Permanent Establishment in Canada and the U.S.: A Business Owner’s Guide
Doing business across the Canada-U.S. border does not automatically mean your company owes income tax in both countries.
One of the key factors is whether your activities create a “permanent establishment” in the other country. Under the Canada-U.S. tax treaty, a permanent establishment can arise through a fixed place of business, certain activities performed by employees or agents, or other circumstances that establish a sufficient taxable presence.
For business owners expanding across the border, understanding these rules is critical because creating a permanent establishment can trigger corporate income tax, filing, and other compliance obligations in the foreign jurisdiction.
When Does Cross-Border Business Create a Permanent Establishment?
Under the Canada-U.S. tax treaty, your business profits are taxed in the other country only when you carry on business there through a permanent establishment (PE), meaning a fixed place of business, a dependent agent who signs contracts for you, a long construction project, or services that pass the 183-day tests. Without a PE, the profits stay taxable in your home country, even if you sell across the border every week.
Two separate tests apply. Domestic law decides whether you are “doing business” in the other country, and the treaty then decides whether that country can tax your profits.
How Do Domestic Business Rules Differ from the Treaty Test?
Each country’s own law sets a low bar. In the U.S., a non-resident is taxed on income “effectively connected” with a U.S. trade or business. The bar for that status is low: regular sales calls, demonstrating goods, or consulting at a client’s site can all qualify, as BDO Canada explains for Canadians selling into the U.S..
Canada works the same way. A non-resident that “carries on business in Canada” falls under Canadian tax law. The Income Tax Act’s definition is broad and can include soliciting orders in Canada.
The treaty sets a higher bar on top. Think of it as two gates:
| Step | Question | Who decides |
|---|---|---|
| 1 | Are you doing business in the other country? | Domestic law (U.S. Code or Income Tax Act) |
| 2 | Do you have a PE there? | Treaty Article V |
| 3 | Which profits can be taxed? | Treaty Article VII |
Passing gate one without passing gate two means you may owe a filing, but no income tax on business profits.
How Do Articles V and VII Limit Tax on Business Profits?
Article V defines a PE. It lists a place of management, a branch, an office, a factory, a workshop, and a mine or other place of natural resource extraction. It also covers dependent agents and the special service rules covered below.
Article VII is the taxing rule. Business profits of a resident of one country are taxable only there, unless the business operates through a PE in the other country. If a PE exists, the other country can tax only the profits that belong to that PE.
In practice, you run the Article V test first. If the answer is no, Article VII shields your business profits. If the answer is yes, Article VII limits how much the other country can reach.
Can an Office, Employee, or Agent Create a PE?
Yes. A PE can come from a physical spot you control or from people who act for you, even when you rent no space at all. A dedicated office leased for your team is the classic case, and a single salesperson who habitually signs deals in your name can create one too.
When Is a Workspace a Fixed Place of Business?
A fixed place of business is a location that is at your disposal, used with some permanence, and through which you run your business. Ownership is irrelevant. A leased suite, a shared unit you use daily, or a workshop at a client’s plant can all count.
Compare these two owners:
- Lower risk: A Toronto consultant books a New York co-working desk a few days a year when visiting clients. The space changes and you have no ongoing right to it.
- Higher risk: The same consultant signs a one-year lease on a private office in Manhattan and meets U.S. clients there each month.
Home offices are a growing grey area. Tax authorities look at whether you pay for the home office, whether the home address appears on your business materials, and whether the employee works there because you require it. If you reimburse rent for a U.S. remote worker’s dedicated office and list it on invoices, you have built facts that point toward a fixed place.
When Do an Employee’s Duties or an Agent’s Contracts Create a PE?
A person creates a PE for you when they have authority to conclude contracts in your name and habitually use that authority in the other country. Title does not decide it. The test is what the person does.
Paired example:
- No PE likely: Your Canadian sales rep attends a U.S. trade show, collects leads, and sends orders back to head office in Calgary for approval and signature.
- PE likely: The same rep negotiates prices on the floor and signs binding orders at the show every year.
That second scenario is the one BDO highlights: setting prices goes beyond quoting from a fixed list. Hiring a U.S. employee who can sign contracts often creates a PE even with no leased space.
