June 2, 2026
When purchasing a newly built home in Ontario, many buyers focus on price, financing, and closing timelines, but one of the most important financial components of the transaction is often overlooked: the federal portion of HST.
The federal government has recently introduced significant changes to how this tax is treated through the First-Time Home Buyers’ GST/HST Rebate, fundamentally altering the landscape for buyers of new and substantially renovated homes. This new program builds on the existing GST/HST New Housing Rebate framework and has the potential to provide substantially greater tax relief than what was previously available, particularly for qualifying first-time buyers.
However, while the opportunity for savings is meaningful, the rules governing eligibility are detailed and highly technical. The availability of federal HST relief depends not only on whether the buyer is a first-time purchaser, but also on how the property is acquired, how it will be used, and whether the transaction satisfies strict timing and structural requirements.
The Existing Federal New Housing Rebate
The traditional GST/HST New Housing Rebate has long allowed certain eligible individuals to recover some of the GST or federal portion of HST paid on a qualifying new or substantially renovated home.
This existing federal rebate can apply to:
Historically, however, the old federal rebate has been limited in practical value in Ontario because it was tied to older thresholds that often did not reflect modern home prices.
The Existing Rental Rebate Framework
Where a property is purchased, constructed, or substantially renovated for long-term residential rental use, the ordinary owner-occupier rebate may not apply. Instead, the buyer may fall under the GST/HST New Residential Rental Property Rebate structure.
This remains important today because many investor transactions still do not qualify under the same rules as owner-occupied first-home purchases. (https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/new-housing-rebate.html)
The New Federal First-Time Home Buyers’ GST/HST Rebate: The Biggest Federal Change
One of the most important developments is that the federal First-Time Home Buyers’ (FTHB) GST/HST Rebate is now active and administered by the Canada Revenue Agency (CRA). This is a major change because it is far more generous than the old federal framework for qualifying first-time buyers.
CRA describes the FTHB GST/HST rebate as a rebate for eligible individuals who are buying, building, or substantially renovating their first home. The home must be newly built or substantially renovated and intended for use as the individual’s primary place of residence (https://news.ontario.ca/en/release/1007212/ontario-expanding-hst-rebate-to-lower-the-cost-of-new-homes-in-partnership-with-the-federal-government).
The Layered Federal Rebates
This is one of the most misunderstood parts of the system. The federal First-Time Home Buyers’ GST/HST Rebate does not replace the existing federal new housing rebate. Instead, CRA says that where both apply, the FTHB rebate acts as a top-up to the existing GST/HST New Housing Rebate. (https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/first-time-home-buyers-gst-hst-rebate.html). That means the rebate system is layered, not replaced. This is legally important, because many buyers think they are switching from one system to another, when in reality they may be operating inside multiple overlapping rebate structures.
Who Qualifies as a First-Time Home Buyer Under the Federal Rules?
This is where many buyers make incorrect assumptions. CRA says that to be considered a first-time home buyer for the federal FTHB rebate, you generally must meet all of the following:
That means a buyer may think they are a casual “first-time buyer” because they personally have never bought property, but still not qualify legally because of a spouse’s or partner’s property ownership history. This is a classic misunderstanding amongst buyers.
What Homes Qualify for the Federal FTHB Rebate?
The federal FTHB rebate is not available for just any home.
CRA says it may apply where the individual:
Financial Impact of the Federal FTHB Rebate
Depending on the value of the home, the federal FTHB rebate can recover up to 100% of the GST or federal portion of the HST, up to a maximum of $50,000. CRA states that if the purchase price is
CRA even provides an example of a $1.25 million home, where the eligible buyer may qualify for 50% of the maximum $50,000 rebate, or $25,000, assuming the other conditions are met. This is a much bigger federal affordability tool than the older federal rebate structure that most buyers are familiar with.
Primary Residence Requirement: Why It Matters More Than Buyers Think
A recurring theme across the rebate system is that the property must generally be intended for use as the buyer’s primary place of residence. CRA says a primary place of residence generally means the residence the individual lives in on a permanent basis, even though a person may have more than one residence. (https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/first-time-home-buyers-gst-hst-rebate/who-can-apply.html)
This is legally important because intended use affects rebate eligibility.
