A US citizen died in Canada: final returns in both countries

What must the executor file in each country, and in what order?

Each country wants its own returns, and a Canadian final return does not satisfy the IRS. The executor generally files the Canadian final T1, a US final Form 1040 if income required one, Form 706 if worldwide property plus taxable lifetime gifts pass the filing threshold, and the estate's own returns for income after death (CRA; Publication 559).

A death in the first half of the year usually puts the Form 706 date ahead of the income-tax dates; a later death puts it behind them.

Who counts as the executor (liquidator in Quebec), and what proof does each agency ask for?

The CRA recognizes the executor named in the will or a legally appointed administrator; in Quebec, the liquidator (CRA). For estate tax, the Form 706 instructions treat anyone in actual or constructive possession of the deceased's property as an executor when none is appointed, qualified and acting in the United States (Form 706 instructions).

Both countries can make the executor pay personally. The estate's assets pay the CRA, but a representative who distributes without a clearance certificate can be personally liable for balances owing (CRA). In the US, debts due to the United States come first: where an estate cannot pay all its debts, a personal representative who knew of the tax, or failed to check with due care, is personally responsible for what was paid to others first. An executor appointed, qualified and acting in the US can ask for discharge on Form 5495 once the returns are filed (Publication 559). Unpaid estate tax is also a lien on the gross estate for 10 years from the date of death, and a spouse, transferee, trustee or beneficiary who receives property included under sections 2034–2042 is personally liable for it up to its date-of-death value (26 U.S.C. 6324(a)).

What goes on the Canadian final return, and when is it due?

A Canadian resident's final T1 reports income through death and generally a deemed sale of capital property at fair market value immediately before death, even without an actual sale. A rollover to a surviving spouse or common-law partner needs one who was resident in Canada at death (or a qualifying trust) (CRA: capital gains). An unmatured RRSP generally brings its date-of-death value into income unless a survivor rule applies (CRA: RRSP).

The ordinary dates are in the table above, and the balance owing falls due on the same day. A prior-year return still unfiled when death falls on or before its due date, with its balance, is due six months after the date of death (CRA). The business-income extension, the principal-residence exemption, optional returns, Quebec differences and clearance certificates are in taxes when someone dies in Canada.

What does the US final Form 1040 cover, and does Canadian tax get a credit?

The final Form 1040 follows ordinary US rules, and a US citizen's income is taxed worldwide. For a cash-method taxpayer it generally includes amounts actually or constructively received before death; unpaid income may be taxable to the estate or beneficiary when received (IRS: citizens abroad; Publication 559).

A joint return with the surviving spouse is possible unless the survivor remarried before year-end; it counts the decedent's income to death and the survivor's for the whole year. A survivor who is neither a US citizen nor a resident alien can join only by choosing US resident treatment, which brings worldwide income into US tax and bars treaty claims of nonresidence (Publication 559; Publication 519).

Eligible Canadian income tax paid or accrued may support a foreign tax credit, usually on Form 1116, subject to source, income category, timing and the US credit limit; it does not guarantee an equal credit (Publication 514). How it works for a living US citizen in Canada is in Americans living in Canada.

The final return is generally due April 15 of the year after the year of death, whatever the month of death. A return for the year before death, if not yet filed, is a regular return the representative files by its ordinary date. Publication 559 says a personal representative may obtain an extension for a decedent. A US citizen abroad gets an automatic extension to June 15 (IRS), but neither source says whether it carries over to a final return, so confirm the date before relying on it.

Does the US tax what Canada calls the deemed disposition at death?

The US generally does not impose a matching capital-gains tax merely because Canada deems property sold at death, so a deemed gain creates no US gain and no automatic Form 1116 credit. Inherited capital property's US basis (the cost used to calculate a later gain) is generally its date-of-death fair market value, so a house or shares the estate later sells are measured from that value (Publication 559).

The rule has exceptions, including valuation elections and special-use property. One that can matter to a US citizen with foreign investments is stock in a passive foreign investment company, where the date-of-death basis can be cut back to the decedent's adjusted basis; whether a holding is one is a separate determination (26 U.S.C. 1291(e)). An RRSP or RRIF is different: Canada adds its value to the final T1, but the basis rule above does not govern it. How the US taxes the payouts is in inheriting a Canadian RRSP, RRIF or TFSA as a US person.

Treaty Article XIII(7) lets an individual elect a matching deemed sale, but Treasury's technical explanation says it generally does not apply at death; Article XXIX B coordinates Canada's death tax with US estate tax instead.

Is there US estate tax, and must Form 706 be filed if no tax is owed?

Estate tax generally applies only above the exclusion, but Form 706 must be filed whenever the filing-test total passes it, even if deductions or credits leave no tax. The test counts worldwide property wherever the citizen lived (including joint property, retirement interests and life insurance), plus taxable lifetime gifts and any specific gift-tax exemption claimed on earlier gifts (Form 706 instructions).

The exclusion shown applies to deaths in this page's tax year; use the amount for the year of death (IRS estate tax). Form 706 is due nine months after death, and Form 4768 gives an automatic six months filing extension, not more time to pay. A portability-only return generally has until the fifth anniversary of death under Rev. Proc. 2022-32 (Form 706 instructions). A required Form 706 also brings Form 8971 and Schedules A for certain beneficiaries, due 30 days after the earlier of the Form 706 due date (with extensions) or the date it is filed (Form 8971 instructions; Publication 559).

Does the marital deduction apply if the surviving spouse is not a US citizen?

