Short answer
An assignment can trigger GST/HST and income-tax consequences, and it can change how a new-housing rebate is handled. The taxable amount, timing and whether profit is business income or another category depend on the facts. Get a written tax estimate before setting the price or spending the apparent profit.
The client problem behind the question
The assignor calculates profit as assignment proceeds minus the original deposit and fees. The assignee assumes the builder’s advertised price includes every rebate. Both can be surprised when the lawyer’s statement and tax treatment do not match the informal calculation.
A practical Ontario example
Illustration only: An assignor receives deposit reimbursement plus additional consideration. The contract also allocates assignment fees and commission. An accountant reviews the signed dates, original intent, occupancy facts, number of transactions and GST/HST documents before estimating what remains after tax. Rajiv uses the confirmed closing cash figure rather than giving tax advice.
Questions Rajiv would ask before suggesting a route
- What was the purchaser’s documented intention when signing?
- What consideration reimburses deposits and what amount is additional?
- Who collects, reports or remits GST/HST under the legal documents?
- Which rebate, if any, is assumed by the builder price?
- Could the transaction affect other tax filings or reporting?
Practical routes to compare
- Obtain accountant or tax-lawyer advice before signing the assignment.
- Have the real-estate lawyer align the agreement wording with that advice.
- Hold back a tax reserve instead of treating gross proceeds as spendable profit.
- Tell the assignee’s mortgage professional what amounts must be funded at each stage.
Keep the decisions separate
- Contract and liability: the builder agreement, assignment documents and written consent are for the real-estate lawyer to interpret.
- Marketing and price: a Realtor can assess comparable choices and work within builder restrictions.
- Mortgage: the lender decides acceptable value, income, credit, documents and funding structure. A regulator does not set that lender policy.
- Tax: an accountant or tax lawyer should confirm GST/HST, rebate and income-tax treatment from the actual facts.
Where A, alternative, MIC and private lending may fit
An A lender is normally the first route when income, credit, debt ratios, property and current value fit. Alternative lenders can take a broader view of income or property at a higher cost. A MIC is an institutional mortgage lender and may offer a six-to-twelve-month or longer term, interest-only or amortized payments, open or partially open features, and sometimes a maturity matched to the planned exit. A private lender may also bridge a closing. A short-term approval is useful only when the client can explain how it will be repaid through refinance, sale or other documented funds.
Verified fact and current limitation
CRA explains that GST/HST applies to assignment sales of new housing under the federal rules and provides specific guidance on consideration and deposits. CRA also publishes rebate rules. Individual income-tax characterization requires the full facts and professional tax advice.
Source checked 2026-09-03: read the primary source. Builder wording, lender policy, taxes, appraisal and market conditions must still be verified for the file.
Pressure-test the answer
The route can fail if consent is refused, marketing is restricted, the assignee cannot finance, the appraisal is low, payment timing is unclear, tax is larger than expected, documents expire or the assignor remains liable. Keep a closing fallback, calculate the worst cash requirement and involve the lawyer before a contractual deadline is missed.
Documents to gather now
- Original purchase agreement, disclosure statement, amendments and assignment clause
- Builder consent requirements, fee schedule and critical dates
- Deposit receipts, upgrade payments and 90-day source-of-funds history
- Proposed assignment agreement and payment schedule
- Current income, credit, liabilities and other-property details
- Comparable sales, appraisal and lawyer/accountant estimates when available
Related AskRajiv guidance
Continue with new housing hst rebate owner occupied rental, assignment deposit profit payment cash flow ontario.
Get an assignment closing strategy
Use Rajiv’s direct mortgage strategy form. Include the builder deadline and the result you need: assign, close, rent, sell or arrange a short-term bridge.
Source and review
Reviewed by Rajiv Verma, Mortgage Broker on 2026-09-03. Educational information only; not legal, tax, appraisal, real-estate or mortgage approval advice.