Who files GST/HST registration?

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Answer

Non-resident suppliers, platform operators and digital-service businesses whose Canadian sales cross the registration test. The obligation is decided by facts rather than by tax owing, which is why a nil position does not remove it.

The rule on who files

Non-resident suppliers, platform operators and digital-service businesses whose Canadian sales cross the registration test.

The firm’s founder at his desk in the Delhi office

When the rule breaks

Registration is about carrying on business in Canada and about the supply, not about having an office here. Whether a non-resident can recover input tax at all depends on which registration route it took — the choice is not cosmetic.

Who files GST/HST registration?
ItemAmount
Income taxed in both countriesC$139,000
Tax paid abroad (assumed 23%)C$31,970
Home tax on the same income (assumed 27%)C$37,530
Credit available (lesser of the two)C$31,970
Home tax still payableC$5,560

The credit absorbs C$31,970 and leaves C$5,560 payable at home, because the home rate on this income is the higher of the two. The balance is real cash and it is due on the home timetable, which is why instalments get raised in the first meeting.

Example figures throughout, selected to make the rule visible, with rates and thresholds assumed for the demonstration. Your actual filing uses figures confirmed with the issuing authority for your tax year.

What to do next

The full treatment — who it binds, the deadline, the penalty and the fixed fee — is on GST/HST registration — for non-residents, indirect tax. Whatever you have is enough to start the conversation, including nothing but the dates.

Reviewed for the 2025 and 2026 filing seasons by Udit Gupta, Cross-Border Tax Expert, Legal Quotient Consultants. This is general information rather than advice about your file — a short call is the way to get the second.

Where do I have to file US taxes comes into this file

The search that brings most people to this page is do I have to file US taxes. It is answered here for GST/HST registration: what creates the obligation, which filings discharge it, and the fee agreed before the work starts.

Files that look like this one

Case study 1

Choosing full registration for a digital supplier with Canadian costs

A non-resident software business was about to take the easier registration route on a supplier recommendation. It had substantial Canadian expenditure across hosting, contractors and event costs, all of it carrying sales tax the easier route would have left unrecoverable. We modelled both routes against its actual cost base and its customer mix. The engagement produced a registration on the route that preserves input tax recovery, a written comparison of the alternatives for the board, and a return process that identifies recoverable Canadian tax as costs are incurred.

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Case study 2

Deciding whether a platform or its sellers collected Canadian sales tax

A marketplace and one of its larger sellers had each assumed the other was collecting Canadian sales tax on the same supplies. We worked through the facilitation rules against the actual contract terms and the mechanics of how sales were processed, and established which party was treated as making the supply. The work produced a single agreed position, contract wording that matches it, and a corrected collection process. The seller returns were then prepared on a basis the platform own reporting supports.

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Case study 3

Establishing that a consultancy was not carrying on business in Canada

A consultancy with several Canadian clients had been told registration was inevitable because it invoiced into Canada. Its people worked from outside the country and no agreements were concluded here. We documented where the work was performed, where the agreements were made and what the clients received, then concluded that the business was not carrying on business in Canada for these purposes. The engagement produced a written position for the file, no registration, and a short set of tests the client now applies before accepting work that would change the analysis.

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Case study 4

Registering a goods supplier once title passed inside Canada

A supplier shipping goods to Canadian customers had assumed its foreign incorporation kept it outside the sales-tax system. The delivery terms it actually used passed title after importation, which placed the supply inside Canada. We mapped the flow of goods and invoices against those terms, identified the periods affected, and registered from the date the facts required. The work produced a registration consistent with the shipping terms, the outstanding periods filed, and revised delivery terms for the contracts where a different outcome had been intended.

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Case study 5

Bringing an unnecessary registration to a documented conclusion

A business had registered during a period of uncertainty and then found it had no Canadian supplies to report. Returns were still due for every period and the notices kept coming. We reconstructed the supplies actually made, established that the registration test had never been crossed, and dealt with the account and the outstanding periods together. The engagement produced the periods filed, the account resolved, and a note on the file recording the facts relied on, so the question does not have to be answered again from memory.

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Case study 6

Setting a registration date from the facts rather than from discovery

A digital-service business discovered its Canadian obligations during a customer procurement review and wanted to register from the date of that discovery. The obligation had begun earlier, when its Canadian sales crossed the registration test. We reconstructed the sales history by customer location, fixed the date the test was crossed, and registered from there. The work produced a registration dated on the facts, the intervening periods filed, and a monitoring report that tells the business where it stands against the test each quarter.

