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One of the most common questions we receive from Americans living in Canada is some version of this: “I have a will — do I need a new one, or a different one, now that I live in Canada?”

It’s a great question. The honest answer is: it depends on your situation — but for most Americans living in Canada, the answer is yes, and the reasons why matter a great deal.

The United States and Canada have fundamentally different approaches to taxing and transferring wealth at death. When you live in Canada as a U.S. citizen, your estate is simultaneously subject to both systems. Without proper planning, your family could face serial probate delays, double taxation, and administrative gridlock that takes years to untangle.

This article walks through the key concepts every American in Canada needs to understand — including why your existing U.S. will may not be enough, how the two tax systems interact, and what a well-structured plan actually looks like.

The Core Problem: Two Countries, Two Tax Systems, One Estate

When a U.S. citizen living in Canada passes away, their estate is simultaneously subject to two distinct tax regimes — and they work in fundamentally different ways.

How Canada Taxes Death: The Deemed Disposition

Canada does not have an estate tax or an inheritance tax. Instead, the Income Tax Act treats death as a “deemed disposition” — meaning the CRA considers you to have sold all of your capital property at fair market value immediately before you died. Any accrued capital gains are reported on your final (terminal) tax return and taxed at your marginal income tax rate.

For a long-time investor with a large non-registered portfolio, a cottage, or a private company, this deemed disposition can trigger a substantial tax bill.

How the U.S. Taxes Death: The Federal Estate Tax

The United States takes a completely different approach. Rather than taxing gains, the U.S. levies an estate tax on the total fair market value of a deceased U.S. citizen’s worldwide assets — regardless of where they live. This includes real estate, investment accounts, life insurance (if you held incidents of ownership in the policy), and everything else you own globally.

The U.S. federal estate tax exemption for 2026 is currently set at US$15,000,000 per person. While the legislative landscape can change, the exemption level and any future adjustments are important inputs to an estate plan for any U.S. citizen with a sizeable estate. Even below the current threshold, the interaction between U.S. estate tax rules and Canadian deemed disposition on the same assets makes proactive planning essential.

Because Canada taxes the gain and the U.S. taxes the value, the risk of double taxation is real and acute — particularly for those with appreciated U.S. real estate or large investment portfolios. This is why coordinated planning is not optional; it is essential.

Do You Need One Will or Two?

A single will can technically be valid across borders. But for the vast majority of Americans living in Canada, professional consensus strongly favors dual wills: one for Canadian assets and a separate “situs will” for U.S. assets. Here is why.

The Problem with a Single Will

If you use a single Canadian will to cover your entire worldwide estate, your executor faces a serial probate process. They must first complete Canadian probate, and only then can they apply separately for “ancillary probate” or resealing in each U.S. state where you hold assets. This sequential process can freeze your U.S. assets for six to nine months or longer — during which time investments sit idle and taxes come due.

A single will also creates jurisdictional confusion. Canada’s probate courts apply Canadian law; U.S. probate courts apply the law of the relevant state. Attempting to run one document through both systems invites complications that a properly structured dual-will approach avoids entirely.

The Case for Dual (Situs) Wills

Dual wills allow your executors to initiate probate in Canada and the United States simultaneously, dramatically compressing the timeline for your beneficiaries to access assets. They also allow you to appoint different executors for each jurisdiction — which has significant tax implications we cover below. And they eliminate the risk that courts or financial institutions misapply the wrong country’s laws to the wrong assets.

A single Canadian will may be sufficient if your U.S. connections are genuinely minimal — for instance, if you hold only a small IRA and no U.S. real estate. But if you own U.S. property, hold substantial U.S. investment accounts, or have U.S. beneficiaries, dual wills are almost certainly the right approach.

The Most Dangerous Clause in Any Will: The Revocation Clause

Here is the single most common — and most costly — drafting error in cross-border wills: the inadvertent revocation of a foreign will.

Every standard will template begins with a clause along the lines of: “I hereby revoke all former Wills and Codicils.” If you sign a Canadian will with this boilerplate language, and later sign a U.S. will containing the same language, your U.S. will may legally nullify your Canadian will — leaving your Canadian estate to be distributed as if you had no will at all (i.e., under provincial intestacy rules). Your carefully expressed wishes are simply overridden.

