Dual Residents and the Tax on Selling Canadian Property: A Nova Scotia Guide

Owning property in more than one country is straightforward until you sell. At that point the question of where you are tax resident — and whether two countries believe they have the right to tax the same gain — stops being abstract. For a "dual resident," someone who meets the residency test of two jurisdictions at once, a single property sale in Nova Scotia can trigger filing obligations, withholding, and the genuine risk of being taxed twice on one profit.

This guide explains how Canada treats residents, non-residents, and dual residents who dispose of Canadian real property; how the Canada–United States and Canada–United Kingdom tax conventions allocate the right to tax; and the Nova Scotia–specific rules — provincial withholding-adjacent mechanics and the non-resident deed transfer tax — that change the arithmetic of a sale here.

A note on what this is and is not. Helio is a real estate development company in Halifax. We work with people who own land in the Halifax Regional Municipality (HRM) and want to understand what that land can become and how to develop it. Cross-border tax is not our work, and nothing here is tax or legal advice. The point of this article is to map the terrain accurately, with primary sources, so that an owner contemplating a sale — or contemplating developing rather than selling — knows which questions to bring to a cross-border tax professional. All figures are stated as of 2026-06-23 and are point-in-time; tax rules change.

The three starting positions: resident, non-resident, dual resident

Canada taxes on the basis of residency, not citizenship. The Canada Revenue Agency's guidance is explicit: a non-resident of Canada pays Canadian tax on income from sources in Canada, while a resident is taxed on worldwide income [1]. That single distinction drives almost everything that follows.

• A Canadian resident who sells property includes the gain in worldwide income. Canada's capital gains inclusion rate is 50% — meaning one-half of a capital gain is taxable. A proposed increase of the inclusion rate to two-thirds was deferred and then cancelled by the federal government on March 21, 2025, so the 50% rate continues to apply [2].

• A non-resident is taxed only on Canadian-source income, but Canadian real property is firmly Canadian-source. A gain on the disposition of "taxable Canadian property" is taxable in Canada regardless of where the seller lives [1], and the sale triggers a specific withholding-and-certificate process described below.

• A dual resident is the hard case. The person satisfies the residency rules of two countries simultaneously. Absent a treaty, both countries can assert the right to tax the same gain. With a treaty, a set of "tie-breaker" rules and a foreign tax credit mechanism are meant to resolve the conflict — though, as practitioners stress, relief is not automatic and is rarely perfectly clean.

The rest of this article works through those three positions, then turns to Nova Scotia.

Selling Canadian property as a non-resident: the Section 116 machinery

Whenever a non-resident disposes of taxable Canadian property — most commonly real estate — Canada uses a notification-and-withholding system under Section 116 of the Income Tax Act. This applies to a dual resident whom the CRA treats as a non-resident for the disposition, and understanding it is essential because it controls cash flow at closing.

The 10-day notification. Subsection 116(3) requires the non-resident vendor to notify the CRA within ten days of disposing of the property [3]. Notice is given by filing Form T2062 (Request by a Non-Resident of Canada for a Certificate of Compliance Related to the Disposition of Taxable Canadian Property), or Form T2062A for resource and certain other property [3].

The penalty for missing it. Failing to notify within the ten-day window exposes the vendor to a penalty under subsection 162(7): $25 per day the notification is late, with a minimum of $100 and a maximum of $2,500 [3][4].

The withholding and the Certificate of Compliance. Until the CRA issues a Certificate of Compliance, the purchaser is required to withhold and remit a portion of the purchase price — generally 25% of the proceeds for capital property — as security against the vendor's Canadian tax on the gain [1]. The CRA will not issue the certificate until it receives payment, or security acceptable to the Minister, for the tax payable on the gain [3]. In practice the withheld amount is typically held in trust by the closing lawyer and released once the certificate is in hand. Because the certificate process can take time, sellers are well advised to start the T2062 filing as early in the transaction as possible rather than at closing.

