Developer tax returns: self-supply HST, the rental rebate, and when profit is taxed

Selling and holding are two different tax worlds

A unit sold to an individual buyer follows the ordinary rules for a taxable supply of new housing: HST charged on the price, offset in whole or in part by the buyer's new housing rebate, with eligibility turning on the unit being the buyer's or a close relation's primary residence rather than on anything about the buyer's citizenship or residency status. A unit built to be leased out long-term has no purchaser at all, so the Excise Tax Act instead deems the builder to have made a taxable self-supply — a decision that has to be made, and priced, well before the first unit is framed. Mixed projects complicate the picture further — a building with rental units above and condo units for sale below runs both regimes at once, on the same site, and the two calculations do not net against each other, so we keep them on entirely separate schedules from the start.

Self-supply: the day you become your own customer

Upon substantial completion of construction and the earlier of the building's first occupancy or its first offer for lease, a builder holding new residential units for rental is deemed to have sold and immediately repurchased the complex at fair market value. HST applies to that deemed sale as though a real buyer had paid it, generating a real cash liability with no actual purchaser writing the cheque. Because the assessment lands on fair market value rather than construction cost, it can exceed what the cost-based numbers in a pro forma anticipated, so we model the self-supply liability as its own line item from the earliest feasibility stage, not as a year-end surprise. The GST/HST return that reports it is due for the reporting period that includes the self-supply date, so the financing needed to cover it has to be arranged before completion, not scrambled together after the assessment lands.

The enhanced rental rebate changed the self-supply math

Since September 2023, an enhanced GST rental rebate has been available for qualifying new purpose-built rental housing, removing the old phase-out and, as at the time of writing, covering the federal GST portion in full for projects that meet the unit-count and long-term-rental-use conditions — a meaningful offset to the self-supply liability above for the projects that qualify. The conditions and the construction-timing window are specific enough that we confirm eligibility against your project's actual unit mix and lease terms before it is built into the pro forma, rather than assumed from a headline announcement. Ontario's own enhancement to the provincial portion generally follows the same qualifying conditions, but we check the two levels separately rather than assuming one automatically mirrors the other.

When the profit actually gets taxed

Financial statements prepared for a lender often recognize revenue on a percentage-of-completion basis so a mid-construction project does not look like it has earned nothing, but taxable profit on inventory generally lands when a sale closes, not as the building rises — a divergence between the lender's numbers and the CRA's that has to be reconciled every year, not just at project completion. On the sale side, a new housing rebate assigned by the buyer at closing is credited against the purchase price and claimed directly by the builder, which reduces what is collected at the table but still has to be tracked and matched to the GST34, or it goes missing between the lawyer's statement of adjustments and the return. Instalment planning depends on getting this timing right too — a corporation whose books recognize profit by percentage-of-completion but whose tax return defers it to closing needs its instalment payments modelled on the taxable-income projection, not the financial-statement one, or it will consistently over-remit during construction years and under-remit in a closing year. HST on commercial and residential rent is worth reading alongside this if your project includes ground-floor retail or office space leased long-term once construction ends.

Source: CRA — GST/HST new residential rental property rebate enhancement.