Canada GST/HST Registration 2026: The $30,000 Small-Supplier Rule, HST by Province, and PST Explained

TL;DR: You must register for Canada GST/HST with the CRA once your revenue exceeds CAD 30,000 over four consecutive calendar quarters. Federal GST is 5%; HST ranges from 13–15% in participating provinces. BC, Saskatchewan, Manitoba, and Québec each have a separate provincial sales tax you must also track.

Last updated: June 2026

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What Is Canada GST/HST and Who Must Register?

GST (Goods and Services Tax) is a federal 5% consumption tax administered by the Canada Revenue Agency (CRA). HST (Harmonized Sales Tax) combines the federal GST with a provincial component in five provinces, creating a single blended rate. Every business selling taxable supplies in Canada must register once it crosses the small-supplier threshold.

GST/HST is governed by the Excise Tax Act (R.S.C. 1985, c. E-15). As of 2026, the CRA reports approximately 3.2 million active GST/HST registrants in Canada. Failure to register when required can result in penalties of up to 25% of net tax owed, plus interest compounded daily at the CRA's prescribed rate (currently 9% for Q2 2026).

Key facts at a glance:

• Federal GST rate: 5%
• HST rates: 13% (Ontario), 15% (Nova Scotia, New Brunswick, Newfoundland & Labrador, Prince Edward Island)
• Small-supplier threshold: CAD 30,000 in taxable revenues over four consecutive calendar quarters
• Registration deadline after crossing threshold: 29 days from the day you exceed $30,000 in a single quarter, or by the end of the month following the quarter in which cumulative revenues crossed $30,000

HST vs. GST + PST: The Two-System Reality

Canada does not have a single national sales-tax system. Five provinces have harmonized their provincial tax with the federal GST into HST. Four jurisdictions levy a completely separate provincial sales tax (PST or QST) that has its own registration, filing, and remittance rules with the provincial government — not the CRA.

Province / Territory	Tax Type	Rate	Administered By
Ontario	HST	13%	CRA
Nova Scotia	HST	15%	CRA
New Brunswick	HST	15%	CRA
Newfoundland & Labrador	HST	15%	CRA
Prince Edward Island	HST	15%	CRA
British Columbia	GST 5% + PST 7%	12% combined	CRA + BC Finance
Saskatchewan	GST 5% + PST 6%	11% combined	CRA + SK Finance
Manitoba	GST 5% + RST 7%	12% combined	CRA + MB Finance
Québec	GST 5% + QST 9.975%	~14.975% combined	CRA + Revenu Québec
Alberta / Territories	GST only	5%	CRA

Sources: CRA RC4022, BC Ministry of Finance PST Bulletin, Revenu Québec IN-203 (2026 editions)

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The CAD 30,000 Small-Supplier Rule: How It Works in 2026

You are a "small supplier" — and therefore exempt from mandatory GST/HST registration — as long as your total taxable revenues (before GST/HST) do not exceed CAD 30,000 over any four consecutive calendar quarters. The moment you cross this threshold, you lose small-supplier status and must register.

The $30,000 threshold has not changed since it was set in the original Excise Tax Act; however, the CRA updated its administrative guidance in early 2026 (GST/HST Memorandum 2.2) to clarify how digital service revenues from non-resident suppliers are counted toward the threshold for Canadian-resident businesses. Approximately 600,000 Canadian small businesses operate below the threshold and choose not to register, according to Statistics Canada's 2025 Survey of Supplier Businesses.

Two ways you can cross the threshold:

1. Cumulative four-quarter test: Add up taxable revenues for the current quarter plus the three immediately preceding quarters. If the total exceeds $30,000, you must register by the end of the month following that quarter.
2. Single-quarter test: If your taxable revenues in a single calendar quarter exceed $30,000, you must register within 29 days of the day you exceeded $30,000. You must begin charging GST/HST on the very next taxable sale after crossing the limit.

What counts toward the $30,000?

• Sales of taxable and zero-rated goods and services
• Revenues from commercial activity carried on by associates (related businesses)
• Rental income from commercial property

What does NOT count?

• Exempt supplies (medical, educational, financial services)
• Sale of capital property (e.g., selling business equipment)
• Goodwill from a business sale

Practical tip: Even if you are under $30,000, you can register voluntarily. Voluntary registration lets you claim Input Tax Credits (ITCs) on business purchases — often a net financial benefit for businesses with significant suppliers who charge GST/HST.

KARR automatically tracks your rolling four-quarter taxable revenue total against the $30,000 threshold and alerts you before you cross it, giving you time to prepare invoices and configure tax rates — rather than discovering the breach during a CRA audit.

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How to Register for GST/HST with the CRA

Registering for GST/HST is straightforward once you know the threshold applies. The CRA provides three registration channels, and most businesses complete registration in under 30 minutes online.

As of 2026, the CRA processes over 85% of online GST/HST registrations within one business day, compared to 4–6 weeks for paper applications (Form RC1). Online registration is strongly recommended.

