HST for Non-Resident Businesses Selling Into Ontario

A business doesn't need a Canadian office, a Canadian bank account, or a single Canadian employee to end up with Canadian tax obligations. If you're based outside Canada and selling goods, services, or digital products to customers in Ontario, non-resident HST registration may apply to you sooner than you'd expect — and it's a question that has nothing to do with where you're incorporated.

This confuses a lot of foreign businesses, because income tax residency and GST/HST obligations run on different tracks. A company can have zero Canadian corporate tax exposure and still be required to register, collect, and remit GST/HST on sales made to Canadian customers.

This article walks through how CRA thinks about "carrying on business" in Canada for GST/HST purposes, and what a non-resident seller needs to check before pricing a Canadian customer.

Why "Non-Resident" Doesn't Mean "No HST Obligations"

GST/HST registration obligations turn on whether you are "carrying on business in Canada" for tax purposes — a concept the CRA and the courts interpret broadly, and separately from corporate income tax residency. A foreign company can be carrying on business in Canada (and therefore subject to registration rules) through factors like where contracts are concluded, where a warehouse or inventory is located, whether Canadian agents or representatives act on the company's behalf, and how the business advertises and takes payment from Canadian customers. There is no single bright-line test — it is assessed on the whole pattern of a business's activity.

The Small-Supplier Threshold

Below a certain amount of worldwide taxable revenue, a business is treated as a "small supplier" and is not required to register for GST/HST, though it can register voluntarily. That threshold figure is set by statute and could change, so don't rely on a number you've seen quoted casually — verify the current threshold directly with the CRA or a tax professional before deciding your business falls under it. Sales made through a marketplace, and sales of digital products, generally still count toward this calculation even if a platform is involved in collecting payment.

Two Paths to Registration

Once a non-resident business crosses the threshold (or chooses to register voluntarily), it typically has more than one registration option available:

1. Standard GST/HST registration — available to a non-resident business, and it allows the business to claim input tax credits for GST/HST paid on its own Canadian business inputs.
2. A simplified registration track — designed for non-resident suppliers, particularly of digital products and services, who have no physical presence in Canada. This track is generally faster to set up but does not allow the registrant to claim input tax credits.

Which track makes sense depends on the nature of what you're selling, whether you have any Canadian costs worth claiming credits on, and how your pricing is structured. This is a decision worth making with a tax professional rather than a default assumption.

What Happens if You Don't Register When Required

A non-resident business that should have registered but didn't can face CRA assessment for uncollected tax, plus penalties and interest — the same general exposure any unregistered business faces. Practically, it also creates a mess retroactively: if you weren't collecting HST from Canadian customers, absorbing an assessed liability after the fact eats directly into margin on sales you've already completed and can no longer reprice.

Practical Steps for a Foreign Business Selling Into Ontario

• Track the province of each Canadian customer, not just "Canada" as a single market — the applicable rate depends on where the customer is located.
• Monitor cumulative Canadian (and worldwide) revenue against the small-supplier threshold on an ongoing basis, not just once at launch.
• Decide early whether standard or simplified registration fits your business model, since switching later adds administrative friction.
• Build HST into your Canadian pricing and invoicing systems before volume grows, rather than retrofitting it after a CRA inquiry.
• Get Canadian tax advice before assuming your home country's tax treatment of digital sales tells you anything about your Canadian obligations — it generally doesn't.

Frequently asked questions