Do I Need Two Wills? Cross-Border Estate Planning for Canada-US

A single will can technically cover assets in both countries. There is no law that says you must have two wills. But a single will covering both Canadian and US assets creates practical problems: probate in each country, recognition of foreign documents, different rules for what a valid will looks like, and the risk that one country’s probate process delays or invalidates the other country’s administration. The standard cross-border estate planning approach is two wills, one for each country, each drafted under the laws of that country, each dealing only with the assets in that jurisdiction.

Why not just one will?

A single will can be submitted for probate in both countries. The original goes to one jurisdiction and a certified copy (or a foreign-probated grant) goes to the other. The problems:

• Delay. The second jurisdiction must wait for the first to probate the will and release a certified copy. If the first jurisdiction is slow (some Canadian provinces take 6 to 12 months for a grant of probate), the US assets are frozen until the Canadian probate is complete (or vice versa).
• Foreign probate recognition. Not all US states recognize a Canadian grant of probate automatically. Some require an ancillary probate proceeding, which is a separate court process to re-prove the will under local law. Two separate wills, each probated locally, avoid this step.
• Validity requirements. Canadian provinces and US states have different rules for what makes a will valid (number of witnesses, notarization, holographic will rules). A will drafted under Ontario law may not meet Florida’s requirements, or vice versa. Two wills, each compliant with local formalities, eliminate this risk.
• Probate fees. Ontario charges probate fees (Estate Administration Tax) on the value of assets passing through the will. A single will that includes US assets may drag US asset values into the Ontario probate fee calculation (the fee is 1.5% on assets over $50,000). Two wills keep the US assets out of Ontario probate.

How do two wills work together?

Each will contains a “situs clause” or “scope clause” limiting it to assets in its country. The standard language:

• Canadian will: “This will governs all my property situated in Canada. It does not revoke any will I have made or may make governing my property situated outside Canada.”
• US will: “This will governs all my property situated in the United States. It does not revoke any will I have made or may make governing my property situated outside the United States.”

The two wills are independent documents. They can have different executors (a Canadian executor for the Canadian estate, a US executor for the US estate), different beneficiaries if desired, and different distribution structures. Each estate is administered under the law of its own jurisdiction.

What about the executor?

The executor (called the “estate trustee” in Ontario, the “liquidator” in Quebec, or the “personal representative” in many US states) is the person who administers the estate. Cross-border considerations:

• Residency requirements. Some jurisdictions restrict who can serve as executor. Ontario requires the estate trustee to be a Canadian resident (or to post a bond). Some US states require the executor to be a US resident or a relative of the deceased. Two wills with two executors (one in each country) avoids the residency problem.
• Practical access. An executor in Canada cannot easily open a US estate bank account, deal with US financial institutions, or appear in US probate court (and vice versa). Two local executors, each dealing with local institutions, is simpler.
• Tax filing. The Canadian executor files the final T1 and any trust returns (T3). The US executor files the final 1040, the estate income tax return (Form 1041), and if applicable, the estate tax return (Form 706 or 706-NA). Each executor handles the returns in their own country.

What about powers of attorney?

A power of attorney (POA) is a separate document from a will. It governs decisions while you are alive but incapacitated. The cross-border issue is the same: a Canadian POA may not be recognized by US institutions, and a US POA may not be recognized by Canadian banks or hospitals.

The standard approach is two POAs:

• A Canadian POA (called a “continuing power of attorney for property” in Ontario, a “mandate” in Quebec, or an “enduring power of attorney” in other provinces) for Canadian assets and decisions.
• A US POA (a “durable power of attorney” in most states) for US assets and decisions.

For healthcare, a Canadian “power of attorney for personal care” or “healthcare directive” covers medical decisions in Canada, and a US “healthcare proxy” or “advance directive” covers medical decisions in the US. Provincial and state laws vary on the specific requirements.

What about the estate tax and deemed disposition?

The will structure does not change the tax treatment at death, but it affects the administration:

• Canada. At death, all assets are deemed sold at FMV (ITA 70(5)). This applies to both Canadian and US assets held by a Canadian resident. The deemed disposition is reported on the final T1, regardless of where the assets are located. The deemed disposition at death guide covers the mechanics.
• US. If the deceased was a US citizen or resident, the estate tax applies to worldwide assets. If the deceased was a non-resident non-citizen (a Canadian resident who was not a US citizen or green card holder), the US estate tax applies only to US-situs assets (US real property, US stocks, tangible personal property located in the US). The US estate tax for Canadians guide covers the treaty credit and the exemption.
• Coordination. The treaty provides a credit mechanism to prevent double taxation. The Canadian deemed disposition tax and the US estate tax on the same assets are coordinated through the treaty’s estate tax provisions. This coordination happens at the tax return level, not at the will level, but the will structure (two executors, each filing in their own jurisdiction) makes the coordination administratively cleaner.

What about the cross-border estate freeze?

An estate freeze locks in the current value of assets for the owner and shifts future growth to the next generation (or to a trust). For cross-border purposes, the freeze must be designed to work under both countries’ tax rules. A freeze that works perfectly under Canadian tax law (using a share reorganization under ITA 51 or ITA 86) may create a taxable event under US rules if the owner is a US person. The will structure accommodates the freeze by ensuring each country’s will deals with the frozen shares (or the growth shares) in its own jurisdiction.

What should I do next?

If you have assets in both Canada and the US, review whether your current will covers both jurisdictions properly. If you have a single will, check whether it contains the “I revoke all prior wills” boilerplate, and consider splitting it into two jurisdiction-specific wills. If you have two wills, confirm that neither revokes the other. Review your POA and healthcare directive for cross-border recognition.

• Cross-border estate planning: freezes, trusts, and bypass trusts, the advanced structures
• US estate tax for Canadians (Form 706-NA), the estate tax that applies to US-situs assets
• Deemed disposition at death: Canada vs US step-up, the two systems’ treatment of assets at death
• Ontario probate fees and avoidance strategies, the Ontario-specific probate calculation
• Cross-border power of attorney, the POA recognition problem
• Cross-border inheritance, the full picture of how Canada and the US tax an estate that crosses the border

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.