Pre-construction assignment calculator for Toronto condos
Checked against primary sources
Assign a Toronto pre-construction unit bought at $725,000 for $805,000 and you get your $145,000 deposits back plus about $45,525, after the builder fee, commission, 13% HST on the uplift and a 25% tax reserve. Below about $732,738 you don't recover your deposits.
Closing yourself instead needs $24,450 more on closing day at a $760,000 appraisal. The calculator puts the three choices side by side on the same deposits, and shows what the buyer of your assignment has to bring.
Pre-construction assignment calculator
Assign before closing, close and resell, or close and hold: what each leaves you with on the same deposits, and what the buyer of your assignment needs.
- Lowest price that returns your deposits
- $732,738
- $7,738 over the original price
- Cash to close yourself
- $24,450
- covered by your available cash
- Appraisal you'd need to close
- $705,563
- lender lends 80% of the lower of price and appraisal
- Cash the assignment buyer needs
- $224,650
- incl. $25,150 land transfer tax on $805,000
Estimate, not advice. Tax and HST lines are reserves you set; your accountant and lawyer decide how they apply to your agreement.
Assign before closing ahead by $45,525; assigning returns $190,525
| Path | Cash you put in | Net position | How it's counted |
|---|---|---|---|
| Assign before closing | $145,000 | $45,525 | Deposits back plus the uplift, less the builder fee, legal, commission, HST and the tax reserve. |
| Close, then sell after 6 months | $169,450 | -$23,312 | Sale at the appraisal grown 0%/yr, less 4% selling costs, the mortgage balance and the tax reserve; rent minus carrying costs added. |
| Close and hold 36 months | $169,450 | -$7,982 | Equity at the horizon plus net rent, minus everything you put in. Unrealized: no sale, so no tax reserve. |
What is driving this result
- Your uplift is $80,000. Costs take $19,300 of it ($5,000 builder fee, $2,400 commission, $10,400 HST, $1,500 legal) and the tax reserve $15,175.
- Closing needs $24,450 on top of your deposits: the lender lends $580,000 (80% of $725,000), and land transfer tax is $21,950.
- Below $732,738, assigning doesn't return all your deposits after costs.
- The buyer of your assignment faces a $45,000 appraisal shortfall: a lender won't finance the part of the price above the appraisal.
| Assignment price ↓ / Appraisal → | $680,000 | $720,000 | $760,000 | $800,000 | $840,000 |
|---|---|---|---|---|---|
| $765,000 | $247,050 | $215,050 | $183,050 | $179,050 | $179,050 |
| $785,000 | $267,850 | $235,850 | $203,850 | $183,850 | $183,850 |
| $805,000 | $288,650 | $256,650 | $224,650 (your inputs) | $192,650 | $188,650 |
| $825,000 | $309,450 | $277,450 | $245,450 | $213,450 | $193,450 |
| $845,000 | $330,250 | $298,250 | $266,250 | $234,250 | $202,250 |
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Assumptions & sources
Assumptions
- Assignment proceeds = deposits reimbursed + (assignment price − original price) − builder fee − legal − commission − HST − tax reserve.
- HST: from 2022-05-07, CRA treats assignment sales of new housing as taxable, including by individuals; the part reimbursing your deposit is excluded when the agreement says so. We apply 13% to the uplift.
- Income tax: CRA's flipping rule deems profit on residential property (and rights to buy it) held under 365 days to be business income, with life-event exceptions. The reserve % is yours to set.
- Closing: the lender lends its LTV on the lower of price and appraisal; you fund the rest, plus land transfer tax and closing costs. Fixed rates compound semi-annually.
- The assignment buyer's land transfer tax is charged on the full consideration (original price + assignment payment), per Ontario's guidance. Toronto's page doesn't address assignments; we apply the City tax to the same total. Confirm with your lawyer.
- Resale and hold paths assume the property is worth the appraisal at closing, growing at your rate; hold is unrealized (no sale, no tax).
Sources
- Canada Revenue Agency — Residential property flipping rule (effective January 1, 2023). Checked .
- Canada Revenue Agency — GST/HST Notice 323: GST/HST treatment of assignment sales (effective May 7, 2022). Checked .
- Canada Revenue Agency — GST/HST Info Sheet GI-120: Assignment of a purchase and sale agreement for a new house or condominium unit (effective May 7, 2022). Checked .
- Government of Ontario — Determining the value of the consideration for transfers of new homes (assignments) (effective July 8, 2025). Checked .
- Government of Ontario — Calculating land transfer tax (effective January 1, 2017). Checked .
- City of Toronto — Municipal land transfer tax (MLTT) rates and fees (effective April 1, 2026). Checked .
- Bank of Canada — Effective rate on new uninsured fixed mortgages, 5 years and over (series V122667786) (effective August 1, 2026). Checked .
