How GST and HST Apply to Solar Purchases

Is GST charged on solar panels and installation?

This guide is general information, not tax advice. Tax rules differ by person and by year, so the final word belongs to the Canada Revenue Agency and to an accountant who has seen your actual situation.

Canada's goods and services tax and, in some provinces, the harmonized sales tax apply to many goods and services, and solar equipment and installation labour are ordinarily in that group. In a province like Alberta, there is no provincial sales tax, so the visible tax on an invoice is the federal one. Some provinces apply a combined harmonized tax. Do not rely on memory for the current setup; the invoice and the government's published guidance are the references.

Specific relief measures for particular energy products have existed at times, and the scope of such measures can differ from the scope of the sale. Whether any applies to your project is a question for the seller and the Canada Revenue Agency, and it is a reason to ask for tax to be shown as its own line on every quote. The quote comparison guide explains how to line up quotes on equal terms.

How can rebates interact with sales tax?

There are two separate questions. First, is the sales tax calculated on the price before or after the rebate? Second, is the rebate itself treated as a reduction of the price, or as a payment to you that does not change the invoice? The answer can depend on who pays the rebate and how the programme is written. A rebate paid straight to the installer and shown as a discount can produce a different tax calculation than a rebate you claim afterward. Programme terms often say which, and installers who participate in programmes should know the usual treatment.

The programme side is covered in the incentives guide and, for the federal retrofit grant in particular, in the Greener Homes explainer.

A worked example with made-up round numbers

Imagine an invoice with a pre-tax price of 10,000 units and a sales tax charged on top at whatever the current rate is. Now imagine a rebate of 1,000 units. If the rebate is applied as a discount on the invoice, the tax base might be 9,000. If it is paid to you later, the tax base may remain 10,000, so you pay tax on the higher figure and then receive the rebate. Same rebate, slightly different tax. This example uses invented figures and no real rate, and it is only to show why the order of events matters. Read the programme rules and ask the seller to show the tax line.

What about the cost of the whole project?

When comparing the total price, make sure each quote states whether it includes tax, since a quote that omits it looks cheaper than one that includes it. Permits, interconnection fees and electrical work may be taxed differently depending on who provides them. The cost guide lists the usual line items, and the permits guide covers fees that sit outside the installer's invoice.

Where to check

The Canada Revenue Agency publishes guidance on how the tax applies to goods, services and government assistance, and it has an enquiries line for questions. The provincial finance ministry covers any provincial tax. The programme administrator, whether a federal department, a province or a utility, can say how its rebate is treated. For a business, the question of whether you can recover the tax paid is separate and worth an accountant's time. Record the answers you receive in writing.

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