty with transactions of C$100,000 or less). Fund transfers, cost allocations and internal dealings between a branch and its head office need separate analysis for PE profit attribution and T106 reporting. You can't simply apply the treatment used between two related legal entities.
• Treaty benefits need evidence. You need to support tax residence, beneficial ownership and commercial substance, and when dividends are paid, provide the payer with documents such as Form NR301.
• This article covers only the general federal and Ontario rules. Registration requirements and tax rates are different in other provinces.