GST/HST in Canada Explained: Registration, Filing and Common Mistakes

What Is GST/HST?

The Goods and Services Tax (GST) and Harmonised Sales Tax (HST) are Canada’s federal consumption taxes, governed by the Excise Tax Act (ETA). They apply to the supply of most goods and services in Canada — collected by businesses on behalf of the government and remitted to the Canada Revenue Agency.

GST/HST is a value-added tax (VAT) — meaning it is designed to tax final consumption rather than intermediate business transactions. Businesses collect GST/HST on taxable supplies they make to customers, and recover the GST/HST they pay on their own business inputs through Input Tax Credits (ITCs). The net amount — tax collected minus ITCs — is remitted to CRA.

For most Canadian businesses, GST/HST is a pass-through: the burden ultimately falls on the end consumer, not the business. But the compliance obligations — registration, filing, ITC tracking, and remittance — fall squarely on the business. Errors in any of these areas attract penalties and interest assessed against the business, not the consumer.

GST vs HST: Which Applies in Your Province?

Canada’s consumption tax system operates differently depending on where business is conducted. Some provinces have harmonised their provincial sales tax with the federal GST to create a single Harmonised Sales Tax (HST), administered by CRA. Others maintain a separate provincial sales tax (PST) alongside the federal GST.

Current GST/HST Rates by Province (2026)

Province / Territory	Tax Type	Rate
Ontario	HST	13%
Nova Scotia	HST	15%
New Brunswick	HST	15%
Newfoundland and Labrador	HST	15%
Prince Edward Island	HST	15%
British Columbia	GST + PST	5% GST + 7% PST
Alberta	GST only	5%
Saskatchewan	GST + PST	5% GST + 6% PST
Manitoba	GST + RST	5% GST + 7% RST
Quebec	GST + QST	5% GST + 9.975% QST
Yukon	GST only	5%
Northwest Territories	GST only	5%
Nunavut	GST only	5%

In HST provinces, businesses collect and remit the single combined rate to CRA. In GST + PST/RST provinces, businesses collect and remit the federal GST to CRA and the provincial tax to the relevant provincial authority separately. Quebec’s QST is administered by Revenu Québec — entirely separate from CRA — and is covered in detail later in this article.

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Who Must Register for GST/HST?

The Mandatory Registration Threshold

A business must register for GST/HST when its total taxable supplies — including zero-rated supplies but excluding exempt supplies — exceed $30,000 in a single calendar quarter or in four consecutive calendar quarters.

This threshold applies per legal entity — each registered business has its own $30,000 threshold regardless of affiliation with other corporations. Unlike the income tax small business deduction limit, the GST/HST small supplier threshold is not aggregated across associated entities.

The “Small Supplier” Exemption

A business below the $30,000 threshold is a “small supplier” and is not required to register. However, registration becomes mandatory in the quarter immediately after the quarter in which the $30,000 threshold is exceeded — at which point the business must begin charging GST/HST on all taxable supplies from that point forward.

Critically, a business that exceeds the threshold in a single quarter must register immediately — without waiting for the four-quarter test to complete.

Who Is Always Required to Register (No Threshold Applies)

Certain businesses must register regardless of revenue level:

• Non-resident businesses supplying taxable goods or services in Canada
• Taxi and ride-sharing operators — registration is mandatory from the first dollar of supply
• Public service bodies in some circumstances

Excluded from the $30,000 Calculation

The following are excluded when calculating whether the threshold is met:

• Exempt supplies — financial services, residential rent, medical services, most educational services
• Supplies of capital property
• Goodwill on the sale of a business

For MSBs, this exclusion is critical: because most core MSB services are exempt financial services, they do not count toward the $30,000 registration threshold. An MSB whose entire revenue comes from exempt financial services may never be required to register — unless it also provides taxable ancillary services.

Voluntary Registration: When It Makes Sense

A business below the $30,000 threshold — or one whose supplies are entirely exempt — may choose to register for GST/HST voluntarily. This is beneficial when the business pays significant amounts of GST/HST on its own inputs (rent, equipment, professional services, IT infrastructure) and wants to recover those amounts through ITCs.