Contract design helps, but substance wins. If your agent does all the negotiating and someone at home rubber-stamps the deal, an auditor can treat the agent as the real decision-maker.
When Do Projects and Services Trigger a PE?
Projects and services trigger a PE on time thresholds: more than 12 months for a building site or installation project, and 183 days in a 12-month period for the service rules. Counting the days carefully is the main control you have.
How Long Can a Construction or Installation Project Last?
Under Article V(3), a building site or construction or installation project is a PE only if it lasts more than 12 months. Drilling rigs or ships used to explore natural resources have a shorter clock of 3 months in any 12-month period.
- No PE: A Canadian engineering firm finishes an eight-month highway job in Ohio.
- PE: The same job runs into a 14th month because of delays.
The clock starts when work begins on site, including preparation, and it keeps running through short breaks for weather or material delays. Work by subcontractors on your project counts toward your time. The CRA has also published its views on how the construction rule interacts with the service PE rule, so a project under 12 months can still be caught by the 183-day tests if services are involved.
Splitting one contract into several smaller ones to stay under 12 months rarely works when the pieces form a single project.
How Does the 183-Day Service Rule Work?
The Canada-U.S. treaty adds a service PE test that most treaties do not have. Since January 1, 2010, two deeming rules apply:
- Individual test: One person (you or an employee) is present in the other country for 183 days or more in any 12-month period, and in that period more than 50% of your business’s gross active business revenue comes from services that person performs there.
- Project test: Your business provides services in the other country for 183 days or more in any 12-month period on the same or connected projects, for customers who are residents there or who have a PE there.
These rules make a service PE possible in a much wider set of cases than the standard office test.
Projects are “connected” when they form a coherent whole, commercially and geographically, from your point of view. A U.S. IT firm sending three staff to a Montreal client for rolling 60-day rotations on one system rollout can hit 183 days under the project test. Count days by calendar presence, and track every traveller in one shared log.
Which Cross-Border Activities Generally Do Not Create a PE?
Activities that are preparatory or support-only fall outside the PE definition, even when you have a fixed space. The exclusions protect a minor presence, so they disappear once that space starts earning revenue on its own.
When Are Storage, Research, and Other Activities Excluded?
Article V(6) lists places used only for limited purposes:
- Storing, displaying, or delivering your goods
- Keeping a stock of goods for storage, display, delivery, or processing by another business
- Buying goods or collecting information for your business
- Advertising, supplying information, or scientific research that is preparatory or auxiliary
Paired example:
- Excluded: A Winnipeg manufacturer keeps parts in a Minnesota warehouse and ships from there to U.S. customers.
- Not excluded: That warehouse adds a sales desk where staff take and approve orders.
The word “solely” carries weight. Once the space does core money-making work, the exclusion no longer covers it.
Do Independent Contractors, Websites, or Occasional Visits Create a PE?
An agent of independent status, such as a broker or commission agent acting in the ordinary course of their own business, does not create a PE for you. Independence weakens when the agent works only or mostly for you and follows your detailed instructions.
A website hosted on a third-party server is generally not a PE. Selling online to customers across the border, with no people or space there, stays outside Article V.
Short visits to meet clients, attend training, or check on a job are also fine on their own. They become a problem when they add up toward 183 days, or when the visitor signs contracts. Even without a PE, Canada requires payers to withhold 15% on payments for services provided in Canada, which you can recover by filing a return.
What Income Is Taxed When a PE Exists?
Only profits attributable to the PE are taxed in the other country. Your full cross-border revenue stays outside that tax unless the PE helped earn it.
How Are Profits Attributed to the PE?
The treaty treats the PE as if it were a separate business dealing with you at arm’s length. You assign the PE the profits it would earn based on its own functions, the assets it uses, and the risks it carries.
For example, a U.S. company with a Vancouver sales office that closes only British Columbia deals reports profits tied to that office’s work in Canada. Its sales to Ontario customers handled directly from Seattle stay outside the Canadian PE. Expenses linked to the PE, including a fair share of head office costs, are deductible against those profits.
