Ontario’s New-Home HST Rebate: Should You Re-Sign Your APS?

Last updated: July 2026

Quick Answer

Why So Many Buyers Want to Re-Sign Right Now

Ontario’s enhanced HST rebate can return a significant amount of tax on a qualifying new home, and that has understandably captured the attention of buyers. For agreements signed inside the eligibility window, the savings can be substantial. Therefore, it makes sense that buyers who signed just before the window opened are asking whether they can re-sign to qualify.

Builders across the Greater Toronto Area have been fielding exactly this question. If you are in that boat, wanting to capture the rebate is a reasonable instinct, not a mistake. The important thing is to understand how eligibility is decided before you change anything about your agreement.

This guide walks through what re-signing may and may not achieve, who pays the HST at closing, and the practical steps that can protect you along the way.

Which Buyer Are You? Pick Your Path

You must be aware of your situation, and April 1, 2026 is a key date to note.

What The Re-Sign Trap Actually Is

The enhanced housing rebate borrows its structure from the federal first-time home buyers’ GST rebate, and that program comes with anti-avoidance provisions. Anti-avoidance simply means rules designed to stop people from rearranging a transaction only to unlock a tax benefit. Under that framework, varying, altering, or assigning an existing agreement, or terminating one and entering a new agreement, for the purpose of qualifying, may be disallowed.

Applied to the enhanced rebate, this means tearing up a pre-April-2026 agreement and signing a fresh one on a later date may not make you eligible. The CRA can review arrangements that appear designed to manufacture qualification, and a rebate obtained in that manner may later be denied.

Because this area is still settling, the safest course of action is to confirm your position before acting. You can read how the rebate itself works in our explainer on how the Ontario HST rebate works.

Re-Sign Or Leave It Alone: A Side-By-Side Look

When buyers weigh re-signing, they often focus only on the potential savings and overlook what the step can cost them. Setting the two paths beside each other can make the trade-off clearer.

Leaving a valid agreement in place keeps your existing rights and closing date intact, and it avoids giving the CRA a reason to look closely at your file. Re-signing solely to qualify, by contrast, may put the rebate out of reach anyway, and it can expose you to disputes with your builder over price, deposits, or timing.

The comparison below lays out how each choice tends to play out. Use it as a starting point for a conversation with your lawyer, not as a final answer for your specific contract.

Who Actually Funds the HST At Closing

The document that shows this is the statement of adjustments, the closing summary that sets out the credits and charges between you and the builder. When the builder credits the rebate there, the amount you owe at closing drops, and the builder recovers the rebate from the CRA. Builders are generally not required to offer this credit. As such, it is wise to confirm the arrangement in writing before you sign.

The relief has two parts: the provincial portion of the HST (the 8% Ontario share), which you claim through Form GST190 and its Ontario schedule, and a separate 5% Ontario top-up that the province pays after your main rebate is assessed. How much each part comes to depends on your home’s price, which our rebate explainer covers in detail. Where the builder does not credit these amounts, you may need to bring the full HST to closing and wait to be reimbursed.

Because the CRA’s forms and each builder’s process were still being finalised through mid-2026, confirm the current process with your builder and your lawyer, and, where tax questions arise, an accountant, before you rely on any particular outcome.

Protecting Your Rebate: A Step-By-Step Checklist

A short and ordered approach can keep you out of trouble and out of an avoidable dispute.

1. 1
   Confirm your signing dateCheck the exact date on your Agreement of Purchase and Sale. That date, not your closing date, decides eligibility.
2. 2
   Do not re-paper the deal yourselfResist the urge to cancel or amend an earlier agreement on your own initiative to qualify. That is the step most likely to backfire.
3. 3
   Get any change in writingIf a builder proposes any change to your contract, ask for the reason and the rebate treatment in writing.
4. 4
   Plan your cashConfirm whether the builder intends to credit the rebate at closing or whether you may need to fund the HST and claim it back, and budget for carrying that cost for a period.
5. 5
   Have it reviewed before you signOur Ontario real estate lawyers can confirm eligibility, review how the rebate is handled in your contract, and flag any clause that shifts risk onto you.

Taking these steps in order tends to prevent the most common and most expensive mistakes.

The Clawback Risk and the Assignment-Sale Date Trap

Two risks tend to catch buyers off guard. The first is a clawback, which is the CRA’s right to recover a rebate that was credited but later found not to apply. In the case that a builder credits the rebate at closing and the CRA afterward decides you did not qualify, the builder and the buyer can be jointly and severally liable. This means that the CRA may pursue either party for the full amount. Well-drafted agreements address this with eligibility representations and an indemnity, which is one reason a legal review is highly advisable.

The second is the assignment-sale trap. In an assignment sale, you take over a pre-construction contract that someone else signed first. Eligibility usually depends on when that original contract was signed, not on when you signed the assignment. So if the first buyer signed before April 1, 2026, taking over the contract may not qualify you.

Qasim Ali, Principal Lawyer at Nihang Law reviews these details before clients commit, since a single date can decide the outcome. Where a disagreement has already arisen, a real estate dispute may call for separate advice.

Common Mistakes Buyers Make

• Assuming the closing date matters. Eligibility turns on the signing date of your Agreement of Purchase and Sale, not the day you close.
• Tearing up a valid pre-April-2026 agreement and re-signing it only to qualify, without legal advice.
• Believing the rebate is automatically taken off the price. Some builders credit it at closing, and others require you to pay the HST and claim it back.
• Not budgeting for the possibility of funding the full HST at closing while the CRA process settles.
• In an assignment purchase, looking at the assignment date instead of the original builder-and-buyer agreement date.
• Signing a builder’s amendment or rebate-assignment clause without understanding the clawback and indemnity terms.
• Treating an agent’s or accountant’s reassurance as a substitute for a lawyer reviewing the actual contract.

Frequently Asked Questions

Where Nihang Law Can Help

The key point is simple. The date on your agreement decides your eligibility. Changing that agreement to chase the rebate can create more risk than reward. If you are unsure where you stand, a short conversation before you act can save a great deal later.

About the author

Qasim Ali

Principal Lawyer · Nihang Law Professional Corporation · Toronto & Scarborough, Ontario · Law Society of Ontario

Qasim Ali is the Principal Lawyer at Nihang Law Professional Corporation, serving clients across Toronto, Scarborough, and the broader Greater Toronto Area. He provides full-service legal representation across immigration, real estate, family law, criminal law, civil litigation, employment law, wills and estates, and business law.

Nihang Law is particularly recognized for its depth in immigration and real estate law — a combination that serves newcomers and growing families navigating both legal systems simultaneously.

Learn more about Qasim Ali →

Sources & References

• Canada Revenue Agency, GST/HST Notice 346 — Ontario Enhanced New Housing Rebate (June 2026) — eligibility window, builder crediting at closing, 5% Ontario top-up, Form GST190.
• Department of Finance Canada, Regulations Amending the New Harmonized Value-Added Tax System Regulations, No. 2 (P.C. 2026-610) — implements the enhanced provincial rebate; in force retroactive to April 1, 2026.
• Government of Ontario, O. Reg. 196/26 under the Retail Sales Tax Act — Residential Property Rebates — delivers the 5% Ontario top-up.
• Legislative Assembly of Ontario, Bill 114, HST Relief Implementation Act (Residential Property Rebates), 2026 (S.O. 2026, c. 5) — Royal Assent May 12, 2026.
• Canada Revenue Agency, First-time home buyers’ GST/HST rebate — anti-avoidance framework the enhanced rebate parallels (varying, altering, assigning, or terminating and re-entering an agreement to qualify).