The GST rebate on new purpose-built rental, and the closing mistake
The federal rebate is 100% of the GST with no cap. Here is what qualifies, what the deadlines are, and where investors lose it.
For qualifying new purpose-built rental, the federal government rebates 100% of the GST, or the federal portion of the HST. Not a share of it. All of it.
This is the single largest line item most Alberta investors overlook when they model a new build, and it is also the one most commonly mishandled at closing.
What the rebate actually is
The purpose-built rental housing rebate raises the existing GST/HST new residential rental property rebate from a maximum of 36% to 100% of the federal tax paid or payable.
Two features make it more valuable than investors expect:
- There is no per-unit dollar cap. You will see a figure of $35,000 per unit quoted in places. That figure does not apply to the federal purpose-built rental rebate.
- There is no phase-out by value. The ordinary rebate is reduced as fair market value rises above $350,000 per unit. That reduction does not apply here.
In Alberta, where there is no provincial sales tax to complicate the calculation, the federal portion is the whole of it.
What qualifies
The unit must already qualify for the new residential rental property rebate, and it must form part of a multiple unit residential complex meeting one of two tests:
- at least four residential units, each with a private kitchen, a private bathroom, and a private living area; or
- at least ten residential units, with at least 90% held for long-term residential rental.
The units must be held for making exempt supplies, meaning genuine residential occupancy rather than short-term accommodation.
The dates are hard edges
- Construction must have begun after 13 September 2023 and before 2031.
- The building must be substantially completed before 2036.
These are not guidelines. A project that started a day early does not qualify, and there is CRA correspondence dealing specifically with construction that stopped and restarted around that date.
Does an 8-door fourplex qualify?
This is the question that matters for the Alberta product, because the structure is a fourplex with four legal basement suites rather than a conventional apartment block. It is reasonable to wonder whether basement suites count as residential units.
CRA has addressed the point. In interpretation 247914, a building on land under one property title containing four residential units, described as two main-floor units and two self-contained basement units with separate entrances, is a multiple unit residential complex. It is not treated as a duplex, and it is not disqualified by the units being in a basement.
What matters is that each unit is genuinely self-contained: its own kitchen, its own bathroom, its own living area. A suite sharing a kitchen with the unit above is not a separate residential unit, and no amount of separate metering changes that.
The closing mistake
Here is where investors lose the rebate, and it is almost never the eligibility rules.
The rebate is claimed against tax paid or payable on the purchase or self-supply. Whether you are entitled, when the liability arises, and who claims it depend on how the transaction is structured and on the timing of substantial completion. Getting the structure wrong, or filing late, or having the wrong entity claim, can forfeit a rebate the building plainly qualified for.
The practical rule is simple. Decide who is claiming and on what basis before the deal closes, in writing, with an accountant who has done a purpose-built rental rebate before. Discovering the question after closing is how a qualifying project ends up not recovering the tax.
What this does not tell you
This is a description of a federal rebate, not tax advice, and not an opinion on your file. Eligibility is determined by the Canada Revenue Agency on the facts of the specific project. Anyone modelling a purchase on the strength of this rebate should have the treatment confirmed by their own accountant and counsel before committing.