A Costly Estate Planning Surprise for Americans Married to Non-Citizens
Most married couples benefit from one of the most valuable provisions in the federal estate tax system: the unlimited marital deduction.
This rule generally allows assets to pass from one spouse to the other without federal estate tax when the first spouse dies.
However, there is an important exception that many Americans, especially those living overseas, have never heard about.
The Unlimited Marital Deduction Does Not Automatically Apply
If the surviving spouse is not a U.S. citizen, the unlimited marital deduction is generally not available unless specific planning requirements are met.
This often surprises taxpayers because the rule applies even if the non-citizen spouse:
• Has lived in the United States for many years
• Holds a green card
• Has been married to a U.S. citizen for decades
For estate tax purposes, citizenship matters.
Why Does the Rule Exist?
Congress created this exception because assets passing to a non-citizen spouse could potentially leave the U.S. tax system before estate tax is ultimately collected.
As a result, special rules were established for estates involving non-citizen spouses.
A Potential Solution: The Qualified Domestic Trust (QDOT)
One common planning tool is a Qualified Domestic Trust (QDOT).
A properly structured QDOT can allow a deceased spouse's assets to qualify for the marital deduction while preserving the government's ability to collect estate tax later.
In general, assets pass into the trust for the benefit of the surviving spouse. The spouse may receive income from the trust, while estate tax is deferred until later events occur, such as the surviving spouse's death or certain distributions of trust principal.
Because QDOTs must satisfy specific legal and tax requirements, they should be established with the assistance of a qualified estate planning attorney.

Why This Matters to Expats
Many Americans living abroad are married to foreign nationals. While most expats are familiar with tax issues such as FBAR reporting, FATCA compliance, and the Foreign Earned Income Exclusion, far fewer are aware of the estate tax rules that apply to non-citizen spouses.
As a result, families may assume that the same estate tax protections available to other married couples automatically apply to them.
They do not.
For families with significant assets, failing to address this issue could lead to unintended estate tax consequences.
Does This Affect Everyone?
Not necessarily.
Current federal estate tax exemptions remain historically high, meaning many families will never owe federal estate tax. However, this issue becomes increasingly important for taxpayers with:
• Significant investment portfolios
• Real estate holdings
• Closely held businesses
• Large retirement accounts
• Anticipated inheritances
• Estates that may exceed future exemption amounts
The Bottom Line
If you are a U.S. citizen married to a non-U.S. citizen, do not assume the unlimited marital deduction automatically applies to your estate.
The rules are different, and proper planning may be necessary to preserve valuable estate tax benefits for your family.
A review today can help identify potential issues long before they become costly problems.
If you would like to discuss how these rules may affect your overall tax and financial planning, please contact Lance W. Gurel, CPA, for a free consultation.
This article is intended for informational purposes only and should not be considered legal or tax advice. Estate planning involving non-citizen spouses can be complex and often requires coordination with a qualified estate planning attorney.