What Every Texas Couple With a Non-Citizen Spouse Needs to Know About Estate Taxes

The Question Nobody Asked

David Santos had done everything a responsible husband should do. At sixty-three, the Allen, Texas business owner had a solid estate: a paid-off home in the Twin Creeks neighborhood, a rental duplex in McKinney, a commercial building that housed his dry-cleaning operation, investment accounts he had carefully built over thirty years, and a life insurance policy that named Maria as the primary beneficiary. He and his wife Maria, who had managed the business alongside him since 1998, had engaged a general practice attorney in 2019 to draft their estate plan. The result was two matching wills, durable powers of attorney, medical directives, and a family limited partnership their CPA had recommended. It was updated in 2022 when their daughter Elena married and again in 2024 when they refinanced the rental property.

In the spring of 2026, David and Maria came to WG Law for another review. Elena was expecting their first grandchild, and David wanted to add a testamentary trust to protect Elena's inheritance. Attorney Therese Gutierrez pulled up the existing documents and began her intake. Fifteen minutes in, she asked the question their previous attorney apparently had never thought to ask: "Maria, are you a US citizen?"

Maria smiled. She had been a permanent resident since 1994 — had her green card, had lived in the United States for thirty-two years, raised her children here, built her business here. She had never naturalized. There had always been something more pressing.

"Let me show you something," Therese said.

The analysis that followed was not about grandchildren or testamentary trusts. It was about a federal estate tax exposure that David and Maria's otherwise careful plan had never addressed — one that, if David had died that morning, could have generated a tax bill between $800,000 and $1.4 million that a relatively straightforward trust structure would have prevented entirely.

That structure is called a QDOT. And the gap it closes is one of the most consistently overlooked issues in estate planning for North Texas families.

Why Citizenship Is the Estate Planning Question Nobody Asks

The unlimited marital deduction is one of the most powerful tools in federal estate tax planning. Under 26 U.S.C. § 2056(a), a US citizen can leave any amount of property to a surviving spouse without triggering federal estate tax. There is no cap. The estate tax is deferred until the surviving spouse dies, at which point it applies to whatever remains in the estate above the available exclusion. For most American couples, this deferral means the estate tax issue doesn't arrive until the second death — and by then, the estate may have been spent down, transferred to children, or planned for in other ways.

Here is what catches most families by surprise: the unlimited marital deduction does not apply when the surviving spouse is not a US citizen at the time of the first spouse's death. Under IRC § 2056(d), the marital deduction is disallowed for transfers to a non-citizen spouse — regardless of how long the non-citizen spouse has lived in the United States, regardless of whether they hold a permanent resident card, regardless of the length or depth of the marriage.

The reason is structural. The US Treasury Department cannot guarantee collection of the deferred estate tax against a surviving spouse who may move assets outside US jurisdiction before dying. The unlimited marital deduction is premised on the ability to eventually collect the tax — and for a non-citizen spouse, that ability is not assured. So Congress made the deduction unavailable unless the transferring structure specifically preserves US taxing jurisdiction over the assets during the surviving spouse's lifetime.

For David and Maria: when David dies, his share of their community estate and his separate property (the commercial building, his pre-marriage savings) pass to his estate. Everything below the federal estate tax exclusion passes free of estate tax. Everything above it — without the unlimited marital deduction — is subject to federal estate tax at rates that reach forty percent. David and Maria's estate was well above the threshold. And their estate plan had never addressed it.

The QDOT: How the Fix Works

The solution is a Qualifying Domestic Trust, authorized under IRC § 2056A. When a deceased US citizen's estate passes to a QDOT for the benefit of a non-citizen surviving spouse, the unlimited marital deduction is restored — not permanently, but as a deferral mechanism. The estate tax that would otherwise be due immediately is postponed until distributions of principal are made from the trust, or until the surviving spouse's death, whichever comes first.

The QDOT structure has specific requirements that give the Treasury the jurisdictional hook it needs. At least one trustee must be a US citizen or US domestic corporation. Distributions of income to the surviving spouse can be made freely and without triggering estate tax — Maria can live off the income from the trust assets throughout her lifetime. Distributions of principal, however, trigger the deferred estate tax at the time of distribution (subject to a hardship exception for medical expenses and other qualifying situations). The remaining QDOT balance is subject to estate tax at the surviving spouse's death.

For David and Maria, the restructuring involved amending David's will to direct the taxable portion of his estate into a QDOT for Maria's benefit, with a Texas trust company serving as the required US-citizen trustee. Maria would receive all income for life, retain hardship access to principal, and hold a testamentary power of appointment to direct the remaining assets among their children and grandchildren — including Elena's new family. The plan accomplished everything the original will intended, with a tax-deferral structure layered in to address the citizenship gap.

The Naturalization Window: A Planning Tool Most Families Don't Know Exists

There is a second path that some non-citizen spouses can take — and it is less complicated than establishing a QDOT. Under IRC § 2056(d)(4), the unlimited marital deduction becomes available if the surviving spouse becomes a US citizen before the estate tax return is filed. The federal estate tax return is generally due nine months after the date of death, with a six-month extension available — giving the surviving spouse up to fifteen months to naturalize.

