Non-Citizen Spouse and the Estate Tax: The QDOT Rule (California)

By Eric Ridley, attorney, Ridley Law. Updated October 2026.

Estate size this page covers: estates where the U.S. citizen spouse’s own share is near or above the 2026 exemption of $15 million. Below that, the QDOT question rarely matters, but the $194,000 yearly gift limit and the joint tenancy rule below apply at every size. For larger estates, see ultra high net worth estate planning in California.

Figures verified against the Internal Revenue Code and IRS 2026 inflation figures. The $15M exemption is from the One Big Beautiful Bill Act, P.L. 119-21. This page is general information, not legal advice for your situation.

The QDOT question rarely matters below $15 million

Most people reading this don’t need a QDOT. The federal estate tax exemption is $15 million per person in 2026, and the statute has no sunset: the old “sunset back to $7M” was repealed. California has no state estate tax and no state inheritance tax on top of that. So a couple has to be sitting above roughly $15 million before the estate tax even enters the picture.

Run the Ventura County math. A couple owns a $1.2 million Camarillo home, $900,000 in retirement accounts, and $400,000 in savings: call it $2.5 million. One spouse is a green-card holder, not a citizen. Do they need a QDOT? No. They’re nowhere near $15 million, so nothing would be taxed at the first death, and the QDOT solves a problem they don’t have. Building one in would add cost and complexity for zero benefit.

Take a hypothetical couple, Sam and Lena. Sam is a U.S. citizen and dies in 2026. Lena holds a green card and isn’t a citizen. His half of their California community property is $20 million, $5 million more than the 2026 exemption. Lena’s half is hers and isn’t in Sam’s estate. The chart shows the federal estate tax under five paths, at a flat 40% on amounts over the exemption (IRC § 2001(c)).

Sam’s $15 million exemption covers everything except the $5 million that goes to Lena or her QDOT, and he made no taxable gifts. Once the exemption is used, each dollar of QDOT principal is taxed at Sam’s 40% rate when it comes out, however small Lena’s own estate is. If Lena naturalizes in time, the $5 million becomes part of her own estate, and her own exemption applies at her death.

The couples who should plan for it are those whose combined estate is at or above the exemption (larger business owners, large real estate holdings, big investment portfolios), a wealthy spouse leaving substantial assets to a non-citizen spouse, including a green-card-holder spouse, and couples whose net worth is growing toward that range and who want the QDOT language ready in the trust in case it’s needed.

If that’s you, this belongs in a real conversation about estate tax planning and, for larger estates, the broader strategies for high-net-worth families. If it’s not you, one paragraph in a normal plan covers everything you need, and the specifics of estate planning for non-citizens in California matter more for your everyday planning than the estate tax does.

Why the marital deduction disappears when the survivor isn’t a citizen

Normally, spouses can leave each other unlimited assets with zero estate tax, thanks to the unlimited marital deduction (IRC § 2056(a)). It’s the backbone of most married couples’ planning: the first spouse to die passes everything to the survivor, tax deferred, and the estate tax only comes up (if at all) at the second death.

Congress carved out one exception: the unlimited marital deduction does not apply if the surviving spouse is not a citizen of the United States (IRC § 2056(d)). The worry is straightforward: a non-citizen spouse could inherit a large estate tax-free and then move abroad, out of reach of the IRS, so the U.S. would never collect the tax it deferred. Assets above the exemption passing to them can be hit with estate tax at the first death, the exact thing the marital deduction usually prevents. Note this is about citizenship, not residency or immigration status. A green-card holder is still a non-citizen for this rule.

A QDOT restores the deferral, and the tax follows the principal out

The workaround is a qualified domestic trust, or QDOT (IRC § 2056A). Instead of leaving assets outright to your non-citizen spouse, you leave them to a QDOT for the spouse’s benefit. That restores the deferral: the estate tax is postponed, not erased, until the survivor either takes principal out of the trust or dies. The key requirements are that at least one trustee must be a U.S. citizen or domestic corporation, and for larger QDOTs the trust must meet security rules so the IRS can eventually collect. The surviving spouse can receive all the income and even principal in a hardship, but principal distributions generally trigger the deferred tax, which is the government’s way of making sure it isn’t skipped.

A QDOT can be built into your trust from the start, or a surviving spouse can sometimes set one up after the first death within a filing deadline. Either way, it’s precise tax drafting, and it’s coordinated with the estate tax return (Form 706).

What a QDOT has to say

A trust is a QDOT only if it meets four conditions under IRC § 2056A(a), and the election to treat it as one can’t be undone. At least one trustee must be a U.S. citizen or a domestic corporation. No distribution other than income can be made unless that U.S. trustee has the right to withhold the QDOT tax from it. The trust has to meet the Treasury’s collection rules. And the executor has to elect QDOT treatment on the estate tax return. The election is irrevocable, and it can’t be made on a return filed more than one year after the due date, including extensions (IRC § 2056A(d)).

