A U.S. citizen or green card holder who marries a nonresident alien discovers a problem the first April afterward: the filing status that would save the most tax is not automatically available. Filing jointly with a nonresident alien spouse takes a deliberate election, and that election carries a price most people do not see until the second or third filing season. The choice among married filing separately, the Section 6013(g) election, and head of household is not a preference. It is a multi-year commitment with different reporting consequences attached to each path.
Can You File Jointly With a Nonresident Alien Spouse?
Not by default. A joint return under IRC §6013 generally contemplates two U.S. persons, and a nonresident alien is taxed only on U.S. source income and income effectively connected with a U.S. trade or business. Absent an election, the U.S. spouse's default status is married filing separately.
That leaves exactly three paths worth evaluating:
- Married filing separately. The default. Compressed brackets and lost credits, but your spouse's foreign income and accounts stay outside the U.S. system.
- The §6013(g) election. Both spouses elect to treat the nonresident as a U.S. resident, unlocking joint filing until the election ends.
- Head of household. Available if you are considered unmarried because your spouse is a nonresident alien and you support a qualifying person. Most taxpayers never hear about this one.
The right answer depends almost entirely on one variable: how much income and how many foreign assets your spouse has.
What Does the Section 6013(g) Election Actually Do?
The §6013(g) election treats your nonresident alien spouse as a U.S. resident for income tax purposes for the entire tax year, which makes a joint return possible. What most summaries underweight is the second half of the trade: your spouse is then taxed the way any U.S. resident is taxed, on worldwide income, not just U.S. source income. You are not electing a filing status. You are electing to bring another person's entire global financial life into the U.S. tax system.
Whether the election wins comes down to arithmetic. If your spouse has little or no income, the extra $16,100 of standard deduction plus wider brackets is close to free money. If your spouse earns a foreign salary, holds a foreign pension, or owns foreign mutual funds, the election can create more tax and far more compliance cost than the deduction ever returns.
How Do You Make the Section 6013(g) Election?
You make the election by attaching a statement signed by both spouses to the joint return for the first year the election applies. The statement must declare that one spouse was a nonresident alien and the other a U.S. citizen or resident on the last day of the tax year, that you both choose to be treated as U.S. residents for the entire tax year, and it must list the name, address, and taxpayer identification number of each spouse.
Two mechanical points cause most of the delays:
- Your spouse needs an SSN or ITIN. A nonresident alien spouse cannot be included on a return without one. If they are not eligible for a Social Security Number, they apply for an ITIN on Form W-7, normally filed together with the paper return rather than in advance.
- The election can be made on an amended return. If you already filed separately, you can elect on Form 1040-X within the statute of limitations, provided both spouses sign the statement. The IRS also requires that you and your spouse amend any returns you filed after the year for which the choice is made, so the election is applied consistently across every year it covers.
Once filed, the election applies to all later years unless suspended or ended. There is no annual renewal and no annual opt-out.
Can You Revoke the Section 6013(g) Election Later?
You can end it, but you almost certainly cannot restart it. The election terminates on revocation by either spouse, the death of either spouse, legal separation, or an IRS determination that records are inadequate. Once terminated, IRS guidance describes it as a once-in-a-lifetime choice that cannot be made again in any later year.
Treat the Election as Permanent
CautionThe statutory text of IRC §6013(g)(6) bars a repeat election by the same two individuals. Published IRS guidance states the bar more broadly, describing it as a once-in-a-lifetime choice that applies even if you later marry someone else. The planning implication is identical under either reading: make this election once, deliberately, with a multi-year projection in hand. A taxpayer who elects in a low-income year and revokes when the spouse's foreign salary rises does not get to elect again when circumstances change back.
Note that the election is suspended, rather than terminated, for any later year in which neither spouse is a U.S. citizen or resident. Suspension does not trigger the permanent bar.
What About the Year Your Spouse Moves to the United States?