What is a pre-construction assignment?
An assignment is the sale of your right to buy a home that hasn't been built or closed yet. You signed an agreement with the builder and paid deposits; before final closing you transfer that agreement to someone else. They reimburse your deposits, pay you a premium (the "uplift") on top of your original price, and close with the builder in your place.
Most Toronto pre-construction agreements need the builder's written consent to assign, and many charge an assignment fee or restrict marketing the unit before occupancy. Those terms are in your agreement, so treat the fee in the calculator as an example to replace with your own number.
People assign for three reasons: the market rose and they want the gain without closing; the appraisal came in low and they can't fund the difference; or their plans changed. The right choice depends on the cash you have, how the lender values the unit, and how the profit is taxed.
How much do you actually keep when you assign?
Less than the uplift. On a $725,000 unit with $145,000 in deposits, a $5,000 example builder fee, $1,500 legal, 3% commission on the uplift, 13% HST on the uplift and a 25% tax reserve:
| Assignment price | Uplift | Costs + HST | Tax reserve | Cash back incl. deposits | Gain over deposits |
|---|---|---|---|---|---|
| $745,000 | $20,000 | $9,700 | $2,575 | $152,725 | $7,725 |
| $765,000 | $40,000 | $12,900 | $6,775 | $165,325 | $20,325 |
| $805,000 | $80,000 | $19,300 | $15,175 | $190,525 | $45,525 |
| $845,000 | $120,000 | $25,700 | $23,575 | $215,725 | $70,725 |
The break-even assignment price, where you recover every dollar of deposits after costs, is $732,738: $7,738 over your original price. Assign below it and you're paying to leave the agreement, which can still beat being unable to close.

Does HST apply to an assignment sale?
For new housing, generally yes. CRA's position is that assignment sales of newly constructed or substantially renovated homes are taxable for GST/HST, including assignments by individuals, for agreements from 2022-05-07. The part of the assignment price that reimburses your deposit is excluded from the taxable amount when the assignment agreement says so in writing. The assignor normally collects the tax.
That's why the calculator applies 13% to the uplift only, by default: $10,400 on a $80,000 uplift. Whether it's collected on top of the price or comes out of your proceeds depends on how the agreement is written, so have your lawyer draft it before you list.
Source: Canada Revenue Agency, GST/HST Notice 323: GST/HST treatment of assignment sales, effective May 7, 2022. Checked .Source: Canada Revenue Agency, GST/HST Info Sheet GI-120: Assignment of a purchase and sale agreement for a new house or condominium unit, effective May 7, 2022. Checked .How is a profit on an assignment taxed?
CRA's residential property flipping rule deems the profit on residential property owned for fewer than 365 consecutive days to be business income, fully taxable, and any loss deemed nil, for transactions from January 1, 2023. CRA says assignment profits are treated the same way. There are exceptions for life events such as death, a new child, separation, serious illness, job loss or a work relocation.
Business income is taxed at your marginal rate, so the reserve you set matters: at a 25% reserve the tax line on the example is $15,175. We don't decide which treatment applies to you; an accountant does.
Source: Canada Revenue Agency, Residential property flipping rule, effective January 1, 2023. Checked .What does the buyer of an assignment pay?
The assignee pays you the deposits and the uplift, then closes with the builder for the original price. Ontario charges land transfer tax on the whole consideration: the assignment payment plus the purchase price in the assigned agreement (plus extras and upgrades). Inside Toronto we apply the City's tax to the same total; the City's own pages don't address assignments, so confirm it with your lawyer.
| Price paid | Mortgage | Land transfer tax | Cash needed |
|---|---|---|---|
| $765,000 | $608,000 | $23,550 | $183,050 |
| $805,000 | $608,000 | $25,150 | $224,650 |
| $845,000 | $608,000 | $26,750 | $266,250 |
Lenders lend on the lower of price and appraisal. When an assignment price runs ahead of what an appraiser will support, the buyer funds the difference in cash, which is why assignment buyers should line up financing before they sign.
Source: Government of Ontario, Determining the value of the consideration for transfers of new homes (assignments), effective July 8, 2025. Checked .Why does a low appraisal force so many assignments?