For MSBs providing exempt financial services, voluntary registration has a counterintuitive dynamic:

• By registering, the MSB becomes entitled to claim ITCs on inputs used in the course of its commercial activities
• However, inputs used to make exempt supplies do not give rise to ITCs — even for a registered business
• If the MSB’s only activities are exempt financial services, voluntary registration provides no ITC benefit and creates unnecessary compliance obligations

Where the MSB has some taxable activities — even ancillary ones — voluntary registration allows ITC recovery on inputs that relate to those taxable activities. The analysis must be conducted supply-by-supply.

How to Register for GST/HST

Registration Methods

Businesses can register for GST/HST through:

1. CRA’s My Business Account (online) — fastest method; the GST/HST account (RT program account) is typically activated within a few business days
2. Business Registration Online (BRO) — available for new businesses registering for a Business Number simultaneously
3. By phone — calling CRA’s Business Enquiries line
4. By mail or fax — using Form RC1 (Request for a Business Number and Certain Program Accounts)

Information Required for Registration

• Legal name and business structure
• Business Number (BN) — or request one simultaneously
• Fiscal year-end
• Description of business activities
• Date the business became (or expects to become) a registrant
• Estimated annual taxable supplies

Effective Date of Registration

The effective date of registration can be:

• The date registration was required (mandatory registrants — this date is fixed by the threshold crossing)
• The date of application (voluntary registrants — can generally choose any date)
• A past date — CRA may allow backdating in some circumstances

For mandatory registrants who are late registering, the effective date should be set to when registration was first required — meaning all taxable supplies made since that date are subject to GST/HST and may need to be retroactively remitted.

Zero-Rated vs Exempt Supplies: A Critical Distinction

This distinction is one of the most practically important in the entire GST/HST system — and one of the most frequently confused.

Zero-Rated Supplies

A zero-rated supply is taxable — but at a rate of 0%. The critical implication: the supplier charges no GST/HST on the supply, but can claim ITCs on inputs used to make the zero-rated supply.

Common zero-rated supplies include:

• Basic groceries (most food for human consumption)
• Prescription drugs and medical devices
• Most exports of goods and services
• International transportation
• Financial services supplied to non-residents in some circumstances

Exempt Supplies

An exempt supply is not subject to GST/HST at all — but the supplier cannot claim ITCs on inputs used to make the exempt supply. This is the fundamental difference from zero-rated:

Feature	Zero-Rated	Exempt
GST/HST charged to customer	No (0%)	No
ITC available on related inputs	Yes	No
Counts toward $30,000 registration threshold	Yes	No
Examples	Exports, basic groceries	Financial services, residential rent, healthcare

For businesses that make primarily exempt supplies — particularly MSBs and other financial services companies — the inability to claim ITCs on inputs is a significant embedded cost. GST/HST paid on office rent, professional fees, IT infrastructure, and other inputs used to make exempt supplies is a permanent cost to the business, not a recoverable credit.

GST/HST and Financial Services: The Exemption Explained

The Statutory Framework

Under Part VII of Schedule V to the ETA, the supply of a financial service is exempt from GST/HST. The definition of “financial service” in section 123(1) of the ETA is a detailed, exhaustive list — not a general principle. It specifically includes:

• Exchanging, paying, issuing, receiving, or transferring money
• Lending or borrowing money
• Issuing, granting, allotting, accepting, endorsing, or transferring a financial instrument
• Underwriting a financial risk
• Arranging for any of the above

The Two-Step Test

Applying the financial services exemption requires a two-step analysis:

Step 1: Does the supply fall within the definition of “financial service” in s.123(1)?

