QDOT and Other Transfers to a Non-Citizen Spouse under the Code and the Tax Treaties

The issue

The citizenship restriction on the marital deduction dates from 1988, and it turns on one fact: whether the receiving spouse is a US citizen. A green card held for decades changes nothing. The Code and the conventions offer substitutes, each tied to an act or a deadline that the first death sets: a qualified domestic trust must be in place, or funded by the survivor, when the return goes in; the treaty election is made on that return and rules out the alternatives; and contribution records for joint property can only be built while both spouses are alive.

Who the guide is for

The guide is addressed to married couples in which one spouse is not a US citizen, and to their estate planners, tax advisors and executors, with particular attention to couples connected with Germany, France, Canada and the United Kingdom.

Citizenship, domicile and the treaty domicile

Citizenship decides whether the unlimited deduction applies; domicile decides how far the gift and estate taxes reach. A non-citizen with a US domicile pays gift and estate tax on worldwide transfers but has the full exemption; one domiciled abroad is reached only through US-situs property, with a USD 13,000 credit, and may give intangible property free of gift tax. The conventions add deemed-domicile rules for a national of one country whose stay in the other has been short, which can keep a recently arrived German or French spouse domiciled at home.

Lifetime gifts and jointly held property

A qualified terminable interest property trust earns only the ordinary USD 19,000 exclusion for its income interest, gift-splitting is lost where a spouse is domiciled abroad, and a sale or exchange with a nonresident alien spouse recognizes gain (I.R.C. § 1041(d)). Joint real property, joint securities and joint accounts follow different gift tax rules, and at the first death jointly held property falls entirely into the gross estate, less whatever the estate can prove the survivor paid from personal funds (I.R.C. § 2040(a)). The guide also explains why the German Zugewinngemeinschaft is not community property.

The qualified domestic trust and retirement accounts

The guide sets out the trustee, withholding, governing-law and security requirements of a qualified domestic trust under the regulations as amended effective July 10, 2026, the election, and the survivor’s assignment of property received outright. The trust defers the tax: principal distributions and the value left at the survivor’s death are taxed at the first spouse’s rates, while income and hardship distributions are not. Retirement accounts enter the trust regime by assignment or under one of two annuity agreements, and life insurance is planned through ownership and situs.

Treaty relief, the period after the first death and state taxes

For couples connected with Germany, France or Canada the guide compares the treaty deduction, which removes up to the cap from tax for good but taxes any excess at once, with the trust, which postpones tax on the whole (Article 10(6) of the estate and gift tax treaty with Germany; Article 11(3) of the estate and gift tax treaty with France; Article XXIX B(3) of the income tax treaty with Canada). Under the British, Dutch, Austrian and Danish conventions the United States may tax a decedent domiciled in the treaty country, other than a US citizen, chiefly on US real property and business property.

The guide then covers portability, the credit for tax on prior transfers, naturalization, expatriation, and the twelve states and the District of Columbia that levy estate tax, among them New York, which for deaths since July 1, 2025 requires a qualified domestic trust for its marital deduction where no federal return is required.

The questions the guide answers

• Which gifts to a non-citizen spouse fall within the annual exclusion, and when does a transfer between spouses recognize gain?
• What must a qualified domestic trust contain, what security does it need, and when are its distributions taxed?
• How can a survivor who inherited outright still obtain the deduction, and what applies to retirement accounts and life insurance?
• When is the German, French or Canadian treaty election preferable to the trust, and what do the other conventions provide?
• What do portability, naturalization, expatriation and the state estate taxes change after the first death?

The firm advises couples with a non-citizen spouse on the classification of each spouse, the annual gifting program, contribution records and the choice of marital property regime, and drafts estate documents that keep a qualified domestic trust and a treaty election available. At the first death it models the treaty route against the trust, prepares the elections and assignments within the deadlines, and works with the couple’s advisors in Germany, France, Canada or elsewhere on the position in the other country.