How much security the trust needs depends on the value of the QDOT assets at death, and up to $600,000 of a personal residence can be left out of the count.

A plan that misses the QDOT can sometimes be repaired after death

Both repairs have a deadline tied to the estate tax return. Property that passes to the spouse outright still counts as passing to a QDOT if the spouse transfers it to one, or irrevocably assigns it to one, before the estate tax return is filed (IRC § 2056(d)(2)(B) and Treas. Reg. § 20.2056A-1). And a trust that falls short can be reformed into a QDOT in a court proceeding started by the return’s due date (IRC § 2056(d)(5)).

The deferred tax is the first spouse’s estate tax, charged when principal leaves the trust

The QDOT tax is the first spouse’s estate tax, deferred, so a survivor with a modest estate of her own doesn’t get a lower rate on QDOT money. It’s computed as if the distribution, or the trust balance at the survivor’s death, had been added to the first spouse’s taxable estate (IRC § 2056A(b)(2)), so the rate depends on the first spouse’s estate.

Income can go to the spouse without QDOT tax, but capital gains don’t count as income. Income paid to the spouse isn’t taxed under the QDOT rules (§ 2056A(b)(3)(A)), and for this purpose income doesn’t include capital gains (Treas. Reg. § 20.2056A-5(c)(2)), so a trust that sells appreciated stock can’t pass the gain to the spouse tax free as “income.”

Principal is taxed when it comes out unless the spouse needs it for hardship (§ 2056A(b)(3)(B)). The regulation defines hardship as an immediate and substantial financial need relating to the health, maintenance, education or support of the spouse or someone the spouse is legally obligated to support. It doesn’t count if the money could come from other sources reasonably available to the spouse, such as publicly traded stock or a certificate of deposit the spouse owns. Closely held business interests, real estate and tangible personal property aren’t treated as reasonably available. A hardship distribution is tax free but still has to be reported (Treas. Reg. § 20.2056A-5(c)(1)).

The trustee carries the filing and the liability. The U.S. trustee files Form 706-QDT. For taxable or hardship distributions, it’s due by April 15 of the year after the distribution. When the surviving spouse dies, the return is due nine months after the death and must include that year’s distributions. Each trustee is personally liable for the QDOT tax (§ 2056A(b)(6)).

Citizenship for the survivor can make the QDOT unnecessary, if the return isn’t held up

The surviving spouse can become a citizen instead, and it’s often the cleanest fix, if two conditions are met: the spouse becomes a citizen before the estate tax return is made, and the spouse was a U.S. resident at all times after the death (IRC § 2056(d)(4)). The regulation treats a return filed early as filed on its due date, including extensions, and a late return as filed on the date it’s filed (Treas. Reg. § 20.2056A-1(b)). A spouse who naturalizes after a QDOT is set up can also end the QDOT tax on later distributions if residence and the other conditions in IRC § 2056A(b)(12) are met.

The estate in Estate of Liftin v. United States (Fed. Cir. 2014) 754 F.3d 975 was assessed a penalty for waiting past naturalization. Morton Liftin died in March 2003. His widow was a citizen of Bolivia. Counsel advised the executor to hold the Form 706 until she naturalized so the estate could take the marital deduction. She became a citizen on August 3, 2005, but the executor didn’t file until May 9, 2006, after settling separate litigation with her. The IRS didn’t dispute the marital deduction. It assessed a late-filing penalty, which the IRS reduced on administrative appeal to $135,714.45. The Court of Federal Claims found reasonable cause for the wait until naturalization, but none for the nine months after it, and the Federal Circuit affirmed, so the IRS won on penalties. The citizenship route worked. Waiting past it cost the estate the maximum penalty, so the return should go in promptly once the spouse is a citizen.

Where California property and title change the exposure

Community property shrinks the problem

A QDOT only has to cover the citizen spouse’s half of the community property and that spouse’s separate property. At a California spouse’s death, half the community property already belongs to the survivor (Prob. Code § 100), and the gross estate includes property only to the extent of the decedent’s interest in it (IRC § 2033). So the non-citizen spouse’s own half of the community never needs a QDOT. Both halves still get a new income tax basis at the first death under IRC § 1014(b)(6), because the citizen spouse’s half is in that spouse’s estate.

Joint tenancy works differently

Holding the house as joint tenants can put the whole value in the first spouse’s estate when the survivor isn’t a citizen. When both spouses are citizens, only half of property they hold as joint tenants is counted in the first spouse’s estate. That 50/50 rule in IRC § 2040(b) is turned off when the surviving spouse isn’t a citizen (§ 2056(d)(1)(B)). The general rule of § 2040(a) applies instead: the whole value is in the first estate except the part the survivor can show she paid for. California couples often hold the house as joint tenants or as community property with right of survivorship; with a non-citizen spouse, the title choice changes the estate tax math. See community property with right of survivorship vs. joint tenancy.

