What taxes can arise when I sell a pre-construction condo assignment?

Arsen Accounting Services · Question 154 · Sources checked October 29, 2026

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An assignment sale transfers your rights under a purchase agreement. It can raise both income-tax and GST/HST questions before you ever take ownership of the completed condo. Review the assignment terms before agreeing to a price.

Separate income tax from GST/HST

CRA states that, effective May 7, 2022, assignment sales involving newly constructed or substantially renovated residential housing are taxable for GST/HST purposes. Do not rely on older guidance suggesting that an intention to move in necessarily makes the assignment exempt.

For income tax, the profit may be business income. The property-flipping rules can also apply to rights held for less than 365 days, subject to their conditions and exceptions. The treatment of the deposit reimbursement must be reviewed separately from the assignment profit.

Official guidance: [1], [2], [3].

Read whether the price includes tax

For example, a seller negotiates an assignment amount without specifying GST/HST treatment. The amount left after satisfying tax and contract obligations may be very different from the anticipated profit. Have the agreement reviewed before signing rather than relying on a later bookkeeping entry.

Gather the transaction documents

• Original builder agreement and deposit receipts.
• Assignment agreement and builder-consent charges.
• Statement separating deposit reimbursement from other consideration.
• Evidence of intention, holding period, and any life-event exception.

Ask your tax adviser and real-estate lawyer to coordinate the tax clauses and closing amounts. Keep commissions, legal costs, and other fees itemized. A real-estate closing statement is useful evidence, but it does not replace a complete income-tax and GST/HST review of the assignment.