Canadian Snowbirds and U.S. Estate Tax: The $60,000 Threshold That Catches Ontario Retirees Off Guard in 2026

The $60,000 Threshold: Why the IRS Taxes Canadian Snowbirds at Death

The United States imposes an estate tax on non-resident aliens — including Canadian citizens — who own U.S.-situs assets at the time of death. Under IRC section 2101, the tax applies when U.S.-situs assets exceed USD $60,000. The rates are graduated from 18% to 40%, and the non-resident unified credit is only $13,000 — enough to shelter precisely $60,000 of U.S. property.

Compare this to a U.S. citizen, who receives a unified credit sheltering approximately $13.61 million in 2026. The disparity is enormous. A Canadian retiree who owns a $400,000 Florida condo, a U.S. brokerage account with $200,000 in Apple and Amazon shares, and a boat docked in Fort Lauderdale has over $600,000 in U.S.-situs assets — and without treaty relief, faces a U.S. estate tax bill exceeding $100,000. For a broader overview of cross-border estate issues between Canada and the U.S., see our cross-border estate planning guide.

What Counts as a U.S.-Situs Asset

The definition of "U.S.-situs" property determines whether the estate tax applies to you. Here is what the IRS counts:

The critical planning insight: how you hold U.S. investments matters as much as what you hold. Owning Apple shares directly in a Canadian brokerage non-registered account creates U.S.-situs exposure. Holding the same economic exposure through a Canadian-listed ETF like VFV does not. This distinction alone can eliminate the U.S. estate tax problem for many snowbirds. For more on how U.S. vacation property creates estate tax exposure, see our U.S. vacation property estate tax guide.

The Treaty Unified Credit: How the Canada-U.S. Tax Treaty Reduces (or Eliminates) the Tax

Article XXIX-B of the Canada-U.S. tax treaty provides a prorated share of the full U.S. unified credit to Canadian residents. The formula is:

The treaty credit works in the snowbird's favour when the worldwide estate is large relative to U.S. assets. The larger the worldwide estate denominator, the smaller the fraction — but the shelter amount still tends to exceed the tax on the U.S. assets for estates under $13.61 million.

When the Treaty Credit Does Not Fully Protect You

The prorated credit fails to eliminate the tax in two scenarios:

• Worldwide estate exceeds USD $13.61 million: The prorated credit is capped at the fraction of the full credit. If the worldwide estate is $20 million and U.S. assets are $5 million, the prorated credit is $5,389,800 × ($5M ÷ $20M) = $1,347,450. But the tentative tax on $5 million of U.S. assets is approximately $2,045,800 — leaving roughly $698,350 in U.S. estate tax payable.
• U.S. assets are a very large proportion of the worldwide estate: If a Canadian's worldwide estate is $500,000 and U.S. assets are $400,000, the prorated credit is $5,389,800 × 80% = $4,311,840 — still more than enough. But if the worldwide estate drops below the U.S. assets (which can happen if the Canadian has debts), the formula breaks down and the non-resident credit of $13,000 applies instead.

Worked Example: $400,000 Clearwater Condo in a $2 Million Worldwide Estate

Robert, age 74, is an Ontario retiree who owns a condo in Clearwater, Florida. Here are his assets at death:

Without Treaty Relief

U.S. estate tax on $545,000 of U.S.-situs assets minus the $13,000 non-resident credit: tentative tax of approximately $102,280. This is a devastating number for a family that assumed their Canadian tax filings covered everything.

With Treaty Relief (Article XXIX-B)

Prorated credit = $5,389,800 × ($545,000 ÷ $1,925,000) = $1,526,301. The tentative tax on $545,000 is approximately $115,280. Since the prorated credit ($1,526,301) vastly exceeds the tentative tax ($115,280), the U.S. estate tax is $0.

Ontario Probate on U.S. Property: What the Estate Trustee Needs to Know

Ontario's Estate Administration Tax (probate fees) is $15 per $1,000 of estate value above $50,000. But it only applies to assets that form part of the Ontario probate estate — which generally means assets located in Ontario or that require an Ontario Certificate of Appointment for distribution.

U.S. real property held in personal title does not attract Ontario probate fees. The Florida condo requires a separate ancillary probate proceeding in Florida (or whichever U.S. state the property is located in). Florida's probate process involves filing with the local county court, and the costs depend on the estate value and attorney fees — typically 1.5% to 3% of the property value.

However, if the U.S. property is held through a Canadian holding company, the shares of that company are Ontario-situs assets and are subject to Ontario probate. A $400,000 condo held through a Canadian corporation adds $400,000 to the Ontario probate estate — costing approximately $5,250 in Ontario probate fees. For a detailed breakdown of Ontario probate costs, see our Ontario probate fees guide.

Three Ownership Structures: Cost-Benefit Comparison for a $400K Clearwater Condo

There are three common ways Canadian snowbirds hold U.S. property. Each has different implications for estate tax, probate, ongoing compliance, and capital gains. Here is the comparison:

Option 1: Personal Title (Direct Ownership)

• U.S. estate tax: Exposed — but treaty prorated credit eliminates it for worldwide estates under ~$13M
• U.S. probate: Required — ancillary probate in Florida (~$6,000–$12,000 in legal fees)
• Ontario probate: Not applicable (U.S. real property excluded from Ontario estate)
• Annual compliance: Minimal — U.S. rental income reported on both U.S. (Form 1040-NR) and Canadian returns
• Capital gains on sale: FIRPTA withholding (15% of gross sale price), refundable on filing. Canadian capital gains reported on T1 with foreign tax credit for U.S. tax paid
• Principal residence exemption: Available if the property qualifies (used primarily as a residence, not rented full-time)
• Annual cost: ~$500–$1,500 (U.S. tax filing if renting)

