Why does my builder keep my HST rebate?

It is standard practice, not a trick, but it shifts a large risk onto you, and almost nobody explains that at the sales centre.

The mechanics

Your agreement almost certainly says the purchase price is inclusive of HST, and contains a clause requiring you to assign your new housing rebate to the builder and to sign the rebate forms at closing.

What that means in practice:

1. The builder sets the advertised price assuming you qualify for the rebate.
2. The rebate amount is already baked into the price you agreed to, you received it as a discount.
3. At closing, you assign the claim, and the builder recovers it from CRA.

So you do get the benefit. You just get it as a lower price rather than a cheque.

Where the risk lands

The agreement also contains the other half of the bargain: if you do not qualify, you owe the builder the rebate amount at closing. Not later, not as an adjustment to be sorted out, due on closing day, in certified funds, alongside everything else.

The usual reasons a buyer stops qualifying:

• The spousal test disqualifies them federally.
• They decide to rent the home out instead of living in it. This one is decisive, occupancy is a condition, and changing your mind changes your eligibility.
• They let a family member who is not a qualifying relation be the first occupant.
• They assign the agreement to someone else before closing.

On a low-rise home in the $1M–$1.5M range, the ENHR alone is $80,000. That is the size of the bill.

What to check before you waive conditions

Have your lawyer identify, in the agreement:

• The exact rebate assignment clause and what it obliges you to sign.
• Whether the price is stated as HST-inclusive, and at what assumed rebate amount.
• What happens if you are later found ineligible, the indemnity wording.
• Whether changing your occupancy intention triggers it.

If you are not certain you qualify, the right move is to say so before closing rather than discover it at the lawyer’s office. There are often options, including claiming the rebate yourself rather than assigning it, but only while the agreement is still being negotiated.

Have your agreement read before you sign.