Charging HST to Out-of-Province Customers: What Ontario Businesses Need to Know

An Ontario business that starts shipping to Alberta, taking on a client in Manitoba, or signing a services contract with a company in Nova Scotia usually discovers the same thing: the invoicing template that worked fine for years of Ontario-only sales suddenly isn't good enough. HST out of province sales don't automatically use Ontario's rate, and treating every Canadian sale the same way is one of the more common — and avoidable — compliance gaps for a growing business.

The good news is that the process for getting it right is fairly consistent, even though the specific answer changes from sale to sale. This article walks through it as a step-by-step process rather than a wall of rules.

Step 1: Identify the Type of Supply You're Making

Before you can figure out which province's rate applies, you need to know what category your sale falls into — a physical good being shipped, a service being performed, a digital product being licensed, or real property. Each category is sourced to a province using different logic under the federal place of supply rules, so a business selling a mix of products and services can't apply one blanket answer across its whole catalogue.

Step 2: Determine Where the Customer Actually Is

For most sales, this means the delivery address for goods, or the customer's address on file for services — not necessarily your own shipping origin or head office. A customer's billing address, shipping address, and where they actually use the product or service can sometimes point in different directions, and the rules have tie-breakers for exactly this situation. If your order or invoicing system only captures one address field, it's worth reviewing whether that's actually enough to support the tax treatment you're applying.

Step 3: Apply the Correct Rate — and Verify It Before You Invoice

Once you know the destination province, apply that province's current GST/HST rate, not Ontario's. Provincial rates and harmonization status can change, and different provinces sit at different combined rates or apply GST alone. Don't rely on a rate you memorized months ago or copied from a template — verify the current figure for the destination province before finalizing an invoice, particularly for a province you sell into infrequently.

Step 4: Get the Invoicing and Recordkeeping Right

Your invoice should clearly show the tax charged and, generally, your GST/HST registration number. Keep records that support why you applied the rate you did for each out-of-province sale — the customer's address at the time of sale, the shipping documentation, and the basis for treating the supply as a good, service, or digital product. On audit, the CRA is not just checking whether the total tax remitted looks reasonable; it is checking whether each transaction was sourced correctly.

A Note on Drop Shipping and Multi-Leg Deliveries

If you use a third-party supplier to ship directly to your customer, or a shipment passes through more than one location before reaching the end customer, the place of supply analysis can get more complicated than a simple single-leg delivery. Drop shipping in particular has its own set of rules under the Excise Tax Act, and getting the analysis wrong here tends to affect every transaction that goes through the same supply chain — which makes it worth confirming the treatment once, properly, rather than repeating a mistake at volume.

Frequently asked questions