That is a different election. IRC §6013(h) covers the transition year: a spouse who is a nonresident at the beginning of the tax year and a resident at the close of it, and who is married to a U.S. citizen or resident, can elect with that spouse to be treated as a U.S. resident for the entire year, which permits a joint return for the year of arrival.
The distinction that matters in practice:
- §6013(g) is ongoing, for a spouse who remains a nonresident, and continues into all later years until ended.
- §6013(h) is a one-year fix for the arrival year, used when the spouse has already become a U.S. resident by year end, typically by meeting the substantial presence test or receiving a green card mid-year.
Without one of these elections, an arriving spouse files a dual-status return, and dual-status filers generally cannot claim the standard deduction and cannot file jointly. That restriction is why §6013(h) is frequently worth making in the arrival year even for taxpayers who would decline §6013(g) in a normal year.
One caution: §6013(h) is not consequence free. It carries its own once-only bar under §6013(h)(2), and that bar is stricter than the §6013(g)(6) version, because it is triggered by having made the election at all rather than by a termination. Neither spouse can use §6013(h) again in a later arrival year.
Is Married Filing Separately Actually That Bad?
It costs real money, and it is still the right answer more often than most taxpayers expect. For 2026 it gives a $16,100 standard deduction against compressed brackets, and it commonly disallows or reduces education credits, the student loan interest deduction, and certain other benefits.
What it buys is containment. Your spouse's foreign salary, pension, rental property, and brokerage account stay outside the U.S. return entirely, and their financial life is not a U.S. reporting event. Where the nonresident spouse earns substantial foreign income already taxed abroad, the separate return is frequently both cheaper and dramatically simpler than a joint return plus a foreign tax credit calculation on that income. One common misconception is worth clearing up: an ITIN or SSN for your spouse is required for the §6013(g) election, and whenever that spouse files their own U.S. return, but it is not required when you file separately and your spouse has no U.S. filing obligation. The Form 1040 instructions require the number only where you file jointly or your spouse files a separate return. Otherwise you enter your spouse's name and NRA in the space for the number, which also means the return must be paper filed, because NRA cannot be transmitted electronically. The same applies on the head of household path.
Can You File as Head of Household With a Nonresident Alien Spouse?
Often yes, and this is the most underused option in the set. IRS Publication 501 provides that you are considered unmarried for head of household purposes if your spouse was a nonresident alien at any time during the year and you do not choose to treat that spouse as a resident alien. That gives a $24,150 standard deduction for 2026 and materially better brackets than filing separately, without exposing any of your spouse's income.
The conditions still have to be met:
- You must pay more than half the cost of keeping up your home for the year.
- You must have a qualifying person. Once the nonresident spouse rule makes you considered unmarried, the general qualifying person test applies. That is usually a child, stepchild, or foster child who lived in your home more than half the year, and in most cases whom you can claim as a dependent, though a custodial parent who released the exemption on Form 8332 can still use that child as the qualifying person. A dependent parent also qualifies and does not have to live with you, provided you pay more than half the cost of keeping up their main home for the year.
- Your nonresident alien spouse is not a qualifying person. You need someone else.
- This route and the §6013(g) election are mutually exclusive. Electing to treat your spouse as a resident is precisely what disqualifies you from being considered unmarried.
For a U.S. parent with a child in the household and a nonresident spouse abroad, head of household captures most of the rate benefit of a joint return while leaving the spouse's worldwide income and foreign accounts entirely out of the U.S. system.
When Is the Section 6013(g) Election the Wrong Move?
It is a mistake whenever the compliance drag and added tax on your spouse's foreign income exceed the value of the larger deduction and wider brackets. Four fact patterns turn it negative quickly.
Substantial Foreign Earned Income
A meaningful foreign salary becomes U.S. taxable the moment the election is in effect. Relief may come from the foreign earned income exclusion or the foreign tax credit, but both require additional forms and neither is guaranteed to fully offset the liability. A $16,100 deduction increase does not outrun tax on a six-figure salary earned in a low-tax country.
