US estate tax for non-resident aliens — who pays, and where?

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Answer

Situs rules decide inclusion, deductions are restricted, and the custodian will not release US assets until a transfer certificate issues. The obligation is decided by facts rather than by tax owing, which is why a nil position does not remove it.

The rule on who files

Situs rules decide inclusion, deductions are restricted, and the custodian will not release US assets until a transfer certificate issues. Treaty relief, where a treaty applies, can substitute a pro-rated credit for the domestic exemption.

The team reviewing a file together at a desk

When it does not bind you

For a non-resident, US estate tax applies to US-situs property with a much smaller exemption than a US person receives, and the return is due from the executor on a short timetable.

US estate tax for non-resident aliens — who pays, and where?
ItemAmount
Worldwide estateC$2,128,000
Assets situated in the USC$340,480
Proportion of the estate exposed16%
Relief mechanismTreaty credit, pro-rated by the same proportion

The exposure follows the 16% rather than the whole estate, and the treaty relief available to a Canadian estate is pro-rated on the same ratio. That ratio is the number to manage — through how the US assets are held, not through where the owner lives.

An illustration, not a client file. The sums are chosen for legibility and the thresholds are stated for the example alone — nothing reaches a filing until it has been confirmed at source for your own year.

How to get this moving

The full treatment — who it binds, the deadline, the penalty and the fixed fee — is on US estate tax for non-resident aliens. If you already have an adviser, we will tell you what they should be asking rather than replacing them.

Reviewed for the 2025 and 2026 filing seasons by Udit Gupta, Cross-Border Tax Expert, Legal Quotient Consultants. General guidance only. Your own facts decide the answer, so bring them to a call before relying on this.

What is non resident alien — what this page covers

Readers arrive here searching for what is non resident alien, and US estate tax for non-resident aliens is what the page is about. Below: who it catches, what has to be filed, and what it costs — quoted in writing, before anything is done.

People also search for: are you a non resident alien · what's non resident alien · are you a non-resident alien · non-resident alien vs resident alien · what's a non resident alien.

What these engagements turn on

Case study 1

Frozen US brokerage account released after a transfer certificate

The family could not touch a US investment account months after the death, and the custodian would say only that it needed a certificate. We inventoried the estate by situs, valued the US holdings as at the date of death, prepared and filed the US return, then made the certificate request with the assessment behind it. The engagement produced a filed return, a documented situs analysis for every asset in the account, and the certificate the custodian required before the transfer. The family also had, for the first time, a written explanation of why the account had been frozen at all.

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Case study 2

Sunbelt condominium owned personally by a Canadian who filed nothing

A holiday property had been bought many years earlier and held in the owner's own name. Nothing had ever been filed in the United States, and the executor had been told, wrongly, that there was no exposure because the owner was not American. We established the situs position, obtained a valuation of the property as at the date of death, computed the exposure against the exemption a non-resident is allowed, and set out the treaty relief claim alongside it. The work produced a filed US return and a written basis for the proportion used in the relief computation.

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Case study 3

Situs analysis that kept most of an estate outside the US net

The estate looked heavily exposed because most of the portfolio carried American names. Working through the holdings one at a time, we distinguished the items genuinely situated in the United States from those that were not, and recorded the reasoning against each line. The exposure that remained was far narrower than the first pass had suggested. The engagement produced a classified inventory, a return covering the assets that did fall inside it, and a memorandum the executor could hand to the custodian and to the beneficiaries who had been told the whole portfolio was caught.

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Case study 4

Executor who had already distributed before the US exposure surfaced

Part of the estate had gone out to beneficiaries before anyone identified the US assets. We stopped further distributions, reconstructed the estate as it stood at the date of death, established what the US position should have been, and prepared the return on that basis. Where funds had to be recovered to meet the liability, we set the position out in writing so the executor could approach the beneficiaries with a document rather than an apology. The engagement produced a filed return, a settled exposure, and a record of the sequence that the executor needed for personal protection.

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Case study 5

Rebuilding a deduction schedule after the first computation overstated it

An earlier adviser had taken the deceased's liabilities and funeral costs in full, as though the estate were an American one. We reworked the computation on the restricted basis that applies to a non-resident estate, allocated each item against the US property where an allocation was required, and evidenced every figure to a source document. The result was a smaller deduction than the family had been promised, and a defensible one. The engagement produced a corrected return, a schedule tying each liability to its evidence, and a note on the items that could not be claimed at all.

