Registering, Collecting, And Remitting Provincial Sales Tax (PST): Checklist For U.S. E-commerce Sellers

Provincial Sales Tax (PST) A provincial retail sales tax imposed separately from GST in certain Canadian provinces.

This practical checklist walks U.S. e-commerce sellers through the operational steps to determine PST obligations, set up systems, and maintain compliance when selling into Canadian provinces that impose a retail sales tax.

Step 1 — Identify Where PST May Apply

Map your customer base, fulfilment locations, and inventory storage. If you store goods in a province, use a local fulfilment partner, or otherwise carry on business there, provincial rules may require PST registration and collection.

Step 2 — Review Provincial Definitions And Thresholds

Each province defines taxable supplies, exemptions, and registration triggers differently. Consult the provincial tax authority pages for precise definitions, including rules for digital goods, software, and services that may be taxable in certain jurisdictions.

Step 3 — Register With The Province When Required

• Determine Account Type: Provinces issue PST/RST accounts separate from federal GST numbers; register for the provincial account(s) where required.
• Provide Required Documentation: Be prepared to supply business details, NAICS codes, and information on inventory locations.

Step 4 — Configure Point-Of-Sale And E-commerce Systems

Ensure your e-commerce platform, payment gateway, and ERP/WMS can apply province-specific taxes. Configure tax rules for product taxability, province-specific exemptions, and correct presentation of taxes on customer invoices.

Step 5 — Collection And Invoicing Best Practices

• Collect At Sale: Charge the correct PST at the time of sale unless the province allows deferred collection.
• Document Exemptions: Maintain proof for tax-exempt sales (resale certificates, exemption certificates) per provincial recordkeeping rules.

Step 6 — Filing, Remittance, And Recordkeeping

File PST returns on the schedule required by the province and remit collected taxes promptly. Keep clear records of sales, tax collected, exemptions, and inventory locations for the period required by provincial law (typically multiple years).

Step 7 — Leverage Marketplaces And Third-Party Fulfilment Carefully

If you sell through a marketplace, confirm whether the marketplace facilitator collects and remits PST on your behalf. If you use a third-party fulfilment center in Canada, assume provincial registration may be required unless the fulfilment partner explicitly accepts collection responsibility and it is permitted by provincial rules.

Checklist Summary

• Inventory Check: Identify physical inventory locations in Canada.
• Customer Sourcing: Determine provinces with significant customer volumes.
• Registration: Register for PST/RST accounts where nexus exists.
• Systems: Configure tax calculation and invoicing systems for provincial rules.
• Marketplace Rules: Verify marketplace facilitator responsibilities per province.
• Records: Maintain invoices, exemption certificates, and delivery proofs.

Practical Tips For Warehouses And 3PLs

• Service Contracts: Ensure contracts with 3PLs clearly allocate tax responsibilities and declare inventory locations.
• WMS Data: Pass warehouse origin and lot-level location to your tax engine for accurate sourcing.
• Audit Preparedness: Keep receiving reports, bills of lading, and customer invoices available for provincial audits.

In short, the Provincial Sales Tax (PST) requires a province-by-province approach: identify nexus, register where required, configure systems to collect correct taxes, and keep thorough records to meet provincial filing and audit obligations.