Canadian Taxes for E-Commerce Sellers: GST/HST & Sales Tax Guide

Selling to Canadian customers — or operating a business based in Canada — introduces a tax system that's meaningfully different from U.S. sales tax. Instead of a single "sales tax," Canada uses a combination of the federal Goods and Services Tax (GST), the Harmonized Sales Tax (HST) in certain provinces, and separate Provincial Sales Taxes (PST) or Quebec Sales Tax (QST) in others. For e-commerce sellers, understanding which taxes apply — and when registration becomes mandatory — is essential to staying compliant.

Unlike the U.S., where economic nexus thresholds vary state by state, Canada applies a single federal small-supplier threshold for GST/HST registration, but layers provincial tax rules on top. Non-resident (including U.S.-based) sellers shipping into Canada may also have specific registration obligations once they cross revenue thresholds tied to Canadian sales.

This guide breaks down GST, HST, and provincial sales tax obligations for e-commerce sellers — covering registration thresholds, provincial rate differences, cross-border rules for non-resident sellers, filing requirements, and common compliance mistakes.

1. GST & HST Basics

The Goods and Services Tax (GST) is a federal 5% tax applied to most goods and services sold in Canada. In several provinces, GST is combined with the provincial sales tax into a single Harmonized Sales Tax (HST):

• GST-only provinces/territories: Alberta, British Columbia, Manitoba, Saskatchewan, Quebec, Northwest Territories, Nunavut, Yukon (GST charged separately from any provincial tax)
• HST provinces: Ontario, New Brunswick, Newfoundland and Labrador, Nova Scotia, Prince Edward Island (single combined rate)
• GST/HST is collected on the sale and remitted to the Canada Revenue Agency (CRA)
• Registered businesses can generally claim input tax credits (ITCs) for GST/HST paid on business expenses

2. Provincial Tax Rates Table

*Rates shown are approximate and subject to change — always confirm current rates with the CRA or your provincial tax authority before filing.

3. GST/HST Registration Thresholds

Not every business is required to register immediately. Key registration rules include:

• Businesses with total worldwide taxable revenue over CAD $30,000 in a single calendar quarter or over four consecutive quarters must register (the "small supplier" threshold)
• Businesses under the threshold may register voluntarily to claim input tax credits
• Once registered, GST/HST must be charged on all applicable taxable sales going forward
• Digital and e-commerce sellers should track Canadian revenue separately to monitor this threshold

4. Rules for Non-Resident (U.S.) Sellers

U.S.-based e-commerce sellers shipping goods into Canada face specific rules under Canada's simplified GST/HST registration framework for non-resident vendors:

• Non-resident sellers exceeding the CAD $30,000 threshold from sales to Canadian consumers may need to register under the simplified regime
• Simplified registration allows collection and remittance of GST/HST without claiming input tax credits
• Sellers using fulfillment warehouses in Canada may trigger additional registration and customs obligations
• Import duties and customs processes are separate from GST/HST and apply to goods entering Canada

5. Provincial Sales Tax (PST) & Quebec Sales Tax (QST)

In provinces without HST, businesses may need to separately register for and collect PST or QST in addition to GST:

• British Columbia, Saskatchewan, and Manitoba each administer their own PST with separate registration
• Quebec administers QST through Revenu Québec, separately from the federal CRA for GST
• PST/QST rules on taxability, exemptions, and thresholds differ from province to province
• E-commerce sellers with customers across multiple provinces should track PST/QST obligations separately from GST/HST

6. Marketplace Facilitator Rules in Canada

Similar to the U.S., Canada has marketplace facilitator rules requiring platforms like Amazon.ca to collect and remit GST/HST on behalf of third-party sellers in certain situations:

• Marketplaces may be required to collect GST/HST for non-resident sellers using their platform
• Sellers should confirm whether the marketplace is collecting on their behalf or whether they must register themselves
• Direct sales through your own website are generally not covered by marketplace collection rules

7. GST/HST Filing Frequency Chart

The CRA assigns your GST/HST filing frequency based on annual taxable revenue:

*Approximate CRA revenue bands — businesses can also elect a more frequent filing period voluntarily.

8. Canadian Tax Compliance Checklist

• ☐ Track total Canadian sales to monitor the CAD $30,000 registration threshold
• ☐ Register for GST/HST with the CRA once required (or voluntarily, if beneficial)
• ☐ Determine if PST or QST registration is also required in provinces where you sell
• ☐ Confirm whether your marketplace collects GST/HST on your behalf
• ☐ Apply correct rates by destination province on every sale
• ☐ File and remit on your assigned CRA schedule
• ☐ Reconcile input tax credits against GST/HST collected each period

9. Common Mistakes E-Commerce Sellers Make

• Applying a single flat tax rate to all of Canada instead of the correct provincial rate
• Missing the small-supplier threshold and registering late
• Confusing GST/HST with PST/QST obligations, which are administered separately
• Assuming marketplace collection covers all sales channels, including your own website
• Not separating U.S. and Canadian tax compliance into distinct, trackable systems

10. How Professional Support Helps

Managing GST, HST, PST, and QST across provinces — on top of U.S. obligations — requires careful tracking and up-to-date knowledge of cross-border rules. At CashBook Accounting, we help e-commerce sellers with:

• Sales tax and cross-border tax registration including guidance on Canadian GST/HST
• E-commerce bookkeeping that separates U.S. and Canadian sales by jurisdiction
• Books clean-up for sellers with disorganized multi-country records
• Tax preparation that accounts for cross-border income and obligations
• Financial planning & analysis for sellers expanding into Canada
• Financial modeling to plan cash flow around cross-border tax obligations

11. Frequently Asked Questions

12. Related Articles

Disclaimer: This article is for general informational purposes only and does not constitute tax or legal advice. Canadian GST, HST, PST, and QST rules vary by province and change over time — consult a qualified tax professional such as the CashBook Accounting team for guidance specific to your business.