GST/HST on Real Estate Transactions

GST/HST on real property is an area where ordinary intuition fails. Many people assume that buying or selling land or a building works like buying groceries, where the seller simply adds tax. In real estate that assumption is often wrong, and the consequences of getting it wrong are rarely small. A single transaction can involve a tax liability measured in the tens or hundreds of thousands of dollars, and the Excise Tax Act places that liability on different parties depending on facts that are easy to overlook.

The questions that decide the GST/HST treatment of a real estate deal are deceptively simple to state and difficult to answer: Is the supply taxable or exempt? If it is taxable, who is required to account for the tax, the vendor or the purchaser? Is this a sale at all, or a situation the Act deems to be a self-supply? Has the use of the property changed in a way that triggers tax? This page walks through the framework, focusing on the provisions that most often surprise buyers, sellers, builders, and their advisors. It is general information about Canadian federal tax law, not legal advice for your situation.

Taxable versus exempt supplies of real property

The starting point under the Excise Tax Act is that every supply of real property made in Canada is taxable unless the Act specifically exempts it. The most important exemptions for real estate are found in the schedule of exempt supplies, and the dividing line that matters most is between used residential property and new or substantially renovated housing.

A sale of used residential property is generally exempt. When an individual sells the home they have lived in, or sells a previously occupied residential rental property, GST/HST normally does not apply to the sale. This is why an ordinary resale house transaction between two homeowners does not attract tax. The exemption reflects a policy choice that residential accommodation should not be taxed again each time it changes hands.

By contrast, the first sale of new or substantially renovated housing is taxable. When a builder sells a newly constructed home, condominium unit, or a home that has undergone substantial renovation, GST/HST applies to that sale. The term "substantial renovation" has a specific meaning under the Act, generally requiring that all or substantially all of the interior of a building be removed or replaced, so a simple cosmetic update does not make a used home taxable again. Buyers of new housing may be entitled to relief through the GST/HST new housing rebate, but that rebate is itself a frequent source of CRA disputes, particularly over the requirement that the buyer or a relation intend to occupy the home as a primary place of residence.

For non-residential real estate, the analysis is different again. Most sales of commercial property and most sales of bare land by a person engaged in a business or adventure in the nature of trade are taxable. Sales of farmland and personal-use land can carry their own specific rules. Because the categories overlap and the exemptions are drafted narrowly, the characterization of a particular parcel often requires a careful look at its history, its use, and the status of the seller.

The self-supply rules under section 191

One of the least intuitive parts of the regime is that GST/HST can become payable even when nothing is sold. The self-supply rules in section 191 of the Excise Tax Act are designed to put builders who rent out the housing they construct on roughly the same footing as builders who sell it.

The mechanism works like this. When a builder constructs or substantially renovates residential housing and, rather than selling it, gives possession or use of the unit to someone under a lease, licence, or similar arrangement as a place of residence, the builder is generally deemed to have sold and repurchased the property at its fair market value at that point. The builder must then account for GST/HST on that deemed fair market value, even though no money changed hands and no third-party sale occurred. The same idea applies where a builder occupies the unit themselves as a place of residence.

This catches a wide range of situations that people do not expect. A developer who builds a residential rental building and leases the units triggers a self-supply on each unit as it is first occupied. An owner-builder who constructs a new home and moves into it can fall within the rules. A builder who cannot sell new condominium units and decides to rent them out instead, even temporarily, can be deemed to have self-supplied at fair market value, often producing a substantial and unexpected tax bill at the very moment cash flow is tightest. Because the deemed amount is fair market value rather than cost, the section can produce a liability well beyond what the builder spent. Anticipating a section 191 self-supply, and valuing the property defensibly, is frequently the difference between a manageable outcome and a serious reassessment.

Change-of-use and the basic tax content rules

GST/HST also responds when the use of a property changes, even without a sale. The Excise Tax Act treats a significant change in how real property is used as a deemed disposition or acquisition for tax purposes, with consequences that can run in either direction.

When property that was used in a taxable commercial activity is converted to an exempt use, such as a commercial unit converted to residential use, the owner may be required to account for tax on the property's basic tax content, broadly the unrecovered tax embedded in the property. Conversely, when property moves from an exempt use into a commercial activity, the owner may become entitled to recover previously unclaimed tax through an input tax credit. Where the change in use is partial, the rules apply proportionately based on the extent of commercial use.

These provisions matter to anyone who repurposes real estate: a homeowner who begins using part of a property for a commercial short-term rental operation, an investor who converts a long-term residential rental into commercial space, or a business that takes a building out of commercial use. Change-of-use events are easy to miss because they involve no closing and no obvious trigger, yet they can create real liabilities or valuable recoveries. Disputes in this area frequently overlap with input tax credit denials, where the CRA challenges the extent of commercial use claimed.

Assignment sales

Assignment sales have become a focal point for CRA scrutiny, particularly in the pre-construction condominium market. An assignment occurs where a buyer who has signed an agreement to purchase a not-yet-built home, but has not yet closed, sells their rights under that purchase agreement to a new buyer before completion.

The GST/HST treatment of an assignment is its own question, separate from the eventual sale of the finished home. The consideration paid for an assignment, including any markup the assignor earns over their original deposit, can be subject to GST/HST. In recent years the rules were tightened so that an assignment of a purchase agreement for new residential housing is generally treated as a taxable supply, meaning the assignor may be required to collect and remit tax on the assignment price. The original deposit that is simply recovered is treated differently from the profit earned on the assignment, and the precise calculation depends on how the assignment agreement is structured.