Option 2: Canadian Holding Company

• U.S. estate tax: Eliminated — shares of a Canadian corporation are not U.S.-situs
• U.S. probate: Avoided — the corporation survives the shareholder's death
• Ontario probate: Shares included in Ontario estate ($5,250 in probate fees on $400K)
• Annual compliance: Heavy — corporate tax returns in Canada (T2) and U.S. (Form 1120-F), state filings, registered agent fees, FIRPTA withholding on sale
• Capital gains on sale: Corporate tax on gain, then personal tax on dividends to extract proceeds (imperfect integration)
• Principal residence exemption: Lost — corporation owns the property, not the individual
• Annual cost: ~$5,000–$10,000 (accounting, legal, state fees)

Option 3: Joint Tenancy with Right of Survivorship (JTWROS)

• U.S. estate tax: Deferred — full value included in first spouse's estate unless surviving spouse can prove contribution. On second death, full value taxed
• U.S. probate: Avoided on first death — property passes automatically to surviving tenant. Required on second death
• Ontario probate: Not applicable (U.S. property)
• Annual compliance: Same as personal title
• Capital gains on sale: Same as personal title
• Principal residence exemption: Available
• Canadian tax risk: Adding a non-spouse joint tenant triggers a deemed disposition of 50% — an immediate capital gains tax event in Canada
• Annual cost: ~$500–$1,500

Cross-Border Executor Steps: What Must Happen After a Canadian Snowbird Dies

When a Canadian snowbird with U.S. property dies, the executor faces filings in both countries. Here is the sequence:

Canadian Filings

1. T1 terminal return: Report worldwide income from January 1 to date of death, including deemed disposition of the Florida condo (capital gain = FMV at death minus ACB). Due April 30 of the following year or 6 months after death, whichever is later.
2. Ontario probate: Apply for Certificate of Appointment for Ontario assets. U.S. real property is excluded from the Ontario estate value.
3. T1135: If total cost of specified foreign property exceeded $100,000 at any time during the year, file with the terminal return.
4. Clearance certificate: Request from the CRA before distributing estate assets — protects the executor from personal liability for unpaid taxes.

U.S. Filings

1. IRS Form 706-NA: U.S. non-resident estate tax return. Must be filed within 9 months of death. Claim the treaty prorated credit. Disclose worldwide estate value to calculate the credit fraction. Even if no tax is owed, filing is required to claim the treaty benefit.
2. Florida ancillary probate: File with the county circuit court where the property is located. Appoint a personal representative (must be a Florida resident or family member). Timeline: 3–12 months depending on complexity.
3. FIRPTA compliance: If the estate sells the U.S. property, the buyer must withhold 15% of the gross sale price under FIRPTA. The estate files a U.S. non-resident tax return to recover the excess withholding.
4. Final Form 1040-NR: If the property generated rental income in the year of death, a final U.S. non-resident income tax return is required.

The TCJA Sunset Risk: What Happens if the $13.61 Million Exemption Drops

The current $13.61 million U.S. estate tax exemption was set by the Tax Cuts and Jobs Act of 2017 and is scheduled to sunset after 2025. If Congress does not extend it, the exemption drops to approximately $7 million (inflation-adjusted from the pre-TCJA $5.49 million base).

For Canadian snowbirds, this has a direct impact on the treaty prorated credit:

• Current exemption ($13.61M): Robert's prorated credit of $1,526,301 far exceeds his tentative tax. Zero U.S. estate tax.
• Sunset exemption (~$7M): The unified credit drops to approximately $2,773,800. Robert's prorated credit becomes $2,773,800 × ($545,000 ÷ $1,925,000) = $785,305. Still enough to eliminate the tax on $545,000 of U.S. assets — but the margin of safety is much smaller.
• High-net-worth snowbirds at risk: A Canadian with $3 million in U.S. assets and a $5 million worldwide estate would see the prorated credit drop from $3,233,880 to $1,664,280 — potentially creating a six-figure U.S. estate tax bill that did not exist under the higher exemption.

Five Steps Every Ontario Snowbird Should Take Before Next Winter

1. Inventory your U.S.-situs assets. List every asset the IRS would count: real property, U.S. stocks held directly (not in an RRSP/RRIF), tangible property in the U.S., U.S. mutual funds and ETFs. Total the fair market values. If the total exceeds $60,000, you have U.S. estate tax exposure.
2. Calculate your worldwide estate and treaty prorated credit. Add all worldwide assets (Canadian home, investments, pensions, U.S. property) to determine whether the treaty credit eliminates the tax. If your worldwide estate exceeds $10 million, get a formal cross-border estate tax projection.
3. Move U.S. stocks from non-registered accounts into RRSPs or Canadian-listed ETFs. If you hold Apple, Microsoft, or other U.S. stocks directly in a non-registered account, you are creating unnecessary U.S.-situs exposure. Selling and repurchasing through a Canadian-listed ETF (or holding within an RRSP) removes the situs problem entirely.
4. Brief your executor on the dual-filing requirement. Your executor must know that a U.S. Form 706-NA is required within 9 months of death to claim the treaty credit. If they do not file, the IRS assesses the full non-treaty tax. Put the instruction in your estate planning documents — not just in a conversation.
5. Review your ownership structure every 3 years. The TCJA sunset, changes in property values, and shifts in your worldwide estate can all change the calculus on whether personal title, a holding company, or joint tenancy is optimal. What worked when you bought the condo may not work when your estate has grown.