Rates follow. In the U.S., corporate profits from a PE are taxed at 21%, and individuals pay graduated rates from 10% to 37%. A branch profits tax may also apply. Canada adds a branch tax on after-tax PE profits, which the treaty can reduce from 25% to 5% for a corporation.
How Do Foreign Tax Credits Help Prevent Double Taxation?
Your home country gives you a credit for income tax paid to the other country on the same profits. That stops the PE profits from being taxed twice in full.
U.S. businesses claim the credit on Form 1116 for individuals or Form 1118 for corporations, both listed with the IRS Publication 597 on the U.S.-Canada treaty. Canadian businesses claim a foreign tax credit under section 126 of the Income Tax Act.
The credit is capped at your home-country tax on that foreign income. If the other country’s rate is higher, the extra is lost. Keep foreign assessments and payment receipts, since you need them to support the claim.
Must You File a Return If the Treaty Prevents Income Tax?
Yes, in most cases. Both countries expect you to file and claim the treaty exemption on the return, and missing it can bring penalties even when no tax is owed.
What Should a U.S. Business Check Before Filing in Canada?
A non-resident corporation must file a T2 return if it carried on business in Canada at any time in the year. The rule applies even when the corporation claims a treaty exemption, as the CRA states on its carrying-on-business page. The T2 is due six months after your fiscal year ends.
Before filing, check:
- Whether any activity counts as carrying on business in Canada
- Schedule 91 to claim the treaty-based exemption
- Schedule 97 for non-resident corporations
- Any 15% service withholding you want refunded
- Whether you hired Canadian staff and need a payroll account
What Should a Canadian Business Check Before Filing in the U.S.?
A Canadian business with effectively connected income but no U.S. PE should still file a U.S. return and disclose the treaty position. Corporations use Form 1120-F, and individuals use Form 1040-NR.
Check these points:
- Whether your U.S. activity rises to a trade or business
- Form 8833 to disclose that your profits are not tied to a U.S. PE
- Day counts for every employee in the U.S. during the last 12 months
- Whether a protective return makes sense to keep your deductions if the IRS later finds a PE
Late filing can cost you the right to claim deductions against U.S. income, so filing on time protects you even in a no-tax year.
What Else Should Business Owners Check?
Treaty access and state or provincial rules need their own review. Passing the PE test federally does not settle your entity’s treaty eligibility or your sales tax position.
Does a U.S. LLC Qualify for Treaty Benefits?
Canada treats a U.S. LLC as a corporation, while the U.S. usually treats a single-member or multi-member LLC as transparent. Because the LLC itself is not taxed in the U.S., it does not qualify as a U.S. resident on its own.
The Fifth Protocol fixed part of this. Under Article IV(6), income earned through an LLC can get treaty benefits to the extent it is taxed in the U.S. in the hands of members who are U.S. residents. Members who are not U.S. residents get no benefit through that rule.
The branch tax shows the effect. When a U.S. LLC has a Canadian PE, the 25% branch tax may drop to 5% for corporate members but stays at 25% for individual members. Many owners switch to a U.S. C corporation or a Canadian subsidiary before expanding for this reason.
Can State, Provincial, or Sales Tax Rules Apply Without a PE?
Yes. U.S. states are not parties to the treaty and use their own nexus rules for income and franchise taxes. Many states tax based on sales volume in the state, with no office required.
Sales taxes sit outside the treaty in both countries. In Canada, a business that carries on business in Canada must register for GST/HST once its taxable sales pass $30,000 CAD over four quarters, and digital sellers face separate simplified registration. Provinces such as British Columbia, Saskatchewan, Manitoba, and Quebec run their own sales tax systems.
Provincial corporate tax follows its own PE definition under the Income Tax Regulations, which the CRA uses to allocate income among provinces. Review each state and province where you have customers, staff, or inventory before you file.
The Bottom Line
Permanent establishment rules can have significant tax consequences, and the answer is not always as simple as whether your business has a physical office across the border. Your employees, contracts, services, and day-to-day operations can all affect how Canadian and U.S. tax authorities view your business presence.
JKC Group helps cross-border businesses evaluate permanent establishment risk, understand their filing obligations, and structure their operations with tax efficiency and compliance in mind. Book a consultation with our team to discuss your cross-border business activities and get guidance tailored to your situation.