Step-by-step registration process:

1. Log in to My Business Account at canada.ca/my-cra-business-account (or register for a Business Number first via BN Online if you don't have one).
2. Select "Register for GST/HST" under the Accounts section.
3. Provide business details: legal name, operating name, business number, fiscal year-end, estimated annual revenues, and primary business activity (NAICS code).
4. Choose your reporting period: Annual (revenues under $1.5M), Quarterly (revenues $1.5M–$6M), or Monthly (revenues over $6M or voluntary).
5. Receive your GST/HST number — a 15-character identifier in the format 123456789 RT 0001.
6. Begin charging GST/HST on your next taxable sale.

Registration Method	Processing Time	Cost	Best For
My Business Account (online)	Same day – 1 business day	Free	Most businesses
Represent a Client (accountant)	Same day – 1 business day	Free	CAs filing on behalf of clients
CRA Business Window (phone: 1-800-959-5525)	Immediate (verbal confirmation)	Free	Complex situations
Paper Form RC1	4–6 weeks	Free	No online access

Source: CRA Registration Guide RC4022 (2026)

Once registered, your obligations include:

• Charging GST/HST on all taxable supplies
• Collecting HST at the correct provincial rate based on the "place of supply" rules
• Filing GST/HST returns on time (annually, quarterly, or monthly)
• Remitting net tax (GST/HST collected minus ITCs)
• Keeping records for six years (CRA Information Circular IC78-10R5)

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PST and QST: The Separate Provincial Obligations

If you sell into BC, Saskatchewan, Manitoba, or Québec, you have a second — entirely separate — sales tax obligation that is NOT handled through your CRA GST/HST registration. Each province has its own registration, threshold, filing calendar, and penalties.

Revenu Québec administers both GST and QST for Québec-based businesses — a unique arrangement that means Québec registrants file both returns with Revenu Québec rather than the CRA. Approximately 540,000 businesses are registered for QST as of the Revenu Québec 2025 Annual Report.

Provincial PST/QST registration thresholds (2026):

Province	Tax Name	Rate	Mandatory Registration Threshold	Administrator
British Columbia	PST	7%	No threshold — required if you regularly sell taxable goods/services in BC	BC Ministry of Finance
Saskatchewan	PST	6%	No threshold — required on first taxable sale	SK Ministry of Finance
Manitoba	Retail Sales Tax (RST)	7%	No threshold — required if you sell to MB customers	MB Finance
Québec	QST	9.975%	CAD 30,000 (mirrors GST threshold)	Revenu Québec

Sources: BC PST Bulletin 001, SK PST Guide, MB Bulletin No. 030, Revenu Québec IN-203 (2026)

Key differences from GST/HST:

• PST applies to the sale price before GST — it is not a value-added tax and has no input tax credit mechanism (with limited exceptions in Québec for QST ITRs).
• BC, SK, and MB PST applies based on the buyer's location, not the seller's.
• Non-resident e-commerce businesses selling digital services to BC, SK, MB, or Québec residents must register for PST/QST even without a physical presence — rules tightened significantly in 2021–2022 and remain in effect for 2026.

KARR applies the correct tax rate per province automatically on every invoice, using the place-of-supply rules. When you invoice a customer in Nova Scotia, KARR applies 15% HST; when you invoice a customer in Alberta, it applies 5% GST; when you invoice a BC customer, it flags the PST 7% obligation separately.

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Input Tax Credits (ITCs): Recovering the GST/HST You Pay

Registering for GST/HST is not just a compliance obligation — it is a financial mechanism that lets you recover the GST/HST you paid on business purchases. This recovery is called an Input Tax Credit (ITC).

For most businesses with taxable revenues between $30,000 and $400,000, ITCs represent a meaningful cash-flow benefit. Statistics Canada estimates that registered businesses collectively claim over CAD 90 billion in ITCs annually, effectively making GST/HST revenue-neutral for business-to-business transactions.

ITC eligibility rules:

• The purchase must be used at least 10% for commercial (taxable) activity
• You must hold valid supporting documentation: a tax invoice showing the supplier's GST/HST number, date, description, and amount of tax
• Claims must be made within four years (two years for large businesses with revenues over $6M)
• Capital property ITCs follow special rules under the Excise Tax Act s. 169

ITC documentation requirements by purchase size:

Purchase Amount (before tax)	Required Documentation
Under $30	Amount paid, supplier name
$30 – $149.99	Above + supplier's business name, GST/HST number, date
$150 or more	Full tax invoice with buyer's name, description, terms of payment

Source: CRA GST/HST Memorandum 8.1 — General Eligibility Rules

KARR's AI receipt OCR scans supplier invoices and automatically extracts the GST/HST number, amount, and date — populating ITC records without manual data entry. The anomaly detection flags receipts where the GST/HST number format appears invalid, reducing the risk of a CRA audit disallowance.

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Filing and Remitting GST/HST Returns in 2026

Once registered, you file GST/HST returns using CRA Form GST34-2 (paper) or electronically through My Business Account, NETFILE, or EFILE (for accountants). The filing frequency depends on your annual taxable revenues.

