Dual-Status Tax Return: Can You File Married Filing Jointly?

A married couple can file a joint federal return when one spouse is dual-status, but only by making a specific election under Internal Revenue Code Section 6013(g) or 6013(h) that treats the nonresident spouse as a U.S. resident for the entire year. Without that election, a dual-status taxpayer cannot file jointly and defaults to married filing separately, with no standard deduction and limited access to credits.¹ The election opens up the joint brackets, the $32,200 married-filing-jointly standard deduction for 2026, and several credits, but it also pulls both spouses’ worldwide income into the return for the full twelve months.²

Why You Need an Election at All

A dual-status year is one where your residency classification changes partway through the calendar year, typically because a foreign national arrives in the U.S. and meets the green card test or substantial presence test during the year. Under the default dual-status rules, you cannot file jointly even if you were married on December 31, you cannot use the standard deduction, and you cannot claim head of household status.¹ For a married couple, the default is married filing separately, which carries the highest rate brackets and the fewest credits. The 6013 elections exist to get you out of that default.

Which Election Applies to You

There are two, and they cover different fact patterns. Pick the wrong one and the filing is invalid.

Section 6013(g): Your Spouse Is Still a Nonresident at Year-End

Use this election when one spouse is a U.S. citizen or resident alien and the other is a nonresident alien on the last day of the year. Both spouses agree in writing to treat the nonresident as a U.S. resident for the entire year, and the dual-status split disappears.³ The election does not expire after one year. Once made, it applies to every later year until it is terminated or suspended.

Section 6013(h): Your Spouse Became a Resident During the Year

Use this one when a spouse started the year as a nonresident alien, became a U.S. resident by December 31, and is married to a citizen or resident at year-end. Both spouses elect to treat the newly resident spouse as a resident for the whole year, which eliminates the nonresident portion and lets you file jointly.³ Unlike the 6013(g) election, this one is a one-time event. It applies only to the year of the status change and can never be used again. That limitation rarely bites, because the spouse is a full-year resident from the following year onward and you can file jointly under normal rules.

What You Gain

The joint rate brackets are the headline benefit. A couple filing jointly in 2026 also gets a $32,200 standard deduction, which dual-status filers using the default rules cannot claim at all.²

Several credits open up too. Married taxpayers generally cannot claim the Earned Income Tax Credit when filing separately, with only a narrow exception for spouses who lived apart for the last six months of the year.⁴ The Child and Dependent Care Credit follows the same pattern: married filing separately generally disqualifies you.⁵ Education credits are similarly restricted for dual-status filers who don’t make the election.¹

What You Give Up

Both spouses must report combined worldwide income for the full twelve months. That includes wages earned abroad, foreign rental income, interest from overseas bank accounts, and any other income that would otherwise escape U.S. taxation during the nonresident period.⁶ For a spouse who earned substantial income in another country before arriving, the added U.S. tax can wipe out the joint-filing savings.

Tax Treaty Positions

A spouse who makes the 6013(g) election cannot then use a tax treaty to claim they are not a U.S. resident for income tax purposes. The Treasury regulations are explicit: once you elect to be treated as a U.S. resident, you cannot invoke treaty provisions to avoid U.S. taxation on specific income categories by claiming nonresident status.⁷ If a treaty would have shielded meaningful income from U.S. tax, the election can cost more than it saves.

Form 8938 and Foreign Assets

Electing full-year resident status brings FATCA reporting into play. A couple filing jointly and living in the U.S. must file Form 8938 if their specified foreign financial assets exceed $100,000 on the last day of the tax year or $150,000 at any point during the year.⁸ Penalties for missing Form 8938 start at $10,000. Information returns for foreign trusts, foreign corporations, or foreign partnerships may also be triggered.

FBAR Is Not Triggered by the Election Alone

The FBAR (FinCEN Form 114, required when foreign accounts exceed $10,000 in aggregate) uses a different definition of “United States person” that turns on residency under IRC 7701(b), not on a 6013 election.⁹ The IRS has confirmed that a nonresident spouse treated as a resident only because of a 6013(g) or 6013(h) election is not required to file an FBAR based on that election alone.¹⁰ The resident spouse still has FBAR obligations for any foreign accounts they own or have signature authority over.