The final return. After the sale, the non-resident still files a Canadian income tax return to report the actual gain. If the tax ultimately owed is less than the amount withheld, the difference is refunded.

The key takeaway for a dual resident: even before treaty relief enters the picture, the Canadian-side mechanics are concrete, time-bound, and unforgiving of missed deadlines.

No treaty: full exposure on both sides

If a dual resident's other country of residence has no tax convention with Canada, there is no agreed framework to decide which country gets to tax the gain, and no treaty-based foreign tax credit to lean on.

The Canadian side still operates exactly as above — Canadian real property is Canadian-source, so Canada taxes the gain, the Section 116 notification and withholding apply, and the deadlines stand [1][3]. But the other country may also tax the same gain under its own residency rules, and without a treaty there is no mechanism that obliges either jurisdiction to step back. Domestic foreign-tax-credit rules in one or both countries may provide partial relief, but the result is more complex filing, a heavier compliance burden, and a real risk of economic double taxation. This is the scenario where professional cross-border advice is least optional.

The Canada–United States Tax Convention

The Canada–U.S. Convention is the most-used treaty in this context, and its full consolidated text is published by the federal Department of Finance [5].

Who taxes the gain. The Convention's capital gains article ties the right to tax real property to where the property is located: a gain on real property situated in Canada may be taxed by Canada, regardless of the seller's residence [5]. Gains on certain business property are taxed where the business operates; gains on other personal property are generally taxed by the seller's country of residence [5]. For a dual resident selling a Nova Scotia property, this means Canada's primary right to tax is clear.

Relief from double taxation. The Convention's elimination-of-double-taxation article requires each country to allow a foreign tax credit for income tax paid to the other on the same income [5]. In practice, tax paid in Canada on the gain is credited against the U.S. liability on that gain (and vice versa where applicable). The relief is real but not always complete — differences in how the two systems calculate the gain, in timing, and in surtaxes mean careful planning is needed to avoid a residual second layer of tax.

Compliance is its own task. Canadian-side obligations (the Section 116 certificate, the 10-day notice, and the final Canadian return) run in parallel with U.S. reporting. Claiming a treaty position on the U.S. side typically requires disclosing it on the U.S. return. A dual resident needs the two filings to reconcile, which is precisely where cross-border accountants earn their fee.

The Canada–United Kingdom Tax Convention

The Canada–U.K. Convention follows the same architecture and is likewise published in full by the Department of Finance, together with the 2003 protocol that amended it [6][7].

Canada keeps the right to tax its own real estate. Under the Convention's capital gains rules, gains from the alienation of real property may be taxed by the country in which the property is situated [6]. So a U.K. resident — including a dual resident — who sells Halifax property is taxable in Canada on that gain, even if the U.K. also considers the person resident.

Relief. The Convention provides for the U.K. to give credit for Canadian tax paid on income or gains that Canada is entitled to tax, preventing the same gain from being fully taxed twice [6]. As with the U.S. treaty, the credit is the mechanism, and it must be actively claimed with proper documentation — proof of Canadian tax paid and currency conversion at the appropriate date.

Withholding still applies. The Canadian Section 116 process applies to U.K. residents the same way it applies to any other non-resident: the purchaser withholds against the proceeds until the Certificate of Compliance is issued [3]. On a large transaction, that withheld sum can be substantial and locked up for weeks, which matters to a seller's liquidity.

The Nova Scotia layer: the non-resident deed transfer tax

Federal treaties allocate the income tax on the gain. Nova Scotia adds a provincial transaction tax on the purchase that non-resident buyers (and, indirectly, sellers dealing with them) must factor in.

On April 1, 2025, Nova Scotia increased its Non-resident Provincial Deed Transfer Tax from 5% to 10% [8]. The Province's guidance and the Budget 2025 notice set out the key terms:

• The increased 10% rate applies to all Agreements of Purchase and Sale signed after March 31, 2025, and to other transfers after that date where there is no agreement of purchase and sale [8].
• The tax applies to residential property of three dwelling units or fewer (including vacant land deemed residential) acquired by a non-resident [8].
• It is calculated on the greater of the purchase price or the assessed value of the property [8].
• There is an exemption for a non-resident individual who moves to Nova Scotia within six months of the closing; the exemption is at the individual buyer level, and proof of residency is required [8].