If a non-citizen spouse naturalizes within that window, the unlimited marital deduction applies retroactively. No QDOT is required. For non-citizen spouses who are already eligible to naturalize — generally, lawful permanent residents who meet the physical presence, continuous residence, and other requirements — this window can be the simpler solution. Naturalization is not a fast process; it typically takes six months to a year under favorable conditions. But a couple who identifies the issue proactively, before either spouse dies, can initiate the naturalization process in advance — keeping the window within reach if it's needed.

Maria's situation made this option realistic. As a permanent resident of more than thirty years, she met every naturalization eligibility requirement. She had simply never prioritized the process. After her WG Law consultation, she did. Her naturalization application was filed within sixty days of the estate plan review, with David's QDOT amendment in place as a backstop in the event the timing didn't work out. Either path would solve the problem. Having both options open simultaneously was the goal.

The Texas Community Property Layer

Texas adds an important dimension to this analysis — one that actually makes the QDOT issue more manageable for many couples. Under Texas Family Code § 3.002, property acquired during marriage is presumed to be community property, owned equally by both spouses. When David dies, Maria already legally owns half the community estate. That half is not part of David's estate and does not pass through his will — it passes directly to Maria by operation of law, outside the estate tax calculation entirely.

This means the QDOT and estate tax exposure applies specifically to David's half of the community estate plus his separate property — assets acquired before the marriage or received as gifts or inheritance during it. For a couple whose entire estate is community property, the federal estate tax exposure is cut in half before the analysis even begins. For a couple with significant separate property, the calculation requires more careful mapping.

David's commercial building was his separate property, purchased before he and Maria married. The home and rental duplex were community property, acquired during the marriage. Properly characterizing each asset mattered for two reasons: to correctly identify which assets were subject to the estate tax analysis, and to ensure that David's will was structured to direct the right assets into the QDOT while leaving the community property to flow directly to Maria.

Who This Issue Affects in North Texas

The Santos family situation is common across the Dallas-Fort Worth metroplex in a way that many estate planning attorneys don't fully recognize. Collin County has one of the fastest-growing immigrant populations in Texas. McKinney, Allen, Plano, Frisco, and Richardson are home to tens of thousands of families where one or both spouses immigrated from the Philippines, India, China, Korea, Nigeria, Mexico, and across Latin America, Southeast Asia, and the Middle East — and where one spouse may hold citizenship while the other is still a permanent resident.

Many of these families have substantial estates. They own businesses, investment properties, retirement accounts built over decades, and life insurance policies. They've had estate plans drafted — sometimes by general practice attorneys who weren't thinking about citizenship, sometimes by attorneys in other states whose home-state templates don't ask the question, sometimes decades ago when the estate was smaller and the issue less material. And most have never had a Texas estate planning attorney ask them: "Is your spouse a US citizen?"

The gap also affects couples in the other direction — where a US citizen spouse owns the estate and the non-citizen surviving spouse would receive it. Every will that says "I leave everything to my spouse" without addressing the marital deduction issue is a will that may produce an unexpected tax bill at exactly the moment a family can least absorb one.

What WG Law's International Estate Planning Team Brings

WG Law attorney Therese Gutierrez carries an LL.M. from Texas A&M University School of Law and a background in international law that she brings directly to clients navigating the intersection of immigration status and Texas estate planning. She conducts consultations in English, Filipino, and Tagalog — a genuine differentiator for Filipino-American families in Collin County, where many clients find it easier to discuss complex planning concepts in the language they think in. Her experience with cross-border estates means she understands the specific issues that arise when assets, beneficiaries, or surviving spouses span different legal systems.

The firm's broader estate planning team — including Taylor Willingham, who has guided over 10,000 Texas families through estate planning over his career — regularly reviews existing plans that were drafted without the citizenship question in mind. Many of those reviews are the first time the gap has been identified. The earlier it is caught, the more options exist to address it.

Powers of Attorney and Non-Citizen Considerations

The citizenship issue extends beyond the federal estate tax. A non-citizen spouse named as agent under a Texas durable power of attorney or medical power of attorney has full legal authority under Texas law — citizenship is not a prerequisite for serving as agent. But if the non-citizen spouse becomes incapacitated, the US-citizen spouse's ability to manage assets held in certain accounts or structures may be affected by the non-citizen status of the incapacitated principal. International assets — property held outside the United States, foreign bank accounts, business interests in the country of origin — may require separate planning under the laws of the country where they're held. A comprehensive plan for a family with international ties addresses all of these layers, not just the Texas-resident estate.

The Right Time to Ask the Question

David Santos asked for a review because his daughter was having a child. That was the right instinct for the wrong reason — he got the right answer because he came in the door, not because he knew what question to ask. For families where one spouse is not a US citizen, the right time to ask the citizenship question is before any estate plan is signed, and again at every review — because an estate can grow past the tax threshold over time even when it started below it.

This article is general information about federal estate tax law and Texas community property principles, not legal advice for your specific situation. The rules described here — IRC § 2056(d), § 2056(d)(4), and § 2056A — are federal tax law; Texas community property law governs the foundational asset characterization. Both layers interact in ways that require individualized analysis.

To discuss whether your estate plan addresses your spouse's citizenship status, contact WG Law at 214-250-4407 or request a consultation through our website. Our team serves McKinney, Allen, Frisco, Plano, Southlake, and families across the greater DFW metroplex. Consultations are confidential. For a broader overview of estate planning services for North Texas families, visit our estate planning practice area page.