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Case study 6

Reworking how US holdings were held while it could still be changed

A client in good health wanted the position understood while it was still open to change. We measured the proportion of the worldwide estate that sat in US-situs assets, showed how that proportion drives both the tax and the pro-rated treaty credit, and set out the ways the same investment exposure could be carried without the same situs footprint. Nothing was implemented on our analysis alone; it went to the client's lawyer and investment adviser. The engagement produced a written memorandum, a revised asset schedule, and a shorter list of holdings that would freeze on death.

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Case study 7

A Non-Resident Estate Holding US Assets

US situs assets sit inside the US estate tax net regardless of where the owner lived, and the exemption available to a non-resident is not the resident one. The file establishes situs asset by asset before any relief is claimed.

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Case study 8

One Salary, Two Countries Claiming It

A US citizen resident in Canada, taxed in full on both sides because each return was prepared without the other in view. Deciding which country has the first right to the income, then claiming relief on the second return in the right order, is what stops the same dollar being taxed twice.

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The follow-up questions on US estate tax for non-resident aliens

Do I owe US estate tax if I never lived in the United States?

Residence is not the test. US estate tax reaches property that is situated in the United States, and it does so in the hands of an owner who has never set foot there. The question asked at death is therefore not where you lived but where each asset sits. A non-resident owner is also given a far smaller exemption than a US person receives, so an exposure can arise on a holding that feels modest beside the rest of the estate. Where a treaty applies it can substitute a pro-rated credit for that domestic exemption, but the credit has to be claimed. The starting point in every file is an inventory of the estate split by situs.

Which of my assets count as US-situs property when I die?

It is settled asset by asset, not account by account. Real property in a US state is the clearest case. Beyond that, the character of the asset decides the answer, and the address of the institution holding it is a different question from where the asset is situated, which is why two holdings inside the same statement can fall on opposite sides of the line. We build the inventory first, classify each item, and record the reasoning against it, because the classification drives both the return and the proportion of the estate that treaty relief is pro-rated on. An estate that cannot show its situs working cannot defend either figure.

Why will my father's US broker not release his shares to us?

Because a custodian holding US assets for a deceased non-resident will generally not release them until a transfer certificate has issued, confirming that the estate's US position is settled or that no tax stands against the property. That is a separate step from probate at home, and it comes after the US filing rather than before it. Executors are often caught by the order: the asset the family most wants is frozen by a document that cannot be requested until the valuations and the return are done. The practical answer is to start the US side early and treat the certificate as the last item on the timetable, not the first.

Is there an exemption for non-residents like the one Americans get?

Not on the same footing. A non-resident owner of US property is allowed a much smaller exemption than a US person, which is why estates that would face nothing in American hands face something here. Where a treaty applies, the relief on offer is different in shape: instead of the domestic exemption, the estate can claim a credit pro-rated by the proportion its US-situs assets bear to the worldwide estate. That means the worldwide estate has to be valued in order to claim relief on the US part, and it means the proportion itself is the thing worth managing during a lifetime.

Can we deduct the deceased's debts against the US estate tax?

Only within limits. The deductions available to a non-resident estate are restricted, so a liability or expense that a US estate would take in full is not automatically allowed here, and several are permitted only to the extent they bear on the US property. The practical effect is that the tax is computed on a base closer to gross value than executors expect. We schedule every claimed liability with its supporting evidence and the basis for any proportion taken, because a deduction claimed without that working is the item most likely to be questioned and the hardest to reconstruct afterwards.

How quickly does the US estate tax return have to be filed?

On a short timetable, and the clock runs from the date of death rather than from the day an executor is appointed or a grant of authority arrives. That is the mismatch that catches families: the domestic administration is still at its beginning while the US return is already due. Valuations are usually the bottleneck, particularly for real property and for anything not quoted on a market. We work backwards from the due date, commission the valuations first, and where the filing cannot be completed in time we deal with the extension request as a separate exercise rather than simply leaving the return late.

What is a "dual-status alien spouse", and why is my software asking?

The question comes from the filing-status screens, and it is asking whether your spouse was a non-resident or part-year resident for the year — because if they were, a joint return is not available by default. An election exists to treat a non-resident spouse as a resident for the whole year, which unlocks joint filing at the price of bringing their worldwide income into the US return and their accounts into its reporting. See a US person with a non-resident spouse.

Can exit tax exposure be reduced before expatriating?

The levers are timing and facts, not a filing position. The certification test rewards having five clean years behind you, which takes planning rather than paperwork. Where assets are held, when gains are realised, and how deferred compensation and retirement interests are structured all change the outcome, and the effect of gifts before departure has to be weighed against the separate regime for gifts and bequests from covered expatriates. This is planning that needs a runway of years. See departure planning timelines.

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