Because the lender's loan is a share of the appraisal, not the price you agreed years earlier. With $145,000 down and $40,000 of cash available, closing on the $725,000 unit looks like this:
| Appraisal | Mortgage (80%) | Cash at closing | Gap vs your cash |
|---|---|---|---|
| $640,000 | $512,000 | $92,450 | $52,450 |
| $680,000 | $544,000 | $60,450 | $20,450 |
| $720,000 | $576,000 | $28,450 | none |
| $760,000 | $580,000 | $24,450 | none |
A broker can't change an appraisal, but can shop lenders with different loan-to-value limits and appraisal practices, or line up a second appraisal. Ask before the closing date, not after.
| Original price | $725,000 |
|---|---|
| Deposits paid | $145,000 |
| Appraisal | $680,000 |
| Cash available | $40,000 |
| Mortgage (80% of the lower of price and appraisal) | $544,000 |
| Land transfer tax (Ontario + Toronto) | $21,950 |
| Cash needed at closing | $60,450 |
| Appraisal you'd need to close with your cash | $705,563 |
| A buyer at $805,000 would need | $288,650incl. a $125,000 appraisal shortfall |
| Closing gap | $20,450the cash you'd still have to find |
A $20,450 gap with weeks to closing is the classic reason to assign. But the buyer of the assignment faces the same appraisal, which limits the price they can pay; run the grid in the calculator to see where the two meet.
Open this example in the calculator →Computed 2026-11-02.
Should you assign, close and resell, or close and hold?
On the default example, measured on the same deposits:
| Path | Cash in | Net position |
|---|---|---|
| Assign before closing | $145,000 | $45,525 |
| Close, then sell after 6 months | $169,450 | -$23,312 |
| Close and hold 36 months | $169,450 | -$7,982 |
Holding looks different because it's unrealized: the equity is still in the unit and carrying costs come out of rent. Reselling soon after closing pays land transfer tax and selling costs twice over the life of the deal, which is why it rarely wins on a flat market. Change growth, rent and the horizon in the calculator to test your own view.
What should you ask a broker before assigning or buying an assignment?
- Which lenders finance this building, and at what loan-to-value on a new-construction appraisal?
- If the appraisal is short, which lenders allow a second appraisal or a higher loan-to-value?
- Can my rate hold be extended to the occupancy or final closing date?
- For a buyer: will the lender treat the deposit reimbursement and uplift as part of my down payment, and how must they be documented?
- Are you licensed at the right level? Most new-construction lenders are institutional, but a private bridge needs a Level 2 agent or broker (check the licence).
Key terms
- Assignment
- The sale of your right to buy a home under a pre-construction agreement, before final closing.
- Assignor / assignee
- The original buyer who sells the right (assignor) and the person who takes it over (assignee).
- Uplift
- The amount the assignment price exceeds the original purchase price.
- Appraisal shortfall
- The part of the price above the lender's appraisal, which the buyer must fund in cash.
What this means for you
- If you can close comfortably and plan to live there or rent it out, holding usually beats a quick resale once land transfer tax and selling costs are counted.
- If the appraisal leaves a gap you can't fund, price the assignment against the break-even ($732,738 on the example) and line up your lawyer before you list.
- If you're the buyer, budget for land transfer tax on the full price and any appraisal shortfall in cash: $224,650 on the default example.
- Set the tax reserve with an accountant; the flipping rule can make the profit fully taxable.
Frequently asked questions
Do you pay HST on an assignment in Ontario?
For new homes, CRA treats assignment sales as taxable for GST/HST, including by individuals, for agreements from 2022-05-07. The part reimbursing the deposit is excluded when the agreement says so in writing; the assignor normally collects the tax.
Is profit from an assignment taxed as income?
Usually. CRA's flipping rule deems profit on residential property, and on rights to buy it, held under 365 days to be business income, with exceptions for life events. Ask an accountant about your case.
Who pays land transfer tax on an assignment?
The final buyer (assignee), on the total consideration: the assignment payment plus the original purchase price and extras. Inside Toronto, ask your lawyer to confirm the City's treatment.
Can I assign my pre-construction condo in Toronto?
Only on the terms in your agreement. Many builders require written consent, charge an assignment fee and limit public marketing before occupancy.
Why can't the buyer get a mortgage for the full assignment price?
Lenders lend a share of the lower of price and appraisal. If the appraisal is below the assignment price, the buyer funds the difference in cash.
Sources
- Government of Ontario — Calculating land transfer tax (effective January 1, 2017). Checked .
- City of Toronto — Municipal land transfer tax (MLTT) rates and fees (effective April 1, 2026). Checked .
- FSRA — Working with a mortgage professional (effective April 1, 2023). Checked .
Estimate, not advice. Educational estimate only, not financial, mortgage, tax or legal advice. Lenders, insurers and governments set their own rules and can change them; confirm with a licensed professional before you decide.
Assignment sources
- Canada Revenue Agency — Residential property flipping rule (effective January 1, 2023). Checked .
- Canada Revenue Agency — GST/HST Notice 323: GST/HST treatment of assignment sales (effective May 7, 2022). Checked .
- Canada Revenue Agency — GST/HST Info Sheet GI-120: Assignment of a purchase and sale agreement for a new house or condominium unit (effective May 7, 2022). Checked .
- Government of Ontario — Determining the value of the consideration for transfers of new homes (assignments) (effective July 8, 2025). Checked .