Changing what’s separate and what’s community

Before anyone signs a transmutation with a non-citizen spouse, ask whether it is also a gift that runs past the $194,000 yearly limit. A transmutation between spouses is valid only if it’s in writing, by an express declaration joined in or accepted by the spouse whose interest is adversely affected (Fam. Code § 852).

Estate tax treaties

A treaty can shift which country taxes what, so check for one before relying on a QDOT alone. The IRS lists estate or gift tax treaties with 15 countries: Australia, Austria, Canada, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Japan, the Netherlands, South Africa, Switzerland and the United Kingdom. Canada’s estate tax provisions sit in Article XXIX B of the U.S.-Canada income tax treaty (IRS, Estate and Gift Tax Treaties). If a spouse is thinking about giving up citizenship or a green card instead, that’s a different tax regime: see expatriation tax and estate planning.

Tax-free gifts to a non-citizen spouse top out at $194,000 a year

Lifetime gifts have their own ceiling when the spouse isn’t a citizen. Normally you can give your spouse unlimited gifts tax-free. But gifts to a non-citizen spouse are capped: in 2026 the annual exclusion for gifts to a non-citizen spouse is $194,000. Go above that in a year and you’re into gift-tax reporting. It rarely bites ordinary couples, but if you’re retitling assets or making large transfers to a non-citizen spouse, it’s worth knowing the ceiling exists.

The ceiling is indexed. IRC § 2523(i)(2) replaces the unlimited marital deduction for gifts to a non-citizen spouse with an annual exclusion that started at $100,000, and Rev. Proc. 2025-32 sets it at $194,000 for 2026. The ordinary annual exclusion for gifts to anyone else is $19,000 in 2026.

Working with Ridley Law

The call is for California couples where one spouse isn’t a U.S. citizen and the estate is near or above the exemption, and for trustees and executors dealing with a QDOT after a death. The first call is free and runs 30 minutes, by phone or Zoom. I work alongside your CPA and, where the matter calls for it, co-counsel. Work at this level is built for each family and quoted in writing before any drafting starts.

Book my 30-minute call or call 805-244-5291.

Frequently asked questions

Can I leave everything to my non-citizen spouse tax-free?

Not automatically. The unlimited marital deduction under IRC § 2056(a) doesn’t apply to a non-citizen surviving spouse (IRC § 2056(d)), so assets above the exemption could be taxed at the first death. To defer the tax, the assets generally have to pass through a QDOT. Below the $15 million exemption, though, there’s usually no tax to worry about anyway.

What is a QDOT and how does it work?

A QDOT (qualified domestic trust, IRC § 2056A) holds assets for a non-citizen surviving spouse and restores the estate-tax deferral the marital deduction would normally give. It requires a U.S. citizen or domestic corporate trustee and security for larger trusts. The tax is postponed until the spouse takes principal out or dies. It’s deferred, not eliminated.

Does my green-card-holder spouse count as a non-citizen for this?

Yes. The rule turns on citizenship, not immigration or residency status, so a lawful permanent resident (green-card holder) is treated as a non-citizen for the marital deduction. One common option is for the surviving spouse to become a U.S. citizen before the estate tax return is due, including any extension. That can restore the normal marital deduction if the spouse was a U.S. resident at all times after the death (IRC § 2056(d)(4)).

Do most couples with a non-citizen spouse need a QDOT?

No. With a $15 million per-person federal exemption and no California estate tax, a couple generally has to be worth around $15 million or more before the estate tax matters at all. Most families are far below that, so a QDOT would solve a problem they don’t have. It’s a tool for larger estates.

How much can I gift my non-citizen spouse each year?

In 2026, up to $194,000 to a non-citizen spouse before gift-tax reporting kicks in: the unlimited spousal gift rule doesn’t apply here. That’s usually plenty for ordinary transfers, but large retitling or funding moves can exceed it, so keep the ceiling in mind if you’re shifting significant assets.

Who can be the trustee of a QDOT?

At least one trustee must be a U.S. citizen or a domestic corporation, with the right to withhold the QDOT tax from any principal distribution (IRC § 2056A(a)). If the QDOT holds more than $2 million at death, the trust also needs a U.S. bank as trustee, a bond, or a letter of credit for 65% of its value (Treas. Reg. § 20.2056A-2(d)).

Can a QDOT be set up after the first spouse dies?

Yes. The surviving spouse can transfer or irrevocably assign inherited property to a QDOT before the estate tax return is filed (IRC § 2056(d)(2)(B)), and a trust can be reformed in a court proceeding started by the return’s due date (§ 2056(d)(5)). The executor’s election must be made no later than one year after the return’s due date (§ 2056A(d)).

Are distributions from a QDOT taxed?

Income distributions aren’t. Principal distributions are taxed at the first spouse’s estate tax rate unless they’re made on account of hardship (IRC § 2056A(b)(3)). For QDOT purposes, capital gains aren’t income (Treas. Reg. § 20.2056A-5(c)(2)). The U.S. trustee reports distributions on Form 706-QDT by April 15 of the next year.