The solution is precise, jurisdiction-specific revocation language in each document:

• Your Canadian will should state that it revokes all prior testamentary instruments except those specifically intended to govern U.S. situs property, referencing the U.S. will by date or jurisdiction.
• Your U.S. will should clarify that it applies only to U.S. situs property and does not disturb the Canadian will in any way.

A further refinement used by experienced practitioners: include a clause stating that the U.S. will can only be revoked by a subsequent document that specifically references it by date — providing an extra layer of protection against future boilerplate revocations.

Defining What Goes Where: The Situs Clause

Each will needs to clearly define the assets it governs so that executors are not double-claiming authority or, worse, leaving assets orphaned between jurisdictions.

Pay particular attention to U.S. publicly traded shares held in a Canadian brokerage account. For U.S. estate tax purposes, shares in U.S. corporations are typically treated as U.S. situs assets regardless of where the account statements are physically located. Your U.S. will’s situs clause should explicitly capture these assets.

Who Should Be Your Executor? It Matters More Than You Think

The choice of executor is not just an administrative decision — it has direct tax consequences for your estate.

The Central Management and Control Test

In Canada, the residency of an estate is a question of fact determined by where its central management and control is actually exercised — not simply by the address on an executor’s driver’s licence. In practice, CRA tends to look at where key decisions are made, where records are kept, and where the executor conducts the estate’s affairs. A U.S.-resident sole executor who manages everything from Arizona creates a real risk that CRA treats the estate as non-resident, with potentially serious consequences.

If an estate is determined to be non-resident, the implications can include:

• Loss of Graduated Rate Estate status: An estate that qualifies as a Graduated Rate Estate (GRE) benefits from progressive tax brackets for up to 36 months. A non-resident estate is unlikely to qualify, meaning all income may be taxed at the highest marginal rate.
• Real estate holdback: A non-resident executor selling the deceased’s Canadian property must obtain a CRA Certificate of Compliance — and until it is issued, a significant portion of the gross sale price can be withheld.
• Additional withholding taxes: Various Canadian-source payments made to a non-resident estate may be subject to Part XIII withholding.
• U.S. foreign trust reporting: A U.S. resident executor may trigger IRS reporting obligations on Canadian estate assets, adding accounting fees and potential penalty exposure.

Appointing a Canadian-resident co-executor — ideally someone in BC — who is actively involved in managing the estate is an important step toward ensuring the estate is treated as a Canadian resident. It is not a guarantee on its own, since residency remains a facts-and-circumstances test, but it materially strengthens the position. Your tax advisors should be engaged early to monitor this issue.

Executor Selection and BC Practice

Under WESA, security (a bond) is not automatically required simply because an executor lives outside BC. Section 128 of WESA provides that no security is required unless a minor or incapable person has an interest in the estate, or the court orders otherwise. That said, courts do retain discretion to require a bond in appropriate circumstances, and practical experience shows that non-resident executors can face friction with financial institutions, registries, and the probate process generally.

From a practical standpoint, appointing a BC-resident co-executor on your Canadian will serves multiple purposes: it facilitates smoother interactions with local registries and institutions, supports the case for Canadian estate residency (for tax purposes), and reduces the likelihood of court-ordered security. Your U.S. will can name a separate U.S.-resident executor or professional trust company to handle the American side concurrently.

The Canada-U.S. Tax Treaty: Your Most Important Planning Tool

Article XXIX-B of the Canada-United States Tax Convention provides specific mechanisms designed to prevent double taxation at death. Understanding these provisions is critical — and your will should explicitly authorize your executor to claim every benefit available.

U.S. Estate Tax for U.S. Citizens: Form 706

A U.S. citizen who dies while living in Canada is subject to U.S. estate tax on their worldwide assets under domestic U.S. law — and they file Form 706 (United States Estate Tax Return), not Form 706-NA. Form 706-NA is reserved for decedents who were neither U.S. citizens nor U.S. residents. This distinction matters because a U.S. citizen is entitled to the full unified credit under domestic law, not a prorated share of it.

The Treaty’s prorated unified credit under Article XXIX-B(2) applies specifically to Canadian-resident decedents who are not U.S. citizens — that is, Canadians with U.S. situs assets. For U.S. citizens, the relevant Treaty provisions operate differently, primarily addressing relief from double taxation where both countries are taxing the same assets or the same transfer.

