A Qualified Domestic Trust (QDOT) is a US estate planning tool that allows a US citizen spouse to leave assets to a non-US citizen surviving spouse while deferring US estate taxes.
It ensures that wealth can pass legally and efficiently across borders, even when the surviving spouse is not a US citizen.
This article covers:
Key Takeaways:
My contact details are hello@adamfayed.com and WhatsApp +44-7393-450-837 if you have any questions. We also offer bespoke structuring solutions tailored to your situation.
The information in this article is for general guidance only, does not constitute financial, legal, or tax advice, and may have changed since the time of writing.
A Qualified Domestic Trust (QDOT) is a specific type of trust established to hold assets for a surviving spouse who is not a US citizen.
The QDOT allows the surviving spouse to receive income and principal from the trust while deferring US estate taxes that would normally apply at the death of the first spouse.
Unlike standard trusts, a QDOT must meet strict requirements set by the Internal Revenue Service (IRS) to qualify for estate tax deferral.
These requirements are codified under US federal estate tax law, specifically Section 2056(d) of the Internal Revenue Code (IRC), which governs marital deduction rules for non-US citizen spouses.
QDOTs are most commonly used when a US citizen dies leaving a significant estate to a non-US citizen spouse.
Without a QDOT, the estate would be subject to immediate US estate taxes, which can be substantial for large estates.
By placing assets in a QDOT, the surviving spouse can receive income over time, and estate taxes are paid only when distributions are made, rather than immediately at death.
Common assets held in a QDOT include:
A non-US citizen generally cannot create a Qualified Domestic Trust for their own benefit before the US citizen spouse’s death.
Typically, a QDOT is established by a US citizen spouse or their estate to transfer assets to a non-US citizen surviving spouse.
This is the most common scenario and ensures eligibility for the marital deduction and estate tax deferral.
However, under IRS rules, a non-US citizen surviving spouse can also create a QDOT after the death of the US citizen spouse.
This is done by irrevocably assigning inherited assets into the QDOT before the estate tax return is due.
This assignment method allows the surviving spouse to establish the trust themselves, as long as all IRS requirements are met.
To qualify as a QDOT, the trust must meet these requirements:
Both the standard creation method and the assignment method are recognized by law.
A Qualified Domestic Trust allows the deferral of US estate taxes until the non-US citizen surviving spouse receives distributions from the trust.
This structure ensures compliance with US tax laws while giving the surviving spouse access to income and principal over time.
Key tax points:
A Qualified Domestic Trust is set up by drafting a trust that meets IRS requirements and appointing a qualified US trustee before transferring estate assets into the trust.
Setting up a QDOT involves several steps:
1. Hire a qualified attorney: Engage a US estate planning attorney experienced in QDOT rules to ensure proper structuring and compliance.
2. Draft the trust document: Prepare a legally valid trust agreement that includes all provisions required by the IRS for estate tax deferral.
3. Appoint a US trustee: Designate at least one US citizen trustee or a US-based bank to oversee the trust and handle tax obligations.
4. Fund the trust: Transfer eligible assets from the US citizen spouse’s estate into the QDOT, either during estate administration or via assignment.
5. File required tax forms: Submit the necessary filings, including the estate tax return, to formally elect QDOT treatment and secure tax deferral.
Professional guidance is essential to avoid errors that could disqualify the trust and trigger immediate estate taxes.
While there is no legally fixed minimum, a Qualified Domestic Trust is typically established for estates valued above the federal estate tax exemption of $15 million in 2026, since smaller estates generally do not owe federal estate tax.
A QDOT is practical only when the estate’s value exceeds this threshold, because estates below $15 million usually do not benefit from the complex setup, trustee costs, and IRS compliance requirements.
Even for large estates, the trust should be funded with enough assets to cover potential estate taxes while providing meaningful support to the surviving non-US citizen spouse.
Costs of setting up a QDOT:
Considering these costs, a QDOT is generally most beneficial for high-value estates, where the tax deferral advantages significantly outweigh setup and ongoing administration expenses.
A Qualified Domestic Trust should be used when a US citizen leaves a high-value estate to a non-US citizen spouse and wants to defer estate taxes while ensuring controlled access to assets.
It is most appropriate in situations where:
By focusing on these specific conditions, a QDOT becomes a targeted and effective tool for international estate planning.
A Qualified Domestic Trust can be disqualified, and trigger immediate US estate taxes, if trustees, provisions, funding, or IRS compliance are not handled correctly.
Key pitfalls to watch for:
By proactively addressing these pitfalls, families can ensure the QDOT functions as intended, protecting wealth and deferring estate taxes for non-US citizen spouses.
A QDOT transforms estate planning for families navigating cross-border and citizenship complexities.
Its value extends beyond tax deferral: it allows families to align wealth transfer with long-term goals, manage risk, and provide structured support for surviving spouses.
For expats, timing and foresight are crucial. Setting up a QDOT early in the planning process ensures smoother administration, clearer distribution strategies, and fewer surprises with US tax authorities.
Thoughtful trustee selection, proper funding, and meticulous compliance turn the QDOT from a regulatory requirement into a tool for intentional legacy planning.
Ultimately, a QDOT is most effective when it is treated as a strategic bridge between legal compliance, financial planning, and family continuity, allowing international families to protect wealth while preserving flexibility for future generations.
The four main types of trusts are revocable, irrevocable, testamentary, and living trusts.
Revocable and living trusts are set up during the grantor’s lifetime, while irrevocable and testamentary trusts provide tax or probate advantages and cannot be easily changed.
Irrevocable trusts generally offer the best tax advantages, including estate tax reduction and asset protection, because assets are removed from the grantor’s estate.
A living trust is commonly used to avoid probate, allowing assets to pass directly to beneficiaries without court involvement.
Yes, foreigners can be beneficiaries, but certain restrictions and tax obligations apply, particularly for non-US citizens inheriting US assets.
QDOTs are specifically designed to address these situations.