How Sales Tax Works in Canada: A Practical Guide for U.S. and Canadian Sellers

Although they share a border, the United States and Canada take very different approaches to sales tax. And if you make sales into Canada—whether you’re a Canadian e-commerce seller or a U.S. business selling cross-border—it’s critical to understand how the True North’s tax system works.

From Canada GST to HST, this guide breaks down sales tax in Canada—how it works, which taxes apply, and who must register and collect.

Canada’s Three Types of Sales Tax

Unlike the United States, Canada blends federal and provincial tax jurisdictions in a way that feels like a hybrid of value-added tax (VAT) and U.S. state-level sales tax. At its most basic level, Canada sales tax is made up of three main consumption taxes:

• GST — Goods and Services Tax
• PST — Provincial Sales Tax (including related systems like QST)
• HST — Harmonized Sales Tax (a combined GST + PST)

These taxes apply to most goods and services sold in Canada, though rates, exemptions, and compliance rules vary by province and product type. Let’s take a closer look at each.

Canada GST: The Federal Sales Tax

The Goods and Services Tax (GST) is a federal tax applied to most goods and services consumed in Canada. The current GST rate is 5% nationwide.

GST is similar to a VAT in that it applies throughout the supply chain and is administered by the Canada Revenue Agency (CRA). Businesses collect GST from customers and remit it to the CRA, but registered businesses can often recover the GST they pay on business purchases through input tax credits (ITCs).

The GST applies in every province unless that province participates in the Harmonized Sales Tax (HST) system, which replaces separate GST and provincial taxes with a single combined tax.

Common GST Exemptions and Zero-Rated Items

Some goods and services are exempt from GST or taxed at a zero rate, including:

• Basic groceries
• Farm livestock
• Prescription drugs
• Feminine hygiene products
• Many transportation services

Many professional and financial services are also exempt. The CRA maintains full exemption and zero-rating lists, which are worth reviewing carefully before assuming taxability.

Canada PST: Provincial Sales Tax

Some provinces impose a separate PST tax in Canada, which functions more like traditional U.S. state or local sales tax and is charged in addition to the federal GST.

Alberta and the three territories—Northwest Territories, Nunavut, and Yukon—do not impose a provincial sales tax. In those jurisdictions, only the 5% GST applies.

PST (and QST in Québec) is administered by provincial tax authorities and is generally treated as a final consumer tax on taxable goods, software, and certain services. Businesses with physical presence or meaningful economic activity in these provinces are typically required to register and collect PST.

Québec Sales Tax (QST): PST, But Different

While Québec’s sales tax is technically considered PST, it operates more like GST in that:

• It follows VAT-style rules
• It is levied at multiple stages of production and sale
• It allows input tax refunds in many cases
• It is administered by Revenu Québec, not the CRA

Importantly, QST is charged in addition to GST, meaning the combined sales tax rate in Québec is 14.975%.

Canada HST: Harmonized Sales Tax

In several provinces, federal and provincial sales taxes are combined into a single tax called the Harmonized Sales Tax (HST). These provinces include New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, and Prince Edward Island.

Instead of collecting GST and provincial tax separately, sellers charge a single HST rate and report it through the CRA’s unified filing system—one registration, one return, one remittance.

How Canadian Sales Tax Differs from U.S. Sales Tax

While both systems tax consumption, sales tax in Canada differs from U.S. sales tax in several important ways:

• VAT-like structure: GST and HST allow businesses to recover tax paid on inputs through ITCs.
• Fewer jurisdictions: Canada uses three primary tax structures instead of thousands of state and local combinations.
• Harmonization: In HST provinces, federal and provincial taxes are combined into one system.
• Provincial administration: PST and QST are administered separately and have their own rules and registration requirements.

For U.S. sellers, the biggest adjustment is philosophical: Canadian sales tax is less about point-of-sale collection and more about tax flowing through the supply chain.

Canada Sales Tax Nexus Triggers

Canada does not use U.S.-style economic nexus thresholds by province. Instead, tax obligations hinge on whether a seller is resident or non-resident and whether they are considered to be carrying on business in Canada.

Resident Status Triggers (Physical Nexus)

Canada may treat a business as a resident if:

• The business is incorporated in Canada or centrally managed there
• A majority of members or employees reside in Canada
• A labor union operates or maintains a branch in Canada

A business may also be considered resident if it has a permanent establishment in Canada, even if ownership is non-resident.

Permanent establishment may include:

• Offices, factories, or inventory in Canada
• Employees, agents, or contractors operating in Canada

If residency or permanent establishment status is unclear, the Government of Canada provides detailed guidance on these classifications.

Carrying on Business (Economic Nexus)

Many non-resident sellers—particularly digital and e-commerce businesses—do not have a physical presence in Canada. However, that does not automatically eliminate Canadian sales tax obligations.

Canada uses a “carrying on business” standard to capture tax from remote sellers. In general, a business may be considered to be carrying on business in Canada if it regularly supplies goods or services to Canadian customers.

Common triggers include:

• Exceeding CAD $30,000 in taxable supplies over a 12-month period
• Selling digital products or services to Canadian consumers
• Marketing directly to Canadian customers
• Using Canadian marketplace facilitators

Once the $30,000 CAD small supplier threshold is exceeded, GST/HST registration becomes mandatory, even for non-resident sellers.

👉 Not sure if your Canadian sales cross the “carrying on business” line? SalesTaxSolutions.US specializes in cross-border nexus analysis so you don’t register too early—or too late.

Cross-Border Marketplace Responsibilities

Canada’s marketplace facilitator laws operate similarly to those in the United States. Typically, marketplace facilitators are Canada’s marketplace facilitator rules share similarities with those in the United States. In general, marketplace facilitators may be required to collect and remit GST/HST and PST on behalf of third-party sellers if:

• Small seller thresholds are exceeded
• The seller is not already registered for GST/HST
• The product sold is taxable under Canadian law

However, Canada places greater emphasis on digital goods and where products are shipped from, which can materially affect collection obligations.

While conceptually similar to U.S. marketplace facilitator laws, Canada’s rules are more centralized and more focused on digital commerce and fulfillment logistics.

Registering for Canada Sales Tax

If you determine that registration is required, here’s how to approach Canada sales tax registration.

Step 1: Determine Which Taxes Apply

Do you need to register for:

• GST/HST only?
• GST + PST?
• QST in Québec?

GST and HST share a single registration, but PST registrations must be completed separately with each province.

Also, it’s important to know that there are two GST/HST registration types:

• Standard GST/HST – required for businesses exceeding the small supplier threshold
• Simplified GST/HST – voluntary registration for smaller or non-resident sellers

The benefit of voluntary registration is that it allows businesses to claim input tax credits on eligible purchases.

Step 2: Register With the Correct Authority

• GST/HST: Register for a CRA business number
• PST: Register with the applicable provincial authority (British Columbia, Saskatchewan, or Manitoba)
• QST: Register with Revenu Québec

Once registered, businesses must collect tax at the correct rates, file returns on schedule, and remit any tax due—while claiming applicable credits.

👉 Canada sales tax registration doesn’t have to be painful. SalesTaxSolutions.US helps sellers register, collect, and stay compliant—without drowning in provincial paperwork.

Final Thoughts

Canada’s sales tax system may appear simpler than the U.S. at first glance, but GST, PST, and HST each come with distinct compliance obligations that can trip up even experienced sellers. Whether you’re expanding into Canada or already selling there, understanding how sales tax in Canada works is essential to avoiding penalties, over-collection, and compliance headaches.