Step 2: Does the supply fall within one of the explicit exclusions listed in s.123(1)? Excluded services — which are taxable even if they superficially resemble a financial service — include:

• Advisory, consulting, or administrative services
• Services of managing or operating an investment portfolio (in some circumstances)
• Services that are “incidental” to the financial service rather than integral to it

Applying the Test to Common MSB Services

MSB Service	Step 1: Financial Service?	Step 2: Excluded?	Net Treatment
FX spread / dealing commission	✅ Exchange of money	❌ Not excluded	Exempt
International wire transfer fee	✅ Transferring money	❌ Not excluded	Exempt
Domestic EFT / ACH fee	✅ Transferring money	❌ Not excluded	Exempt
Money order / traveller’s cheque fee	✅ Issuing a financial instrument	❌ Not excluded	Exempt
Virtual currency exchange	✅ CRA treats as financial service	❌ Not excluded	Exempt (per CRA guidance)
Platform / technology access fee	❌ Not a financial service — it is a service of providing access to a system	N/A	Taxable
Account maintenance fee (standalone)	Depends — may be administrative in nature	Potentially excluded	Taxable (likely)
Agent referral fee (for MSB activity)	Depends — “arranging for” financial service?	Potentially excluded	Requires analysis
Compliance / KYC fee	❌ Administrative service	N/A	Taxable

The “arranging for” concept is critical and has been extensively litigated. An agent or broker who arranges for a customer to receive a financial service may itself be supplying an exempt financial service — but only if the arrangement is sufficiently integral to the financial service, not merely an administrative or referral function.

Input Tax Credits: Recovering GST/HST on Business Expenses

What Are ITCs?

Input Tax Credits (ITCs) allow registered businesses to recover the GST/HST they pay on inputs used in the course of their commercial (taxable) activities. ITCs are the mechanism by which GST/HST functions as a value-added tax — each business in the supply chain recovers the tax it paid on its inputs, so that only the final consumer bears the full burden.

ITC Eligibility Rules

To claim an ITC, the following conditions must be met:

1. The business is registered for GST/HST
2. The input was acquired for use in commercial activities (taxable or zero-rated supplies)
3. The business has documentary evidence — a proper tax invoice or receipt showing the supplier’s GST/HST registration number, the amount of tax charged, and the description of the supply
4. The ITC is claimed within four years of the end of the reporting period in which the tax became payable — or within two years for businesses that qualify as “listed financial institutions” (LFIs) under section 149 of the ETA. LFI status is determined by specific enumerated categories in s.149(1) ETA — including banks, trust companies, credit unions, insurers, investment dealers, and certain other defined entities. MSBs whose principal business activities bring them within one of those enumerated categories may qualify as LFIs, making the shorter two-year window applicable. LFI status is not automatic for all financial services businesses — it requires specific confirmation against the s.149(1) categories, and MSBs should have a CPA verify whether the two-year limit applies to them.

ITC Apportionment for Mixed-Supply Businesses

Where a business makes both taxable and exempt supplies, ITCs must be apportioned — claimed only to the extent that the input relates to taxable activities.

Approved apportionment methods include:

• Direct attribution — where an input is used exclusively for taxable or exempt activities, allocate it accordingly
• A “fair and reasonable” method — the ETA requires that where direct attribution is not possible, the business use a method that produces a fair and reasonable result, consistently applied

Common apportionment bases include:

• Revenue ratio (taxable revenue ÷ total revenue)
• Transaction count ratio (taxable transactions ÷ total transactions)
• Floor space ratio (taxable activity space ÷ total space)

The method chosen must be documented, consistently applied, and supportable if challenged by CRA. Switching methods without disclosure or without CRA approval can attract penalties.

ITC Documentation Requirements

CRA requires different levels of documentation depending on the purchase amount:

Purchase Amount	Documentation Required
Under $30	Sufficient evidence that GST/HST was paid or payable — a receipt showing the total amount (from which tax can be calculated) is typically sufficient; the supplier’s registration number is not required
$30 – $149.99	Above, plus supplier’s GST/HST registration number
$150 or more	Above, plus purchaser’s name, terms of payment, quantity/description

Failure to maintain adequate ITC documentation is one of the most common causes of ITC disallowance in CRA audits. Digital records are acceptable — CRA does not require paper receipts — but the information must be complete and accessible.

