Preconstruction: Should You Close or Assign? Ontario’s 2026 HST Changes the Math
Original plan was rent-and-hold. Now you want out. With the new April 2026 HST rebate window, closing might actually be smarter.
Should I close on my preconstruction unit or assign it before closing?
Depends on 4 variables: (1) Does your APS allow assignment? (most GTA preconstruction does, but needs developer consent + $5-25K fee); (2) Was your APS signed between April 1, 2026 and March 31, 2027? (enhanced HST rebate up to $130K applies); (3) Can you still qualify for mortgage at closing? (if not → assignment is your only exit); (4) Your assignment premium triggers 13% HST as a separate taxable supply — the hidden cost most people miss.
Source: Ontario Budget 2026 HST Rebate, CRA Assignment Sale Rules
Two or three years after signing an APS, occupancy approaches and the question arrives: close and hold (or rent), or assign and exit? Ontario’s April 2026 enhanced HST rebate changes the calculus significantly. Here’s how to decide.
Decision Framework: 4 Variables
Variable 1: Does your APS allow assignment?
• Most GTA preconstruction allows assignment with developer consent.
• Assignment fees typically $5,000-25,000 (some developers charge 1-2% of purchase price).
• ~5-10% of luxury/limited-edition projects prohibit assignment.
If assignment is prohibited, your only options are: close or default (lose deposit).
Variable 2: Can you qualify for mortgage at closing?
Example: APS signed 2022 at $800K, prime 3.45%, stress test cleared at $3,200/month. By 2026 closing, prime is 5.45% — same loan costs $4,100/month, often pushing buyers below qualifying income.
In this case, assignment is the only orderly exit.
Variable 3: 2026 enhanced HST rebate changes closing math
• In-window closings: effectively zero net HST
• Out-of-window APS (signed 2022/2023): original rebate still applies (~$24-30K), but no enhanced top-up
This creates a paradox — out-of-window buyers may find closing less attractive because in-window inventory will compete favorably on resale.
⚠️HST on assignment premium is a top CRA audit target. Since 2024, CRA cross-references developer assignment registries against assignor GST/HST returns. Underreporting triggers penalties + interest. Coordinate with an accountant pre-assignment.
Variable 4: HST on assignment premium
• You charge $80K premium → net after HST: $70,800 (you owe $9,200 HST)
CRA has aggressively audited this since 2024. Many assignors learn about this HST line item for the first time at closing — too late to renegotiate.
Three Common Scenarios
Scenario A: Investor, 2022 APS at $800K, current fair value $850K
Assign math: $50K premium – $10K assignment fee – $5.8K HST – $2K legal = $32K net cash, immediate exit.
Verdict: long hold + bullish on appreciation → close; want to exit now → assignment for $32K net is rational.
Scenario B: End-user, 2023 APS at $720K, life changes (marriage, upsize)
Assignment now: $40K premium – $11K HST – $10K fee = $19K net.
Verdict: assignment is the cleaner exit.
ℹ️2026 rebate snapshot: 13% HST total (5% federal + 8% provincial). Enhanced rebate up to $130K applies only to APSs signed April 1, 2026 – March 31, 2027. Out-of-window APSs still receive original rebate (~$24-30K), but no enhanced top-up.
Scenario C: End-user, 2026 APS at $900K, closing 2027
• Strong hold intent → close
• Mid-stream plan change → still recommend close + use principal residence exemption on resale (capital gain tax-free)
Verdict: closing wins almost every time in-window.
5 Assignment Mistakes to Avoid
Mistake 1: Not having a lawyer review the assignment clause
Mistake 2: Underestimating fees + HST impact
Mistake 3: Assigning during interim occupancy
Mistake 4: Not consulting an accountant on HST + capital gains
Mistake 5: Inadequate disclosure to your assignee buyer
Frequently Asked Questions
What’s a typical assignment fee?
Mainstream Toronto developers charge $5,000-25,000 flat. A few charge 1-2% of purchase price ($10-20K on a $1M unit). Some luxury developers (parts of Concord, Tridel) charge significantly more or prohibit assignment entirely. Confirm the policy before signing the APS.
Will I owe HST on my assignment?
Yes — on the premium (the amount you charge above your original purchase price). It’s treated as a separate taxable supply at 13% HST. $80K premium = $9,200 HST owed by you. Your assignee separately handles the HST on the price they pay the developer (and claims their own rebate).
Do I qualify for the $130K enhanced rebate?
Only if your APS was signed between April 1, 2026 and March 31, 2027. APSs signed 2022-2025 use the prior rebate framework (~$24-30K depending on purchase price). Enhanced rebate is not retroactive.
If I close and sell within 6 months, will CRA flag it as flipping?
Likely. CRA’s 2023 anti-flipping rules: residential properties sold within 12 months of acquisition trigger full business income tax treatment (no 50% capital gain discount) and disqualify the principal residence exemption — unless you qualify for narrow exceptions (relocation for work, divorce, death, job loss). For short-hold intent, assignment is usually preferable to close-then-sell.
Arthur Zhao
Real Estate Broker · FRI · ABR · SRS · PSA · MCNE · E-PRO · GUILD Elite
VP & Branch Manager, Bay Street Group Inc.
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