This is distinct from the municipal deed transfer tax that all buyers pay (set by each municipality under provincial legislation) — the non-resident provincial tax is on top of that municipal charge for affected non-resident buyers [9]. The Province has framed the measure as tilting the field toward local buyers. For a dual resident who is classified as a non-resident, it is a real, up-front cost on acquisition that should be modelled before committing to a purchase, and it can influence what a non-resident buyer is willing to pay — a consideration for any seller in that market.

A short comparison

Question	No treaty	Canada–U.S. Convention	Canada–U.K. Convention
Who may tax a gain on Nova Scotia real property	Canada taxes (Canadian-source); the other country may also tax under its own rules [1]	Canada may tax property situated in Canada [5]	Canada may tax property situated in Canada [6]
Double-tax relief	No treaty mechanism; only domestic foreign-tax-credit rules, if any	Foreign tax credit for tax paid to the other country [5]	U.K. credit for Canadian tax paid [6]
Canadian withholding on sale	Section 116: ~25% withheld until Certificate of Compliance [1][3]	Same Section 116 process [3]	Same Section 116 process [3]
Compliance load	Highest; ambiguous in the other jurisdiction	Moderate; treaty position must be claimed on the U.S. return [5]	Moderate; credit must be claimed on the U.K. return [6]

The pattern is consistent: Canada's right to tax a gain on Canadian real estate is strong in every scenario, because the property is situated here. The treaties do not remove that right — they coordinate it with the other country so the same gain is not fully taxed twice. Without a treaty, that coordination is missing.

What this means for a Nova Scotia property owner — including the option to develop

If you are a dual resident weighing a sale of Nova Scotia property, the practical sequence is clear:

1. Determine your residency for the disposition with a cross-border tax professional — this drives whether the Section 116 non-resident process applies to you.
2. Plan the Section 116 filing early. The 10-day notification, the T2062, and the Certificate of Compliance all gate the release of withheld funds at closing [3].
3. Identify the governing treaty (if any) and the foreign tax credit you will claim, so the Canadian and foreign returns reconcile [5][6].
4. Model the Nova Scotia non-resident deed transfer tax if it touches the transaction [8].

There is also a question worth raising before any of this: should the property be sold at all? Many Halifax-area owners are sitting on land whose highest and best use has changed. HRM's 2024 Housing Accelerator Fund amendments now permit a minimum of four dwelling units on every centrally serviced residential lot as-of-right [10], and in the Regional Centre the ER-3 zone permits up to eight units on larger lots [11]. A parcel that was worth selling as a single-family lot may now support a small multi-unit building.

That is where a development firm, rather than a tax advisor, is the right call. Helio's work is to establish what a given parcel can actually support under current zoning and to structure and coordinate the resulting project under a defined mandate on land the owner already holds — turning a "sell now and trigger a cross-border gain" decision into a "hold and build" alternative that may carry a very different tax profile. The two paths have to be weighed together, with the tax professional and the development analysis in the same room. We do not give tax advice; we make the development side of the decision concrete, with numbers grounded in the by-law and in cited cost data rather than in a sale price we have to defend.

Frequently asked questions

How can a dual resident reduce double taxation when selling Canadian property? By identifying the governing tax treaty and claiming the foreign tax credit it provides. Both the Canada–U.S. and Canada–U.K. conventions allow a credit for income tax paid to the other country on the same gain, which is the principal mechanism that prevents the gain from being fully taxed twice [5][6]. Relief must be actively claimed with documentation; it is not automatic. Consult a cross-border tax professional.