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Case study 7

Withholding Reduced by the Right Article

Dividends, interest and royalties each have their own article and their own rate, and the payer applies whichever it is satisfied of. Establishing entitlement before payment is what secures the lower rate at source.

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Case study 8

Paying a Beneficiary Who Lives Abroad

Distributions to a non-resident beneficiary carry withholding and a designation that decides its rate. Getting the designation right before the payment avoids recovering the difference through a return afterwards.

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All case studies — every published engagement in one place.

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The deduction is taken on the sale price, not the gain — which is why an NRI property sale strands cash unless the certificate is applied for before closing.

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Residency is decided on facts, not on a form — and the year you arrive or leave is the one where the largest amounts turn on the smallest details.

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GST/HST registration: further questions

Do I need to register for GST/HST with no office in Canada?

Having no office here does not settle it. Registration turns on whether the business is carrying on business in Canada and on the nature of the supply, not on premises. A non-resident supplier, a platform operator or a digital-service business can cross the registration test with nothing in Canada but customers. The analysis is done supply by supply: what is sold, where it is delivered or performed, who the customer is, and whether the platform or the underlying supplier is treated as making the sale.

We sell software subscriptions to Canadian customers, must we register?

Very possibly, and the route matters as much as the answer. Non-resident businesses supplying digital products and services into Canada are within these rules, and the platforms facilitating those sales can be brought in as well. Before anything is filed, establish who is treated as making the supply, whether your customers are consumers or registered businesses, and which registration route fits. Whether a non-resident can recover input tax at all depends on which route it took, so the decision is not a formality to be dealt with last.

Does a marketplace have to register for the sales it facilitates?

Platform operators are within these rules in their own right, not merely as a conduit for the seller. Where a platform facilitates supplies into Canada, the rules can treat the platform rather than the underlying supplier as making the supply, which moves both the registration and the collection obligation. The seller and the platform therefore need to reach the same conclusion about who collects, because a mismatch surfaces as tax charged twice or not at all. Settle it in the contract terms rather than after the first return.

Can I register voluntarily to recover Canadian GST on my costs?

Recovery of input tax is precisely why the route matters. One route is easier to operate and gives no input tax recovery; full registration is more work and opens recovery on Canadian costs. If the business has real Canadian expenditure, such as warehousing, contractors or event spend, the easier route can be the more expensive one. Model the two against the actual cost base before choosing. The choice is made once and is awkward to revisit, so it is worth an hour of arithmetic at the outset.

Does drop shipping goods into Canada create a registration obligation?

It can, because the question is about the supply rather than the seller address. Where goods reach a Canadian customer, the analysis looks at who makes the supply, where it is made, and whether the seller is carrying on business in Canada. The same shipment can sit differently depending on where title passes and who imports the goods. Set out the flow of goods, the flow of invoices and the terms of delivery, and the registration position follows from those rather than from the letterhead.

We registered but may not have needed to, what now?

An unnecessary registration is not harmless. Once registered, returns are due for every reporting period whether or not there is tax to report, and the account stays live until it is dealt with. Work back to the facts, meaning the supplies made, the customers they were made to, and whether the business is carrying on business in Canada, then establish what the correct position was and from when. Either confirm the registration and bring the returns up to date, or deal with the account. The reasoning belongs in writing.

What is an ITIN and how do I get one?

An individual taxpayer identification number, for people who have a US filing or reporting reason but cannot obtain a Social Security number — a non-resident claiming a treaty rate or a refund, a foreign spouse on a joint return, a dependant, a foreign seller of US property. You apply on Form W-7 with certified evidence of identity and foreign status, normally submitted with the return that creates the need. It is a tax number only, and it confers no immigration or work status. See ITIN applications.

When does my Canadian tax residency actually end?

On the day your residential ties are severed, which is a question of fact rather than of the date on the boarding pass. The CRA weighs the significant ties first — a dwelling available to you, a spouse or common-law partner, and dependants in Canada — then secondary ties such as licences, memberships, accounts and provincial coverage. Keeping a home available while your family stays is the pattern that most often means residency never ended at all. See departure tax on leaving Canada.

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