How to File the Joint Return

Attach a written statement to your joint return for the first year the election applies. The statement must include a declaration that one spouse was a nonresident alien and the other a U.S. citizen or resident alien on the last day of the tax year, and that both spouses choose to be treated as U.S. residents for the full year. It also needs identifying information for both spouses: full names, current addresses, and taxpayer identification numbers.⁶ Specify whether you are electing under Section 6013(g) or 6013(h), since the two have different durations. Both spouses must sign. If one refuses, the election is invalid.

File on Form 1040 with the married-filing-jointly box checked, attach the signed statement to the front of the return, and mail the package to the service center listed in the Form 1040 instructions for your state. Because the statement must be physically attached, these returns generally have to be paper-filed.⁶

If the Nonresident Spouse Needs an ITIN

A nonresident spouse without a Social Security Number will need an Individual Taxpayer Identification Number. Apply for one by completing Form W-7 and attaching it to the front of the joint return along with original identification documents or certified copies from the issuing agency. Under “Reason You’re Submitting Form W-7,” select the category for spouse of a U.S. citizen or resident alien.¹¹ The W-7, election statement, and joint return all go in the same mailing package.

How Long the Election Lasts

A 6013(h) election covers only the year of the status change and cannot be used again. Nothing further to track.³

A 6013(g) election is the one that keeps running. It stays in effect for every year after the election year until one of four things terminates it:³

Revocation. Either spouse can revoke by attaching a signed statement to their return for the first year they want the election to stop. The revocation must be filed by the due date, including extensions, for that year’s return.
Death. The election ends at the start of the first tax year after the year a spouse dies, unless the surviving spouse qualifies for surviving-spouse filing status, in which case it extends through the last year that status applies.
Divorce or legal separation. The election ends at the beginning of the tax year in which the legal separation occurs.
IRS termination. The IRS can terminate if either spouse fails to keep adequate books, provide access to records, or supply information needed to determine tax liability.

The election is also automatically suspended for any year in which neither spouse is a U.S. citizen or resident at any point during the year. Once either spouse regains that status, the election resumes without needing to be re-filed.⁷

One trap is worth flagging. Once a 6013(g) election is revoked or terminated (as opposed to merely suspended), neither spouse can ever make the same election again for any future tax year.⁶ Revoking to save on one year’s taxes closes the door permanently.

When Filing Jointly May Not Pay Off

The math tilts toward the election when the nonresident spouse earned little abroad and the couple has children or dependent care costs that unlock credits. It tilts the other way when the nonresident spouse earned substantial foreign income during the nonresident portion of the year, because electing full-year resident status pulls all of that into U.S. tax. Foreign tax credits may offset some of the additional liability but don’t always cover it, especially where the foreign country’s rate is lower than the U.S. rate.

Couples with significant foreign financial assets should also weigh the compliance load: Form 8938 and, potentially, information returns for foreign trusts, corporations, or partnerships, each carrying steep penalties for late or missed filings.

Run the numbers both ways before committing. Prepare a draft dual-status return (married filing separately, no standard deduction, only U.S.-source income for the nonresident period) alongside a draft joint return with worldwide income. When the two are close, the standard deduction and credits often decide it; when they aren’t, the foreign reporting exposure and any lost treaty positions can pull the answer back.

1
Internal Revenue Service. Taxation of Dual-Status Individuals
2
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
3
Office of the Law Revision Counsel. 26 USC 6013 – Joint Returns of Income Tax by Husband and Wife
4
Internal Revenue Service. Who Qualifies for the Earned Income Tax Credit (EITC)
5
Internal Revenue Service. Topic No. 602, Child and Dependent Care Credit
6
Internal Revenue Service. Publication 519 – U.S. Tax Guide for Aliens
7
eCFR. 26 CFR 1.6013-6 – Election to Treat Nonresident Alien Individual as Resident of the United States
8
Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets
9
eCFR. 31 CFR 1010.350
10
Internal Revenue Service. 4.26.16 Report of Foreign Bank and Financial Accounts
11
Internal Revenue Service. Instructions for Form W-7