A client once came to me after building a successful business in Manhattan. He had arrived in the U.S. decades ago, built his company from the ground up, and married. His wife, however, was not a U.S. citizen. He assumed, as many do, that upon his death, his entire estate would pass to her tax-free, just as it would to a citizen spouse. He was mistaken—and his family was facing a potential multi-million dollar federal estate tax bill.
This is a scenario we see too often. The rules that govern the transfer of wealth between spouses change dramatically when one spouse is not a U.S. citizen. The foundation of most marital estate plans—the unlimited marital deduction—simply does not apply.
The Unlimited Marital Deduction and Its Limits
For married couples where both spouses are U.S. citizens, the federal government allows for an unlimited marital deduction. This means you can transfer an unlimited amount of assets to your surviving citizen spouse, either during your lifetime or at your death, without incurring any federal gift or estate tax. The tax is deferred until the second spouse’s death.
This principle is a cornerstone of traditional estate planning. But when the surviving spouse is not a U.S. citizen, this deduction is disallowed. The government’s logic is straightforward—it is concerned that a non-citizen surviving spouse could move back to their country of origin with the assets, permanently removing them from the U.S. tax system.
Without the marital deduction, any assets left to a non-citizen spouse above the federal estate tax exemption—$13.61 million per individual in 2024—are subject to estate tax. For families who have built significant wealth, this can trigger a sudden and massive tax liability that often forces the sale of family assets, real estate, or a business.
The Qualified Domestic Trust (QDOT)
The law provides a specific instrument to address this situation: the Qualified Domestic Trust, or QDOT. By titling assets into a properly structured QDOT, you can defer the estate tax, effectively mimicking the benefit of the marital deduction.
A QDOT holds assets for the benefit of the surviving non-citizen spouse. Here’s how it functions:
- The Trust Holds the Assets: Instead of passing directly to the surviving spouse, assets are transferred to the QDOT.
- The Spouse is the Beneficiary: The surviving spouse receives all income generated by the trust—such as dividends or interest—for the rest of their life.
- Principal Distributions are Taxable: If the trustee distributes principal from the trust to the spouse, that distribution is generally subject to estate tax. An exception exists for distributions made on account of “hardship.”
- Tax is Paid on the Spouse’s Death: The estate tax is ultimately paid when the surviving non-citizen spouse passes away and the remaining assets in the trust are distributed to the next beneficiaries.
To be effective, the trust must comply with specific requirements under Internal Revenue Code § 2056A. For example, at least one trustee must be a U.S. citizen or a U.S. bank. For larger estates, the U.S. trustee may be required to post a bond to ensure the tax is eventually paid. This is not a simple document—it is a deliberate and technical contingency plan.
Beyond Taxes: Guardianship and International Assets
For international families, planning extends beyond tax. If you have minor children, nominating a guardian is critical. You must name a custodian who is legally able to care for your children in the U.S. should something happen to you both. Without a formal nomination in a will, the decision falls to a judge in Surrogate’s Court under SCPA Article 17, who may be unfamiliar with your wishes or your family’s circumstances.
Furthermore, many of our clients hold assets in other countries—a family home, bank accounts, or business interests. A New York will has no automatic authority over real estate in Italy or a bank account in Brazil. Proper international estate planning requires coordinating with counsel in each jurisdiction where you hold assets. It’s an exercise in prudent stewardship, ensuring your legacy is managed as a whole, not as a collection of disconnected pieces.
If your spouse is not a U.S. citizen or your assets cross international borders, the first step is to create a clear inventory of your global assets and review how each is titled. This inventory is the foundation for a plan that protects your spouse and preserves your legacy for the next generation.
