Branch vs. Subsidiary in Canada: Evaluating Permanent Establishment Risks and Regulation 105 Withholdings for Foreign Entrants.

Foreign businesses entering Canada tend to focus first on customers, contracts and people. The tax architecture deserves attention at the same stage: whether the business operates as a branch or through a Canadian subsidiary, and when its activities become taxable at all. Decisions made in the first year can shape filing obligations, cash flow and repatriation for many years afterward.

When Canadian Activity Becomes Taxable

A non-resident is taxable in Canada on income from carrying on business in Canada. The domestic concept is broad and can be met by relatively limited activity, including soliciting orders or offering products for sale in Canada through an agent or employee.

Where the non-resident is resident in a country with which Canada has a tax treaty, business profits are generally taxable in Canada only if they are attributable to a permanent establishment. Typical triggers include:

• a fixed place of business, such as an office, warehouse or project site;
• employees or dependent agents who habitually conclude contracts in Canada on the business's behalf; and
• under some treaties, including the Canada–U.S. treaty, time-based rules that can create a permanent establishment through services performed in Canada.

Treaty protection does not remove every obligation. A non-resident corporation carrying on business in Canada is generally required to file a Canadian corporate return even where it claims treaty exemption, and to disclose that position. Payroll, sales tax and withholding obligations can also arise independently of income tax exposure.

Operating Through a Canadian Branch

A branch is the foreign company itself, operating in Canada. Profits attributable to the Canadian operation are taxed in Canada at corporate rates, and Canada imposes an additional branch tax on after-tax profits that are not reinvested in Canada. That tax approximates the withholding tax that would apply if a subsidiary paid a dividend, and treaties commonly reduce it.

A branch can be attractive where early losses are expected and the home jurisdiction allows them to be used against head-office income, or where the Canadian activity is limited in scope or duration. The trade-offs include:

• no legal separation between the Canadian activity and the foreign company's other assets;
• Canadian filings, audits and profit-attribution questions that involve the foreign company itself; and
• the need to support how income and expenses are allocated between head office and the branch.

Operating Through a Canadian Subsidiary

A subsidiary is a separate Canadian taxpayer, taxed on its worldwide income. The Canadian business is ring-fenced, customers and regulators generally recognize a local counterparty, and a later exit can be structured as a sale of shares.

Profits return to the parent as dividends, interest, royalties or service fees, each with different Canadian consequences. Dividends, interest, royalties and certain management fees paid to a foreign parent can attract Canadian withholding tax, which treaties often reduce or eliminate. Interest deductions on debt owed to significant non-resident shareholders and their related parties are limited by thin capitalization rules, and larger groups may also face an earnings-based limit on net interest expense. Intercompany charges must reflect arm's-length terms under Canada's transfer pricing rules, which were substantially revised by legislation enacted in 2026.

For U.S. parents, hybrid entities such as unlimited liability companies can be a corporation for Canadian purposes while being treated as fiscally transparent for U.S. purposes. The Canada–U.S. treaty contains specific rules that can deny treaty benefits on certain payments involving hybrid entities, and Canada's own hybrid mismatch rules may also apply. The structure needs to be designed with both systems in view.

Withholding on Services Rendered in Canada

A separate regime catches many foreign entrants before any structure is in place. Payers must withhold 15% from fees, commissions and other amounts paid to non-residents for services rendered in Canada, other than employment income. Quebec requires an additional 9% withholding for services rendered in that province.

The withholding applies whether or not the non-resident will ultimately owe Canadian tax. It is a payment on account, recoverable only by filing a Canadian return, which creates a cash-flow cost and an administrative burden for the service provider. A payer that fails to withhold can be liable for the amount that should have been withheld, together with penalties and interest.

Several practical points follow:

• Waivers. A non-resident can apply to the CRA for a waiver, either because treaty protection applies or because 15% exceeds the tax expected on its net income. The CRA asks for applications at least 30 days before services begin or payment is made.
• Reimbursed costs. The CRA's position on reimbursed subcontractor fees has changed in recent years, with transitional relief extended more than once. The current position should be confirmed before relying on it.
• Reporting. Payers report amounts paid and withheld on T4A-NR slips.
• Process changes. Legislation enacted in 2026 gives the CRA authority to waive the withholding for qualifying non-residents over a specified period, and the CRA has announced changes intended to simplify the waiver process. The practical details continue to evolve.

Choosing the Structure

No single model suits every entrant. The comparison typically turns on expected profitability in the early years, the planned scale and duration of the Canadian business, how and when profits will be repatriated, liability considerations and the eventual exit. Converting a branch into a subsidiary later is possible, but the conversion carries its own tax consequences in both countries and should be modeled at the outset.

Effective entry structures are designed around the actual operating model: where people work, who signs contracts and how customers are served. Reviewing those facts before the first Canadian contract is signed allows the structure, the withholding position and the filing profile to be aligned from the beginning.

This brief provides general information and is not advice for a specific situation.