Treaty Relief from Double Taxation for U.S. Citizens

While U.S. citizens do not need the Treaty to access the full unified credit (they have it under domestic law), Article XXIX-B still provides important relief in other ways. Article XXIX-B(6) provides that Canada will allow a credit against Canadian income tax for U.S. estate tax paid on property situated in the United States — helping prevent the same asset from bearing both Canadian deemed-disposition income tax and U.S. estate tax. Article XXIX-B(7) provides a parallel U.S. credit for Canadian income tax paid on assets situated outside the United States.

The interaction of these provisions is technically complex and must be carefully coordinated by your Canadian and U.S. advisors. The executor must file Form 706 within nine months of death (extensions are available). Missing this deadline can cost the estate significant Treaty-based relief and should be treated as a hard deadline from day one.

The Marital Credit and the QDOT

The U.S. unlimited marital deduction allows a surviving spouse to inherit free of estate tax — but only if the surviving spouse is a U.S. citizen. If your spouse is a Canadian non-resident alien, this deduction is unavailable by default, which can create a significant and unexpected tax liability.

The Treaty provides a partial solution through a marital credit under Article XXIX-B(3) and (4): in certain circumstances, additional credit is available when assets are left to a surviving Canadian spouse, effectively increasing the amount sheltered from U.S. estate tax. For very large estates, the will may establish a Qualified Domestic Trust (QDOT), which allows the estate to qualify for the marital deduction by ensuring assets remain within the U.S. tax net through a U.S. trustee, deferring estate tax until the surviving spouse takes a principal distribution or passes away. Whether the Treaty marital credit or a QDOT is the better solution depends heavily on the size of the estate and the citizenship of the surviving spouse — this is an area where specialist advice is essential.

Cross-Border Charitable Giving

The Treaty also allows bequests to Canadian registered charities to be deducted from your U.S. gross estate, provided the charity would qualify for exempt status in the United States. For clients with philanthropic intentions, this is a powerful tool that reduces the tax burden in both countries simultaneously and ensures your generosity is recognized across borders.

What About Your RRSPs, TFSAs, IRAs, and 401(k)s?

Registered accounts and retirement plans pass outside of your will through beneficiary designations — which means they require their own careful cross-border planning.

TFSAs and RESPs: A U.S. Reporting Problem

While TFSAs and RESPs are tax-exempt in Canada, the United States does not recognize them as such under the current Treaty. Income and gains inside a TFSA are taxable annually on your U.S. Form 1040. Worse, the IRS may classify these accounts as “foreign trusts,” triggering onerous annual reporting on IRS Forms 3520 and 3520-A. If you name a U.S. beneficiary on your TFSA, that person may inherit not just cash but a significant reporting obligation.

Inherited IRAs and 401(k)s: The Canadian Beneficiary Problem

When a Canadian resident inherits a U.S. IRA or 401(k), the challenges run in the other direction. Under the U.S. SECURE Act, most non-spouse beneficiaries must fully withdraw inherited IRA funds within ten years of the original owner’s death. Many U.S. financial institutions are unwilling or unable to maintain accounts for beneficiaries residing in Canada due to securities regulations — which can force an immediate lump-sum distribution, triggering tax at the highest marginal rates in both countries simultaneously.

Cross-border planning must include identifying custodians that are genuinely cross-border capable, so your Canadian beneficiaries can make use of the ten-year withdrawal window rather than being forced into a taxable lump sum.

The Hidden Danger in Your Revocation Clause — Again

In Canadian law, beneficiary designations on RRSPs, RRIFs, and life insurance policies are considered testamentary dispositions. A general revocation clause in a new will — “I revoke all testamentary dispositions” — could be interpreted by a court or financial institution as inadvertently revoking your existing beneficiary designations on those accounts.

The fix is explicit protective language in your will: “I revoke all former Wills and testamentary dispositions, specifically excluding any beneficiary designations I have previously made on insurance policies or registered plans, unless I expressly refer to them in this Will.” Every cross-border will should contain this language.

A Note on BC Law: WESA and the Wills Variation Risk

For Americans living in British Columbia, WESA adds two important wrinkles worth understanding.

