Ontario's HST Rebate on New Builds: Up to $130,000, and the Deadline That Actually Binds

There is a one-year window open in Ontario right now worth up to $130,000 on a new build, and most of the people I talk to have it filed in the wrong drawer. They think it is a first-time buyer program. It is not. It is open to move-up buyers, to downsizers, and to investors buying purpose-built residential rental. The only thing it is strict about is the calendar.

What was actually announced

In the March 26, 2026 provincial budget, Ontario temporarily enhanced the new housing rebate so that the full 13% HST is rebated on an eligible newly built home, up to a maximum of $130,000.

The tiers matter more than the headline, because the word "full" only holds at the bottom of the range:

On a home valued up to $1 million, you get the full 13% back, to a maximum of $130,000. Between $1 million and $1.5 million, that $130,000 maximum holds flat, so it is a fixed dollar amount rather than a full percentage. Between $1.5 million and $1.85 million, it declines on a straight line from $130,000 down to $24,000. Above $1.85 million, you are back to the existing $24,000 rebate that was always there.

The relief comes from two measures, and both of them are Ontario's. The province rebates its own 8% portion, up to $80,000. It then covers the 5% federal-equivalent portion itself, up to $50,000, through the Ontario New Home Affordability Payment, delivered under provincial law rather than through Ottawa. Both halves were enacted together in Bill 114, which received Royal Assent on May 12, 2026.

That detail is worth stating plainly, because a lot of the early coverage said the federal half was contingent on Ottawa passing its own legislation, and some of it still does. Ontario went ahead and delivered that half itself. You are not waiting on a federal bill for either piece, and you should not be discounting the $50,000 when you budget the deal.

What that looks like in dollars

The percentages do not land until you run them, so here is the math on two builds. One note before the numbers: builders typically quote a price with HST included and the rebate already assigned to them, so what follows is about how much tax is embedded in that price, not a separate cheque you were expecting.

Take a new build at $850,000 before tax. HST at 13% is $110,500. That sits under the $130,000 cap, so the full $110,500 comes back. Under the old rules, the provincial new housing rebate maxed out at $24,000 and the federal GST rebate had already phased out completely at this price point, so the same buyer would have absorbed roughly $86,500 in unrecovered tax. That difference is the entire point of the program.

Now take a build at $1.2 million before tax. HST at 13% is $156,000. The rebate is capped at $130,000, so about $26,000 of tax stays on the table. Still a very large recovery, but this is where the word "full" stops being accurate, and it is why I keep pointing at the tiers rather than the headline. Between $1 million and $1.5 million, you are working with a fixed $130,000, and every additional dollar of price is taxed at the full rate with no further relief behind it.

Push to $1.7 million and the rebate has started sliding toward the $24,000 floor. At that end of the market the program is a modest discount rather than a structural change, and it should not be driving the decision.

The part nobody is talking about: it covers rentals

This is the detail that should change how a few of my investor clients are thinking about the next twelve months.

The enhanced rebate applies whether you are acquiring the home as a primary place of residence or as a new residential rental property. There is no preferential treatment between the two, and that includes the dollar amounts. An investor buying a qualifying long-term residential rental accesses the same relief through the Enhanced New Residential Rental Property Rebate, on the same tiers and the same deadlines, which means up to $130,000 and not just the $80,000 provincial half.

The limits on that are real, though. It has to be long-term residential rental. Short-term rental use, the Airbnb and vacation-rental category, does not qualify. Commercial does not qualify. And the rental stream runs through a different rebate application than the owner-occupied one, which means different paperwork and different timing on when the money actually reaches you.

If you are already modelling a new-build rental, this is not a rounding error. Six figures of recovered tax against a purchase-side pro forma changes the return, and it changes it in the year you are least able to absorb costs. Worth running against your numbers in the rental property financing walk-through before you decide.

You get the greater of, not both

There is a separate federal First-Time Home Buyers' GST/HST rebate, worth up to $50,000 on a new build, available on agreements signed on or after May 27, 2025 and before 2031, with some provisions legislated retroactively to March 20, 2025.

Do not assume the two stack. Where a purchaser qualifies for both the enhanced temporary Ontario rebate and the first-time buyer rebate, the rebate is the greater of the two, not both. For a first-time buyer inside the Ontario window, the provincial measure is almost always the larger number, so this generally resolves in your favour. But it resolves as one rebate, not two, and any plan built on adding them together is going to come up short by tens of thousands of dollars.

The deadlines that actually bind

Three dates, and the first one is the one to manage.

The agreement of purchase and sale with the builder has to be signed between April 1, 2026 and March 31, 2027. That is the trigger. Not closing, not occupancy, not possession. The signature date on the agreement.

Construction generally has to begin by December 31, 2028 and be substantially complete by December 31, 2031. For an owner-built home, construction has to start inside the same one-year window and be substantially complete by December 31, 2029. The rental stream runs on the same thresholds and the same windows as the owner-occupied side, so if you are buying to rent, the dates above are your dates.

The practical consequence: on a pre-construction build with a long delivery timeline, you are signing now for a rebate you will not actually collect for years. That is fine, and it is how the program is designed. It just means the decision in front of you is a signature deadline, not a cash-flow event.

How the money usually reaches you

On most builder purchases, you will not receive a cheque. Standard practice on new home rebates is that the purchaser contractually assigns the rebate to the vendor and receives a credit against the purchase price instead, and that is expected to continue here. The builder claims it, you see it as a reduction.

This matters for two reasons. First, read the agreement, because how the rebate is assigned and what happens if eligibility fails is negotiated in that document, not decided afterward. Second, and this is the mistake I see most often on the financing side, a rebate credited at closing is not a down payment. It does not increase the mortgage you can carry, and it does not show up in the cash you need to bring to close in the way people assume. It reduces the tax bill. Nothing more.

If you are self-building rather than buying from a builder, the mechanics are different again, and that file looks more like a staged construction draw than a single closing.

What to do between now and March 31, 2027

If a new build was already on your list for the next two or three years, pull the decision forward and look at it properly now. Not because pre-construction is automatically the right move, it often is not, but because the price of waiting just went up by a defined, knowable number. A deal that does not work with up to $130,000 of tax relief attached is a deal that was never going to work.

If you are comparing a new build against a resale home in the same price range, put the rebate in the comparison explicitly. It is routinely larger than the price gap people spend weeks negotiating over, and it is the single biggest reason the new-build side of that comparison looks different this year than it did last year.

And if you are an investor, the question is narrower: is there a long-term residential rental build you would do in the next three years, and can the agreement realistically be signed before the window closes? If yes, that is a conversation worth having this fall rather than next spring, because the qualifying and structuring work has to happen before the signature, not after it.

None of this changes what you qualify for. The stress test, your debt service ratios, and your down payment requirements all work exactly the way they did before. This is a closing-cost lever, and a large one. Run your numbers on the closing costs calculator and send me what you get. If a new build is anywhere in your thinking for the next few years, the agreement date is the only part of this you cannot get back.