Two further issues compound the difficulty. First, an assignor who realizes a profit may also be characterized by the CRA as having engaged in a commercial activity, which has both GST/HST and income tax consequences. Second, the eligibility of the ultimate buyer for the new housing rebate can be affected by the assignment. Because assignors are often individuals who never imagined they were running a business, these reassessments frequently arrive as an unwelcome surprise. We address related rebate questions in our page on new housing rebate disputes.

Bare trusts, agency, and who the real party is

Real estate is often held through arrangements where the person on title is not the person who beneficially owns the property. A bare trust, or a nominee or agency arrangement, is common in commercial real estate, joint ventures, and family holdings, where legal title sits with one party while another party holds the beneficial interest and makes the real decisions.

For GST/HST purposes, the question of who is the supplier or recipient of a property, and who is entitled to claim input tax credits, generally follows beneficial ownership rather than bare legal title. Where a nominee holds title as bare trustee or agent for a beneficial owner, the CRA's administrative position is generally that the beneficial owner is treated as making and receiving the relevant supplies. Getting the registration in the correct name, and documenting the agency or trust relationship clearly, is essential. Mismatches, such as input tax credits claimed by a party who is not regarded as the true recipient of the supply, are a common reason credits are denied on audit.

These arrangements also interact with the self-assessment rules discussed below. If the wrong entity is registered, or the agency relationship is poorly documented, a transaction that the parties believed was handled correctly can unravel under audit. Where real estate is held in a corporation for liability or planning reasons, the structuring questions also overlap with a personal real estate corporation and broader tax planning considerations.

The registrant purchaser's duty to self-assess

This is the rule that catches more sophisticated buyers off guard than any other, and it is worth understanding precisely. On many taxable sales of real property, the vendor does not collect GST/HST from the purchaser. Instead, the obligation to account for the tax shifts to the buyer.

Under subsection 221(2) of the Excise Tax Act, where a supplier makes a taxable sale of real property to a purchaser who is registered for GST/HST, the supplier is generally relieved of the obligation to collect the tax. The corresponding obligation falls on the purchaser: under subsection 228(4), a registrant who acquires taxable real property in these circumstances must self-assess the GST/HST and report it. The purchaser reports the tax directly to the CRA rather than paying it to the vendor at closing.

The practical effect is important. A registered purchaser buying taxable commercial property may pay no tax to the seller on closing, then report the GST/HST it is required to self-assess on its own return. Where the property is acquired for use in a fully commercial activity, the purchaser can often claim an offsetting input tax credit in the same period, so the self-assessed tax and the credit net out and the cash-flow impact is neutral. Where the property is not used wholly in commercial activity, or where the purchaser fails to self-assess at all, the result is very different. The CRA regularly assesses registrant purchasers who closed on commercial real estate and simply never reported the self-assessed tax, on the mistaken belief that because nothing was collected at closing, nothing was owed.

Two traps recur. The first is a purchaser who is not registered when it should have been, so the relieving rule does not apply and tax should have been collected by the vendor. The second is a registered purchaser who self-assesses but cannot fully recover the offsetting credit because the property is used partly or wholly for exempt purposes, such as residential rental. These outcomes turn on registration status and intended use, both of which should be settled before closing, not after a reassessment. Our page on GST/HST audits and disputes covers how these assessments are challenged once they arise.

Commercial property and input tax credits

For commercial real estate, the GST/HST regime is broadly intended to be neutral for registrants. A person who acquires or builds property for use in a commercial activity, and who is registered, can generally recover the GST/HST paid or self-assessed on the acquisition and on related costs through input tax credits. The tax is meant to be borne by the final consumer, not by businesses operating in the chain.

That neutrality is conditional. Input tax credits are available only to the extent the property is used in commercial activities, only to a registrant, and only where the documentary requirements are satisfied. Where a property has mixed use, partly commercial and partly exempt residential, the credit must be apportioned, and the CRA frequently disputes the apportionment. Where the claimant is not the party the CRA regards as the true recipient of the supply, because of a bare trust or agency mismatch, the credit can be denied outright. And where the supporting documentation does not meet the prescribed standards, an otherwise valid credit can be refused on a technical basis.

Leasing adds another layer. Most commercial leases are taxable supplies on which the landlord must charge GST/HST, while residential leases are generally exempt, which in turn affects the landlord's ability to recover tax on the building. A landlord with a mix of commercial and residential tenancies must track use carefully. When the CRA reassesses, the dispute usually centres on extent of use, recipient identity, or documentation, the same three pressure points that recur throughout this area.

How Barrett Tax Law approaches this

When we are asked about GST/HST on a real estate transaction, we start with the threshold questions that drive everything else: is the supply taxable or exempt, and if it is taxable, who is required to account for the tax. We look closely at the nature of the property, whether it is new, used, residential, or commercial, the registration status and intended use of each party, and the way title and beneficial ownership are arranged, because each of those facts can change the result.

From there, the work depends on where the matter stands. For a transaction that has not yet closed, the focus is on identifying obligations in advance, whether a section 191 self-supply will be triggered, whether the purchaser must self-assess under subsections 221(2) and 228(4), and how the new housing rebate or input tax credits will be claimed, so there are no surprises after closing. For a transaction the CRA has already reassessed, we review the basis of the assessment and the available avenues to dispute it, including a notice of objection and, if necessary, an appeal to the Tax Court of Canada.

Every property and every deal is different, and nothing on this page is a prediction about any particular transaction. If you are buying, selling, building, assigning, or repurposing real estate and are uncertain how GST/HST applies, or if you have received a CRA assessment relating to a property, you are welcome to contact us for a free, confidential consultation to discuss your situation and the options available to you.