The good news first: under WESA Section 80, BC courts will generally recognize the formal validity of a will made in accordance with the laws of the jurisdiction where it was executed, the testator’s domicile, or the testator’s country of citizenship. A properly executed U.S. will can be recognized in BC. But this recognition addresses only the form of the will — it does not resolve how taxes are calculated or how assets are distributed, which still requires coordinated planning.

The risk: under WESA Section 60, a spouse or child can apply to BC’s Supreme Court to vary your will if they believe you failed to make adequate provision for their maintenance and support. This “moral obligation” doctrine can override your express testamentary wishes in ways that have no equivalent in most U.S. states. Americans in Canada need to be aware that their estate plan may face challenges on grounds that simply do not exist under American law.

The Administrative Reality: Forms, Deadlines, and Coordination

A well-structured cross-border estate plan is only as effective as the post-mortem administration that follows it. The filing burden for a U.S. citizen in Canada is significantly higher than for a domestic estate, and missed deadlines carry severe consequences.

These filings must be coordinated, not filed in isolation. The Treaty’s Article XXIX-B provides specific credit mechanisms to prevent both countries from fully taxing the same asset: Canada provides a credit against Canadian income tax for U.S. estate tax paid on U.S.-situated property, and the U.S. provides a credit for Canadian income tax paid on assets situated outside the United States. Getting these credits right requires careful sequencing — your Canadian and U.S. advisors need to work together from the moment of death, not after each jurisdiction has already filed independently. A poorly coordinated process can result in the estate paying in full in one country before having the documentation needed to claim relief in the other, creating a liquidity problem at the worst possible time for your family.

What Does a Well-Structured Cross-Border Estate Plan Look Like?

Every situation is different, but a well-coordinated plan for an American in British Columbia typically brings together the following elements:

1. Coordinated Dual Wills. A Canadian will for Canadian assets and a U.S. will for U.S. situs assets, linked by carefully drafted non-revocation and situs clauses. Each document is signed to satisfy the formal requirements of its jurisdiction.
2. Strategic Executor Selection. A BC-resident co-executor who is actively involved in managing the Canadian estate helps support Canadian estate residency for tax purposes, facilitates smoother dealings with local registries and institutions, and reduces the risk of court-ordered security. A separate U.S.-resident executor or professional trust company handles the American side concurrently.
3. Treaty-Aware Drafting. Provisions that explicitly authorize the executor to make the elections and file the returns needed to claim Treaty-based relief from double taxation under Article XXIX-B of the Canada-U.S. Tax Convention, including the marital credit for a surviving Canadian spouse and coordination of Canadian and U.S. tax credits.
4. Beneficiary Designation Review. A coordinated review of all registered accounts and retirement plans — RRSPs, RRIFs, TFSAs, IRAs, and 401(k)s — to minimize foreign trust reporting burdens, avoid inadvertent revocation, and identify cross-border-capable custodians where needed.
5. Ongoing Review. U.S. estate tax thresholds, Treaty provisions, and Canadian tax rules all change over time. A cross-border estate plan is not a one-time exercise — it should be reviewed whenever the law changes materially, your asset base shifts, or your personal circumstances evolve.

The Bottom Line

Your will is the foundation of your estate plan. But for Americans living in Canada, a document that works perfectly well in one country may be dangerously inadequate — or actively harmful — in the other.

The good news is that these problems are entirely solvable. With coordinated dual wills, the right executor structure, Treaty-aware drafting, and a thoughtful review of your registered accounts, you can protect your family from serial probate delays, double taxation, and years of administrative burden.

The key is getting the right team in place: a Canadian estate lawyer who understands cross-border issues, a U.S. tax specialist familiar with the Treaty, and a wealth manager who can bring the whole plan together.

At Beacon Hill, we work with Americans living in Canada every day. We understand the unique financial, tax, and legal landscape you navigate — and we work closely with your legal and tax advisors to ensure your estate plan and your investment strategy are fully aligned on both sides of the border.

This article is provided for general informational and educational purposes only and does not constitute legal, tax, or financial advice. Cross-border estate planning involves complex legal and tax considerations that are highly specific to individual circumstances. Nothing in this article should be construed as a recommendation to take any specific action. Readers should consult with a qualified Canadian estate lawyer, a U.S. tax specialist, and their financial advisor before making any estate planning decisions. Tax thresholds and legislative provisions referenced are subject to change.