GST/HST Filing: Returns, Deadlines, and Remittance

Filing Frequency

Filing frequency is determined annually by CRA based on annual taxable supplies:

Annual Taxable Supplies	Filing Frequency	Return and Remittance Deadline
Over $6 million	Monthly	Last day of following month
$1.5 million – $6 million	Quarterly	One month after end of quarter
Under $1.5 million	Annual	Three months after fiscal year-end (corporations)

CRA assigns filing frequency and notifies registrants. A business can request a more frequent filing period (e.g., monthly instead of quarterly) to accelerate ITC refunds — useful for businesses regularly in a net refund position.

Completing the GST34 Return

The GST34 (GST/HST Return for Registrants) requires reporting:

• Line 101 — Total sales and other revenue (all revenue, including exempt)
• Line 103 — Total GST/HST collected or collectible on taxable supplies
• Line 106 — Total ITCs claimed
• Line 109 — Net tax (Line 103 minus Line 106) — amount owing or refund

Electronic Filing

Businesses with annual taxable sales over $1.5 million are required to file electronically through CRA’s My Business Account or NETFILE. Below this threshold, paper filing is permitted but electronic filing is strongly encouraged.

Late Filing Penalties

Where a GST/HST return is filed late and net tax is owing:

1% of the balance owing, plus 0.25% of the balance owing for each complete month the return is late — up to 12 months

Where a return is filed late with a refund due or nil balance, no monetary penalty applies — but the failure is recorded, and CRA may increase audit scrutiny.

The Quick Method of Accounting

What Is the Quick Method?

The Quick Method is a simplified GST/HST accounting approach available to small businesses with annual taxable supplies of $400,000 or less (including GST/HST). Instead of tracking ITCs on every input, businesses using the Quick Method remit a fixed percentage of their GST/HST-inclusive revenue to CRA, retaining the difference as a built-in ITC allowance.

Quick Method Remittance Rates

Rather than specifying rates that change periodically and vary by province and HST rate, the Quick Method remittance rate is expressed as a percentage of GST/HST-inclusive revenue. For illustration, rates for service businesses in non-participating provinces (GST 5%) have historically been in the range of 3.6%, while rates in HST provinces are proportionally higher. Always confirm the current applicable rate from CRA’s Quick Method remittance rate tables before applying this method — using an incorrect rate results in either under- or over-remittance.

The Quick Method is available for businesses with annual taxable supplies of $400,000 or less (including GST/HST). The remittance rate depends on: the type of business (goods vs services), the province where supplies are made, and the applicable GST/HST rate for that province.

When the Quick Method Works Well

The Quick Method benefits businesses where the GST/HST they pay on inputs is relatively low compared to the GST/HST they collect. Service businesses — particularly those with low input costs — often retain a meaningful cash benefit.

The Quick Method is not available to:

• Financial institutions
• Charities and non-profit organisations (in some circumstances)
• Businesses that claim certain special elections
• Businesses with annual taxable supplies over $400,000

For most MSBs and regulated financial businesses, the Quick Method is unavailable — they qualify as financial institutions under the ETA and are subject to more complex GST/HST rules including the Financial Institution Rules in Part IX of the ETA.

GST/HST for Non-Residents Doing Business in Canada

When Non-Residents Must Register

A non-resident business that carries on business in Canada and makes taxable supplies in Canada is generally required to register for GST/HST — even without a physical presence in Canada — once taxable supplies exceed the $30,000 threshold.

The question of whether a non-resident “carries on business in Canada” is a facts-and-circumstances determination that considers:

• Where contracts are negotiated and signed
• Where services are performed
• Where personnel are located
• Whether the business has a permanent establishment in Canada

Digital Economy Rules

Since July 1, 2021, the ETA imposes mandatory GST/HST registration on non-resident digital businesses supplying certain digital services (streaming, software, online marketplaces) to Canadian consumers — regardless of whether they carry on business in Canada. Under these rules:

• Non-resident digital service suppliers must register if supplies to Canadian consumers exceed $30,000 annually
• Non-resident distribution platform operators must collect and remit GST/HST on behalf of suppliers using their platform

For international MSBs operating digital remittance or exchange platforms that serve Canadian customers, these rules may independently require Canadian GST/HST registration — separate from the FINTRAC registration requirement.

