Ontario's new HST rebate on new homes sounds like a win for buyers, up to $130,000 in tax relief on homes valued up to $1.5 million. But before you start celebrating, there are a few things you need to understand about how this rebate actually works, who really benefits, and the risks that come with buying new construction in today's market.
Here are 7 things every home buyer should know.
1. The HST Is Already Baked Into the Price — And You Won't See It on the Bill
One of the most common questions I get from buyers looking at newly built homes is: "How do I know if I'm getting the rebate?"
The short answer? You don't.
When you buy a new home, the HST is included in the purchase price. There's no separate line item that says "HST" and another that says "rebate." It's all rolled into one number. So just because the government reduced the tax on new homes doesn't mean builders are required to reduce their prices.
2. Whether Builders Pass the Savings On Depends Entirely on the Market
Imagine a builder has a newly completed home listed at $1 million that they believe is fairly priced for today's market. In that scenario, the builder has no incentive to lower their price. They'll pocket the tax savings and increase their profit margin. Why would they give away money on a product they believe is already priced correctly?
Now flip the script. If that same $1 million home is sitting unsold because buyers aren't willing to pay that much, the calculus changes. Before the HST cut, lowering the price meant eating into the builder's profit, or potentially taking a loss. But now, the builder can reduce the price while maintaining their margins because the government is effectively absorbing the difference through lower taxes.
In short: some builders will lower their prices, others won't. It depends entirely on how realistic their original asking price was relative to what today's market will bear.
3. The Biggest Winners Aren't First-Time Buyers — They're Builders and Institutional Investors
This tax cut has been framed as a step toward making housing more affordable for young Canadians. The reality is more complicated.
Builders across Ontario are sitting on thousands of newly completed but unsold units. That inventory costs money, builders are borrowing to carry it, paying interest on empty homes every month. This rebate gives them two key ways to stop the bleeding.
The first involves institutional investors. Over the past year, we've seen a number of large corporations buy entire blocks of condos from builders at significant discounts. The HST cut accelerates that process because it allows builders to discount their units even further, making bulk purchases more attractive to these investors.
You might be wondering: why can't an average first-time buyer get the same deal? The answer is simple. A corporation buying 500 units from several builders has leverage that no individual buyer can match. They will negotiate prices well below anything a single buyer could access. So when governments hand over billions in tax relief to stimulate the market, a significant portion of that money is effectively making it cheaper for corporations to buy housing in bulk, not making it more affordable for the next generation of homeowners.
4. Builders Can Now Rent Out Unsold Units Tax-Free — And Wait for Prices to Rise
The second group of builders benefiting from this rebate are those who don't want to sell in bulk to corporations and don't want to cut their prices at all.
Before April 1st, when a builder rented out a newly completed condo, it was treated as a "deemed sale" to themselves, which triggered a requirement to pay HST on that unit. That was a costly barrier. Now that the HST has been cut, builders can simply rent out their empty condos to cover carrying costs while they wait for the market to recover and prices to rise.
This is a perfectly rational business decision for builders. But it's worth understanding that this option, made possible by taxpayer-funded relief, doesn't put a single new homeowner in a home.
5. Pre-Construction Is Where You're Most Likely to See Lower Prices
Now let's turn to pre-construction homes, because this is where the HST rebate may actually translate into real savings for buyers.
The prices builders have been asking for new pre-construction housing have been significantly higher than resale prices, which is a major reason why construction starts have been plummeting. Buyers simply won't pay a premium for something that won't be built for years when they can buy an existing home for less. A cut in the HST could help bridge that gap, making new projects more viable and giving builders room to bring their prices closer to what the market will support.
But before you rush out to sign a purchase agreement, there are two critical risks you need to understand.
6. There's No Guarantee Your Pre-Construction Home Will Actually Get Built
In today's volatile economic environment, the risk that a pre-construction project never breaks ground is very real. Maybe the builder didn't sell enough units to secure financing and start construction. Maybe rising construction costs or shifting economic conditions made the project unviable after you signed your agreement.
If the project gets cancelled, you'll get your deposit back — but you'll have lost time, potentially missed out on other opportunities, and you'll be re-entering a market that may have moved against you. There is no guarantee you're going to get the home you bought.
7. If Your Pre-Construction Home Loses Value Before You Close, You Could Be on the Hook
Here's a risk that catches many buyers off guard.
Say you buy a pre-construction home today for $1 million. A year from now, when you're scheduled to take possession, it's only worth $900,000. You still owe the builder $1 million. If you bought a resale home, you'd face the same paper loss — but with pre-construction, the consequences can be far more severe.
That $100,000 shortfall means you'd typically need to come up with an additional $100,000 on top of your original planned down payment to cover the decline in value at closing. And if you also own a home that you need to sell to complete the purchase, its value may have dropped too, leaving you with substantially less equity than you planned on.
These aren't hypothetical risks. They are the lived experience of many buyers who purchased pre-construction over the past few years.
The Bottom Line
Ontario's HST rebate on new homes is a meaningful policy change, but it isn't the affordability silver bullet it's been presented as. Builders, not buyers, hold most of the cards when it comes to whether the savings get passed along. Institutional investors are positioned to benefit far more than individual purchasers. And the pre-construction market, while potentially offering real savings, comes with risks that every buyer needs to weigh carefully.
If you're thinking about buying a new home in Ontario, understand the market you're buying in, know who actually benefits from the rebate, and make sure the math works for your specific situation before you sign anything.
John Pasalis is President of Realosophy Realty. A specialist in real estate data analysis, John’s research focuses on unlocking micro trends in the Greater Toronto Area real estate market. His research has been utilized by the Bank of Canada, the Canadian Mortgage and Housing Corporation (CMHC) and the International Monetary Fund (IMF).
Have questions about your own moves in the Toronto area as a buyer, seller, investor or renter? Book a no-obligation consult with John and his team at a Realosophy here: https://www.movesmartly.com/meetjohn