Introduction

For many Canadian tech companies, the US market is the natural next step after establishing Canadian traction. Revenue from US customers, US-based employees or contractors, and US marketing operations are all common early steps in a cross-border expansion. Each of these steps has Canadian and US tax implications that, if not understood in advance, can create compliance problems on both sides of the border.

The Permanent Establishment Question

Under the Canada-US Tax Convention (the tax treaty), a Canadian corporation is subject to US income tax only if it has a "permanent establishment" (PE) in the United States. The PE concept determines whether the US has the right to tax the Canadian company's US-source income.

A PE can be created in several ways:

A fixed place of business: An office, warehouse, or other location where the company conducts business. A Canadian tech company that opens a US office — even a small one — has a PE in the US.

Dependent agents: Employees or agents in the US who habitually exercise authority to conclude contracts on behalf of the company can create a PE, even without a fixed office. A US-based sales employee who closes deals on behalf of the Canadian parent may create a PE.

Server presence: The CRA and the IRS have taken the position that in most cases, a server alone does not create a PE. However, the specifics depend on the treaty and the nature of the server's use.

Once a PE is established in the US, the Canadian company must file a US federal income tax return (Form 1120-F) and potentially state income tax returns in the states where it operates. The US taxes the income attributable to the PE under US tax rules.

Transfer Pricing: Transactions Between Related Entities

Where a Canadian company establishes a US subsidiary or affiliate (a US entity that is related to the Canadian parent), the transactions between the two entities must be priced at arm's length — as if they were dealing with an unrelated party. This is transfer pricing.

Transfer pricing applies to intercompany service fees, royalties for the use of intellectual property, loans between related entities, and any other transactions where the price could be set to shift income from a higher-tax jurisdiction to a lower-tax jurisdiction.

Both the CRA and the IRS scrutinise related-party transactions. A Canadian tech company that charges its US subsidiary a high management fee (reducing US income and increasing Canadian income) must be able to document that the fee reflects what would be charged to an arm's-length party for the same services.

Canadian CCPC Status and US Operations

A Canadian tech company that is a CCPC enjoys significant tax advantages in Canada — the SR&ED credit, the small business deduction, and the potential LCGE on a future exit. As US operations expand, particularly if US investors or US employees hold shares or options, the CCPC status of the Canadian parent may be affected.

Where a US resident controls a Canadian corporation (or a group of US residents collectively controls it through related share arrangements), the corporation may lose CCPC status — with the consequences described in Article A9.

US Sales Tax: A Separate Obligation

In addition to income tax, US sales tax (technically "sales and use tax") may apply to the sale of software products or SaaS services to US customers, depending on the state and the nature of the product. Following the Supreme Court's 2018 Wayfair decision, economic nexus rules mean that a Canadian company selling significant volumes to customers in a US state may have sales tax collection and remittance obligations in that state — even without a physical presence.

US sales tax compliance is a US obligation, not a Canadian one — but it is a real operational requirement for tech companies with US revenue.

Canadian Withholding Tax on Payments to US Recipients

When a Canadian corporation pays certain amounts to non-residents — dividends, interest, royalties, and management fees — Canada may impose withholding tax on those payments. Under the Canada-US Tax Convention, reduced withholding rates apply on most types of payments between Canadian and US entities. The withholding rate on dividends is generally 5% for corporate shareholders owning at least 10% of the voting shares; 15% otherwise. Royalties are generally withheld at 10%.

Canadian companies making cross-border payments must register the obligation, withhold the correct amount, and remit it to the CRA — regardless of whether the payment is between related parties.

When to Speak With a CPA

Cross-border expansion is an area where engaging a CPA before the first US employee is hired or the first US entity is formed produces significantly better outcomes than structuring retroactively. The permanent establishment exposure, the US filing obligations, and the CCPC status considerations all have solutions — but they are easier to implement when designed from the outset.

Rotaru CPA works with Canadian tech companies on cross-border structure and the Canadian tax implications of US expansion. Book a consultation to discuss your expansion plan.