Common GST/HST Mistakes Canadian Businesses Make

1. Missing the Registration Threshold

Businesses frequently miss the point at which the $30,000 threshold is crossed — particularly where revenue growth is rapid and no one is monitoring the cumulative four-quarter total. The consequence is retroactive assessment for all GST/HST that should have been collected.

Fix: Monitor cumulative taxable supply revenue quarterly. Set a threshold alert at $25,000 to allow time to register before the obligation arises.

2. Treating Exempt Supplies as Zero-Rated

As discussed above, claiming ITCs on inputs used to make exempt supplies is one of the most common errors CRA finds in financial services audits. The distinction is not intuitive and requires specific technical analysis.

Fix: Map every supply to its correct GST/HST category at the point of product design — before the business begins operating.

3. Applying the Financial Services Exemption Without Analysis

MSBs and fintech companies frequently assume that all of their revenue is exempt because their core activity is a financial service. Ancillary technology fees, platform charges, and administrative services require independent analysis and are frequently taxable.

Fix: Conduct a fee-by-fee two-step ETA analysis for every revenue line. Where fees are bundled, apply dominant supply analysis or disaggregate the bundle.

4. Claiming ITCs Without Proper Documentation

ITCs disallowed for lack of documentation are a significant and entirely avoidable cost. Missing the GST/HST registration number on a supplier invoice, or failing to obtain invoices for all taxable purchases, can result in ITC denial across an entire audit period.

Fix: Implement a purchase invoice checklist ensuring every invoice over $30 includes the supplier’s registration number. Use accounting software that captures registration numbers as a mandatory field.

5. Not Filing on Time Even When No Tax Is Owing

Late filing where no net tax is owing carries no monetary penalty — but is recorded as a compliance failure, increases audit risk, and can result in CRA demanding more frequent filing in future periods.

Fix: File on time regardless of the net tax position. Set filing deadlines as fixed calendar obligations, not discretionary events.

6. Mixing Up Place of Supply Rules

The rate of GST/HST that applies to a supply depends on where the supply is made — not where the supplier is located. A business in Ontario supplying a service to a customer in Alberta should charge GST at 5%, not HST at 13%. Systematically applying the wrong rate results in either overcollecting (creating a refund obligation to customers) or undercollecting (creating a CRA liability).

Fix: Map your customer base by province and apply the correct place of supply rules to each supply type. For complex cross-provincial or cross-border supplies, obtain specific CRA advice or a ruling.

7. Ignoring the ITC Time Limit

ITCs must be claimed within four years of the end of the reporting period in which the GST/HST became payable (two years for certain financial institutions). Businesses that do not file on time — or that reconstruct years of records after the fact — frequently discover that their ITC claims are statute-barred.

Fix: Claim ITCs in the reporting period in which the related expense is incurred — don’t accumulate unclaimed ITCs to claim in a future period.

8. Failing to Account for QST Separately

Businesses operating in Quebec must register for QST with Revenu Québec and file QST returns separately from federal GST returns. Many businesses operating nationally treat Quebec the same as other provinces and fail to register for QST — creating a retroactive QST assessment exposure.

Fix: Assess QST registration obligations separately from GST/HST. For businesses supplying goods or services to Quebec customers, QST is a separate and parallel obligation.

Quebec Sales Tax (QST): The Parallel System

QST: The Basics

The Quebec Sales Tax (QST) is Quebec’s provincial sales tax, administered by Revenu Québec — entirely separately from the federal GST administered by CRA. The QST rate is 9.975%, applied on the GST-inclusive price — meaning QST is calculated on the amount that already includes the 5% federal GST. The effective combined tax burden on the original pre-GST price is approximately 15.47% (5% GST + 9.975% applied to 105% of the base price), not simply the arithmetic sum of 14.975%.

QST Registration

Businesses supplying taxable goods or services in Quebec must register for QST with Revenu Québec once their taxable supplies to Quebec exceed $30,000 (the same threshold as federal GST). Registration is through Revenu Québec’s online portal — separate from CRA.