An outright bequest to a non-US-citizen spouse generally does not receive the usual US estate-tax marital deduction. A qualified domestic trust, or QDOT, may permit the deduction if the trust, transfer and election requirements are met (Form 706 instructions, Schedule M).

A QDOT needs a qualifying US trustee and tax withholding on principal distributions, among other terms. Property must pass or be irrevocably assigned to it before the return is filed. The executor elects by listing the trust on Schedule M, the election is irrevocable, and a return filed no later than one year after the Form 706 due date, including extensions can still carry it. Later principal distributions and property remaining at the spouse's death can trigger tax (Form 706-QDT instructions). A surviving spouse who becomes a US citizen before the Form 706 is filed, and was a US resident at all times from the death until then, does not need a QDOT (26 U.S.C. 2056(d)(4)).

The treaty offers a limited marital credit for qualifying transfers, with residence conditions. The executor must elect it, and waive the US marital deduction irrevocably, on a return filed by the last date a QDOT election could be made. It is a separate route from a QDOT, and Canada's spousal rollover does not establish US eligibility (Article XXIX B(3)–(4); Form 706 instructions, line 16).

Does the treaty credit Canadian tax at death against US estate tax?

Only against US estate tax that is actually payable. The US exclusion does not remove Canada's tax on property treated as sold at death, so with no US estate tax there is nothing to credit. Where US estate tax is payable, treaty Article XXIX B allows a limited credit for the Canadian tax, and relief runs the other way for US tax on US-situated property.

The paragraph 7 credit works only against US estate tax: it does not lower the Canadian tax, and the same Canadian tax cannot also get another US credit or deduction (Article XXIX B(6)–(7)). For a US citizen or resident who held an RRSP or similar Canadian plan at death, the treaty treats the Canadian tax on its deemed distribution as tax on property in Canada, so it can count toward that credit (Treasury technical explanation, General Note paragraph 7).

Form 706 claims the credit on Schedule P, carried to Part II, line 13, with Form 706-CE. It is allowed only for foreign tax actually paid and claimed within the instructions' time limit, generally four years after the return is filed; Canadian tax is often paid later than the Form 706 due date, so plan the two together (Form 706 instructions, Schedule P).

Does the estate file Form 1041 and a Canadian T3?

Two separate estate returns can apply: a US Form 1041 (or Form 1040-NR) and a Canadian T3. A "foreign estate" is a US tax label defined by income, not a place: income from outside the US that is not tied to a US business and not includible in US gross income; any other estate is domestic. The Form 1041 instructions do not say how that applies to a US citizen's estate administered in Canada, so confirm the estate's status before choosing a form (Form 1041 instructions).

Form 1041 is generally due the 15th day of the fourth month after the end of the tax year, so April for a calendar year. A T3 and its payment are generally due 90 days after the trust's tax year-end (CRA).

How does the executor release US assets, and what is a transfer certificate?

For a US citizen who lived outside the US, an IRS transfer certificate may be needed to release property. It is not required for property administered by an executor or administrator appointed, qualified and acting within the US (IRS transfer-certificate guidance).

The IRS estimates six to nine months for a complete Part B request and warns that an unnecessary Form 706 delays release, so first settle whether Form 706 was required.

What if the person never filed US returns or FBARs?

Death does not replace required earlier returns with one final return, and the right correction route depends on which filings were required and missed. IRS transcripts, the Canadian returns and account statements show what was filed and held (IRS records guidance).

FBAR reporting is separate from income tax: foreign accounts with an aggregate value above US$10,000 at any point in the calendar year trigger the general rule, so check the death year as well as earlier years (FinCEN). The IRS lists an estate among the US persons who must file (IRS).

The IRS says its streamlined procedures are open to estates of individual taxpayers, but only for non-willful failures and not once an examination or criminal investigation has begun (IRS; foreign offshore version). The residence test, package contents and willful conduct are in catching up on missed US returns.

What changes for dual citizens or green card holders?

Canadian citizenship does not remove a US citizen's worldwide US estate-tax treatment; the IRS transfer-certificate rules expressly cover citizens with dual citizenship (IRS). For a noncitizen green card holder, estate-tax residence turns on domicile, which the green card alone does not decide (IRS estate-tax questions).

Income-tax status is separate: a green card holder is a US resident under the green card test unless an override such as a treaty tie-breaker applies. That decides whether the final return is Form 1040 or, when treaty benefits are claimed, Form 1040-NR with Form 8833 attached (IRS residency rules; Publication 519). How a green card ends is in catching up on missed US returns.

Example

Assume a US citizen living in Ontario dies owning non-registered shares that pass to an adult child. All illustrative amounts are Canadian dollars; there is no spousal rollover. The shares cost C$200,000 and are worth C$500,000 at death.

Different for you?

Missing US filings, a spouse who is not a US citizen and treaty-credit claims involve linked decisions, including Form 706 elections and distributions made before clearance. Gather the will or appointment papers, death certificate, citizenship records, T1 slips, RRSP statements, asset values and costs, past US returns, gift returns and FBAR records for cross-border tax preparation and review.

• Canadian return details, Quebec duties or clearance before distribution: use taxes when someone dies.
• A non-US citizen with US assets: use settling an estate across the border.
• Unfiled US returns: use catching up on missed US returns.
• A US person inheriting an RRSP, RRIF or TFSA: use inheriting Canadian registered accounts.
• A Canadian resident inheriting an IRA or 401(k): use inheriting a US retirement account.
• Planning ownership of US property before death: use how a Canadian should own US property.
• The deceased owned a Canadian private corporation: use American owners of Canadian corporations.