Foreign Pensions and Retirement Accounts
Foreign retirement arrangements rarely receive the same treatment as a U.S. 401(k). Depending on the plan and the applicable treaty, growth inside the plan may be currently taxable, and the arrangement may carry its own information reporting. Treaty relief is country by country and cannot be assumed.
Foreign Mutual Funds and Pooled Investments
The sharpest trap. Ordinary foreign mutual funds, ETFs, and many insurance-wrapper products are generally passive foreign investment companies, carrying a punitive interest charge regime and a separate Form 8621 for each fund. A routine foreign brokerage account holding ten funds can generate ten additional forms.
Large Foreign Account Balances
Once your spouse is treated as a U.S. resident, their specified foreign financial assets, including their foreign accounts, come within Form 8938 reporting. Treas. Reg. §1.6038D-1(a)(2) makes a nonresident alien for whom a §6013(g) or (h) election is in effect a specified individual, so the election is what pulls those assets onto the form.
The election does not extend FBAR to your spouse. FinCEN stated in the FBAR final rule preamble that residency for FBAR purposes is determined without regard to elections under §6013(g) or §6013(h), because FBAR is a Title 31 filing and 31 CFR 1010.350(b)(2) tests residency under 26 U.S.C. §7701(b), while §6013(g)(1) reaches only chapters 1 and 24. FBAR therefore reaches your spouse's own accounts only if that spouse is independently a U.S. person, or if you have a financial interest in or signature authority over the account, and that is true with or without the election. Form 8938 is still a penalty-heavy filing, and the exposure lasts as long as the election stands.
Does the Unlimited Marital Deduction Apply to Gifts to a Non-Citizen Spouse?
No, and this catches couples entirely separately from the income tax question. Transfers between spouses normally qualify for an unlimited marital deduction, but that deduction is not available for gifts to a spouse who is not a U.S. citizen. Instead, a special elevated annual exclusion applies, $194,000 for 2026 under Rev. Proc. 2025-32, against the ordinary $19,000 exclusion for other recipients.
The rule keys on citizenship, not residency, so it reaches a green card holder spouse and survives a §6013(g) election, which governs income tax and not the gift tax marital deduction. Note that ordinary intra-family transactions can be gifts: retitling a house into joint names or moving substantial funds into a spouse's separate account can cross the threshold and require a gift tax return.
The estate tax counterpart is the larger exposure. Under IRC §2056(d), property passing to a surviving spouse who is not a U.S. citizen does not qualify for the estate tax marital deduction either, so an estate that would have passed tax free to a citizen spouse can face tax at the first death. The standard fix is a qualified domestic trust, or QDOT, under §2056A: property that passes to a QDOT with a U.S. trustee and the required withholding provisions qualifies for the deduction, with estate tax deferred until principal distributions or the surviving spouse's death. Couples in this position should have the QDOT language reviewed in the will or revocable trust well before it is needed.
Bottom Line
Filing jointly with a nonresident alien spouse is available only through the §6013(g) election, and that election is best understood as a permanent decision rather than a filing-season convenience. It delivers the $32,200 joint standard deduction and wider brackets for 2026, and in exchange it makes your spouse's worldwide income taxable and their foreign accounts, assets, and investment funds reportable, potentially for the rest of your marriage. Where the nonresident spouse has little income and few foreign assets, the election is usually the clear winner. Where that spouse has a real foreign salary, a foreign pension, or a foreign brokerage account, married filing separately or head of household frequently produces a better after-tax, after-compliance result.
Run the multi-year projection before you sign the statement, not after. Our international tax and cross-border tax teams model all three paths and scope the Form 8938 and PFIC work an election would create. Have questions about filing with a nonresident alien spouse or the Section 6013(g) election? Contact TS CPA for a free consultation. We respond within the same day.
Official IRS and Government Sources
- IRS, Nonresident Spouse Treated as a Resident
- IRC Section 6013, Joint Returns of Income by Husband and Wife
- IRS Publication 501, Dependents, Standard Deduction, and Filing Information
- IRS Publication 519, U.S. Tax Guide for Aliens
- IRS About Form W-7, Application for IRS Individual Taxpayer Identification Number