Importantly, a business can be required to register for QST even if it is not required to register for GST/HST — if, for example, its only Quebec sales exceed the threshold but its national taxable supplies are below the federal threshold. However, in practice, most businesses subject to QST will also be subject to federal GST.

QST and Financial Services

The QST treatment of financial services mirrors the federal GST/HST framework — financial services as defined under Quebec’s Act respecting the Québec sales tax are generally exempt from QST, with similar exclusions applying to administrative and advisory services. MSBs with Quebec customers should obtain specific advice on the QST characterisation of their services.

QST for Non-Residents

Since January 1, 2019, the QST system has also imposed registration obligations on certain non-residents supplying digital services to Quebec consumers — ahead of the federal digital economy rules. Non-resident businesses selling digital services to Quebec consumers must register for QST and collect it on those supplies.

How ComplyFactor Helps

ComplyFactor’s Canadian CPAs provide complete GST/HST compliance services for MSBs, PSPs, and other regulated financial businesses — covering registration analysis, supply classification, ITC apportionment, filing, and CRA audit defence.

Our GST/HST services include:

• Registration assessment — determining whether mandatory or voluntary registration is required or beneficial
• Supply classification — two-step ETA financial services analysis for every revenue line
• ITC apportionment methodology — designing and documenting a defensible mixed-supply apportionment approach
• GST/HST return preparation and filing — on time, every period
• QST compliance — separate Revenu Québec registration and filing for Quebec operations
• CRA audit defence — GST/HST audit representation, document preparation, and objection filing
• Retroactive compliance — catch-up registration, voluntary disclosures, and back-period filing for businesses that missed registration or filing obligations

Visit our Canada tax compliance and financial statements page or our Canada PSP and MSB regulatory framework page for more information.

Contact ComplyFactor to get your GST/HST position right.

FAQ

At what revenue level must a business register for GST/HST in Canada? When taxable supplies exceed $30,000 in a single calendar quarter or in four consecutive calendar quarters. Exempt supplies do not count toward this threshold.

Is GST/HST charged on financial services in Canada? No. Most financial services — including foreign exchange, wire transfers, money orders, and virtual currency exchange — are exempt from GST/HST under Part VII of Schedule V to the ETA. However, ancillary technology or administrative fees may be taxable and require separate analysis.

What is the difference between zero-rated and exempt supplies for GST/HST purposes? Both attract 0% GST/HST on the supply itself. The key difference is ITCs: suppliers of zero-rated supplies can claim ITCs on related inputs; suppliers of exempt supplies cannot.

How do I calculate my Input Tax Credits? For businesses making only taxable supplies, ITCs equal 100% of the GST/HST paid on qualifying inputs. For businesses making both taxable and exempt supplies, ITCs must be apportioned using a fair and reasonable method — typically based on revenue or transaction ratios.

What happens if I collect GST/HST but forget to remit it? Collected but unremitted GST/HST is a serious CRA liability. Penalties of 3–20% apply depending on how long remittance is delayed, plus daily compound interest. Directors can be personally liable for unremitted GST/HST under s.323 of the ETA.

Do I need to register for QST separately from GST/HST? Yes. QST is administered by Revenu Québec — entirely separate from CRA. If you supply taxable goods or services to Quebec customers and your Quebec taxable supplies exceed $30,000, you must register for QST with Revenu Québec independently of your federal GST/HST registration.

Can I file GST/HST returns electronically? Yes — and if your annual taxable sales exceed $1.5 million, electronic filing is mandatory. Below this threshold, both paper and electronic filing are permitted, though electronic filing through CRA’s My Business Account is strongly recommended.

What is the Quick Method of accounting for GST/HST? A simplified method available to small businesses with annual taxable supplies under $400,000, allowing remittance of a fixed percentage of gross revenue rather than tracking individual ITCs. Most MSBs and financial institutions are not eligible for the Quick Method.

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• Common Tax Mistakes Canadian MSBs Make
• Canada Corporate Tax Deadlines and Penalties 2026
• MSB Compliance vs Tax Compliance in Canada
• Setting Up an MSB in Canada
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