A buyer may think they qualify because they are buying a new home, but problems can arise if:
This is one of the biggest reasons buyers should not casually assume they qualify.
Timing Rules Under the Federal FTHB Rebate
Timing is one of the most important legal parts of the analysis.
For Homes Purchased From a Builder
CRA says the FTHB rebate may be available if, among other things:
For Owner-Built Homes
CRA says the FTHB rebate may also apply if:
An important requirement is that the buyer is the first individual to occupy the home after completion. Timing is very important in HST analysis because many buyers assume eligibility is based only on closing date, when in reality it can depend on agreement date or construction start date.
Substantial Renovation: The 90% Rule
CRA explains that a substantial renovation requires major work, which is generally, 90% or more of the interior of the existing housing must be removed or replaced.
CRA also clarifies that only livable areas count toward the 90% test, which means that garages and crawl spaces do not. Also, unfinished basement work that does not create a livable area generally does not count toward the 90% test. This matters because not every “renovated home” qualifies as “substantially renovated” for HST purposes. (https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/first-time-home-buyers-gst-hst-rebate/who-can-apply.html)
How the Federal Rebate Is Claimed
CRA confirms that applications are open, but also notes that some applications may experience delays due to the legislative amendment that changed the starting date from May 27, 2025 to March 20, 2025. CRA says it expects to begin processing some of those earlier affected applications by spring 2026. (https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/first-time-home-buyers-gst-hst-rebate.html) That is especially relevant for buyers whose agreements fall in the early transition period.
Many buyers incorrectly assume the rebate is always automatically netted off on closing, however it is not always that simple. There are different processes depending on whether the property is built by a Builder or if it is built by the owner.
If You Bought From a Builder
The rebate is generally claimed using Form GST190, and where the builder pays or credits the rebate, the builder must file the application with the CRA. If the builder does not credit it, the buyer may need to apply directly. (https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/first-time-home-buyers-gst-hst-rebate/who-can-apply.html)
If You Built or Substantially Renovated Your Own Home
CRA says owner-built applicants generally apply using Form GST191, along with the required worksheet and supporting records. (https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/gst-hst-rebates/first-time-home-buyers-gst-hst-rebate/who-can-apply.html)
It is important to keep in mind that filing deadlines are generally tied to a base date. Filing records should be kept for 6 years. Buyers may also experience a delay in payment as claims are subject to audit.
Conclusion
The federal GST/HST rebate regime has evolved into a powerful affordability tool, particularly with the introduction of the First-Time Home Buyers’ GST/HST Rebate. For eligible purchasers, the potential recovery of a substantial portion of the federal HST can significantly reduce the overall cost of acquiring a new or substantially renovated home. However, these benefits are not automatic, and the rules governing eligibility are both detailed and highly fact specific.
For buyers, this means that relying on general assumptions or informal guidance can lead to costly mistakes. At Bradshaw & Mancherjee, we work closely with our clients to ensure they fully understand the tax implications of their purchase before committing. Our team provides thorough APS review, evaluates HST exposure, confirms rebate eligibility, and highlights any risks that may arise at closing. Whether you are purchasing a new build, entering into a pre-construction agreement, or exploring an owner-built project, obtaining legal advice from our real estate lawyers early can help you avoid uncertainty and make informed decisions with confidence.
SUMMARY OF EXISTING AND PROPOSED FEDERAL REBATE FRAMEWORKS
| Change Area | Existing Federal GST/HST New Housing Rebate System | New FTHB Rebate |
| Maximum benefit | ~ $6,300 | Up to $50,000 |
| Price eligibility | Phased out at $450K | Full ≤ $1M, partial to $1.5M |
| Buyer eligibility | General owner-occupiers | First-time buyers only |
| Program structure | Standalone rebate | Top-up to existing rebate |
| Market relevance | Limited to low-value homes | Expanded to modern price ranges |
| Program type | Ongoing baseline | New structured program (post–Mar 20, 2025) |
| Housing scope | Limited by value cap | Expanded to higher-value & owner-built homes |
| Financial impact | Modest relief | Significant affordability tool |