The CRA assessed over CAD 1.2 billion in late-filing penalties and interest for GST/HST in the 2024–25 fiscal year, making timely filing one of the most financially significant compliance actions for small businesses.

Filing frequency and due dates:

Annual Taxable Revenue	Filing Frequency	Return Due Date
Under CAD 1,500,000	Annually	3 months after fiscal year-end
CAD 1,500,000 – $6,000,000	Quarterly	1 month after quarter-end
Over CAD 6,000,000	Monthly	1 month after month-end
Any registrant (voluntary)	Monthly or Quarterly	As above

Note: Annual filers who owe more than $3,000 in net tax must make quarterly installment payments.

The Quick Method of Accounting is available to eligible small businesses (revenues under $400,000) and lets you remit a fixed percentage of gross revenues rather than tracking every ITC. Remittance rates for 2026: 3.6% on the first $30,000 of revenues for service businesses in most provinces; 1.8% for goods-resellers. The Quick Method simplifies compliance but may result in less recovery than the standard method for capital-intensive businesses.

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How KARR Handles Canadian GST/HST and PST Compliance

KARR is cloud accounting software built to handle multi-province Canadian tax obligations without requiring business owners to memorize place-of-supply rules or provincial rate tables.

Specific KARR capabilities for Canadian businesses:

• Threshold monitoring: KARR tracks your rolling four-quarter taxable revenue total and alerts you at CAD 25,000 — giving you a five-thousand-dollar warning window before mandatory registration kicks in.
• Automatic rate application: KARR applies GST, HST (at the correct provincial rate), PST, or QST based on the customer's province entered on each invoice — no manual rate lookup required.
• ITC tracking: Every supplier bill is tagged with its GST/HST component, and KARR's AI receipt OCR populates ITC records from scanned invoices.
• Return preparation: KARR generates a GST34 summary report showing Line 101 (total sales), Line 105 (GST/HST collected), Line 106 (ITCs), and net tax — ready to enter into CRA NETFILE.
• Multi-province PST tracking: Separate PST ledgers for BC, SK, MB, and QST for Québec, with independent filing calendars and remittance tracking.
• Offline-first PWA architecture: KARR works without internet — useful for business owners filing from locations with unreliable connectivity, with full sync when back online.

KARR is priced at $0 (Free), $12/month (Pro), or $29/month (Business) — significantly below the CAD 60–120/month cost of most Canadian accounting platforms with equivalent multi-province tax features.

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Frequently Asked Questions

FAQ

Q: What is the GST/HST small-supplier threshold in Canada for 2026? A: The threshold is CAD 30,000 in total taxable revenues over any four consecutive calendar quarters. This figure is set by the Excise Tax Act and has not changed for 2026. Once you exceed $30,000, you must register with the CRA and begin charging GST/HST.

Q: Do I have to register for GST/HST if I am under $30,000? A: No — you are classified as a small supplier and registration is not mandatory. However, voluntary registration is allowed and is often financially beneficial because it lets you claim Input Tax Credits on GST/HST paid to your suppliers.

Q: What happens if I exceed $30,000 in a single quarter? A: You must register within 29 days of the day your revenues exceeded $30,000 in that single quarter. You must charge GST/HST on the very next taxable sale after crossing the threshold — even before your registration number arrives.

Q: Is HST the same as GST? A: HST is a blended version of GST. In five provinces (Ontario, Nova Scotia, New Brunswick, Newfoundland & Labrador, and PEI), the provincial sales tax has been harmonized with the federal 5% GST into a single HST rate (13% or 15%). You file one return with the CRA for HST, not two separate ones.

Q: Do I need to register for PST separately from GST/HST? A: Yes. If you sell taxable goods or services to customers in BC, Saskatchewan, Manitoba, or Québec, you must register for PST (or QST in Québec) with the respective provincial government. This is entirely separate from your CRA GST/HST registration and has different forms, filing dates, and rules.

Q: Which provinces have HST in 2026? A: Five provinces have HST: Ontario (13%), Nova Scotia (15%), New Brunswick (15%), Newfoundland & Labrador (15%), and Prince Edward Island (15%). All other provinces either have GST + a separate PST, or GST only (Alberta and the territories).

Q: Can I use the Quick Method to simplify GST/HST filing? A: Yes, if your annual revenues are under CAD 400,000 you can elect the Quick Method. Instead of tracking every ITC, you remit a flat percentage of gross revenues. The rates for 2026 range from 1.8% to 8.8% depending on your business type and province. It simplifies bookkeeping but may not always minimize your tax payable.

Q: How does KARR track the $30,000 GST/HST threshold? A: KARR automatically calculates your rolling four-quarter taxable revenue total from your invoicing data and displays it on your compliance dashboard. It sends an alert when you reach CAD 25,000, giving you time to register before the mandatory threshold. KARR also applies the correct HST, PST, or QST rate per province on every invoice automatically.