Does Nova Scotia's higher non-resident deed transfer tax affect dual residents? Yes, if the dual resident is classified as a non-resident and is acquiring affected residential property. As of April 1, 2025, the provincial non-resident deed transfer tax is 10%, calculated on the greater of purchase price or assessed value, on residential property of three units or fewer; an exemption exists for a buyer who moves to Nova Scotia within six months [8]. As of 2026-06-23, this remains the current rate.

What if there is no tax treaty between Canada and the other country? Canada still taxes the gain on Canadian real property because it is Canadian-source, the Section 116 notification and withholding still apply, and the deadlines still stand [1][3]. Without a treaty there is no agreed framework allocating the tax or providing a treaty-based credit, so the risk of economic double taxation and the compliance burden are highest. Professional advice is strongly recommended.

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Sources

1. Canada Revenue Agency — T4058: Non-Residents and Income Tax (non-residents are taxed on Canadian-source income; residents on worldwide income; disposition of taxable Canadian property): https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/t4058/non-residents-income-tax.html
2. Department of Finance Canada — capital gains inclusion-rate deferral announcement (the proposed increase was deferred and subsequently cancelled; the 50% rate continues): https://www.canada.ca/en/department-finance/news/2025/01/government-of-canada-announces-deferral-in-implementation-of-change-to-capital-gains-inclusion-rate.html
3. Canada Revenue Agency — Information Circular IC72-17R6, Procedures Concerning the Disposition of Taxable Canadian Property by Non-Residents of Canada – Section 116 (10-day notification, T2062/T2062A, Certificate of Compliance, security for tax on the gain): https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/ic72-17/ic72-17r6-procedures-concerning-disposition-taxable-canadian-property-non-residents-canada-section-116.html
4. Canada Revenue Agency — Failure to comply penalty – Non-resident vendor notification on the disposition of taxable Canadian property ($25/day; minimum $100; maximum $2,500): https://www.canada.ca/en/revenue-agency/services/tax/international-non-residents/competent-authority-agreements-notices/failure-comply-penalty-non-resident-vendor-notification-on-disposition-taxable-canadian-property.html
5. Department of Finance Canada — Convention Between Canada and the United States of America (consolidated): https://www.canada.ca/en/department-finance/programs/tax-policy/tax-treaties/country/united-states-america-convention-consolidated-1980-1983-1984-1995-1997.html
6. Department of Finance Canada — Convention Between the Government of Canada and the Government of the United Kingdom (consolidated 1978/1980/1985): https://www.canada.ca/en/department-finance/programs/tax-policy/tax-treaties/country/united-kingdom-convention-consolidated-1978-1980-1985.html
7. Department of Finance Canada — Protocol Amending the Canada–United Kingdom Convention (2003): https://www.canada.ca/en/department-finance/programs/tax-policy/tax-treaties/country/united-kingdom-protocol-2003.html
8. Government of Nova Scotia — Non-resident Provincial Deed Transfer Tax (rate increased from 5% to 10% on April 1, 2025; applies to residential property of ≤3 units; calculated on the greater of purchase price or assessed value; 6-month move-to-NS exemption): https://www.novascotia.ca/non-resident-provincial-deed-transfer-tax
9. Government of Nova Scotia — Municipal deed transfer and property tax (the separate municipal deed transfer tax): https://www.novascotia.ca/municipal-deed-transfer-and-property-tax
10. Halifax Regional Municipality — Recent changes to planning documents for housing (Housing Accelerator Fund) (minimum of four dwelling units on centrally serviced residential lots, effective June 13, 2024): https://www.halifax.ca/about-halifax/regional-community-planning/housing-accelerator-fund/urgent-changes-planning-0
11. Halifax Regional Municipality — HAF Amendments: Regional Centre Established Residential (ER) Zones Fact Sheet, June 2024 (ER-3 permits up to eight dwelling units per lot, lot-size dependent): https://cdn.halifax.ca/sites/default/files/documents/about-the-city/regional-community-planning/er-zones-fact-sheet-june-2024.pdf