The year you move to the United States, and the year you leave it, are almost never ordinary tax years. In each you are a nonresident alien for part of the year and a resident alien for the rest, and a dual-status alien tax return is how you report both periods on one filing. Most of the cost is not the tax on the income itself. It is the restrictions that come with dual-status filing, which strip away the standard deduction, joint filing, and several credits unless you make a specific election to get them back.
What Makes a Tax Year "Dual-Status"?
A tax year is dual-status when your US tax residency changes partway through it. You are a nonresident alien for the days before the change and a resident alien for the days after, and each period is taxed under its own rules on a single return. Three events produce one:
- Arrival. You move to the United States and first meet the substantial presence test or receive a green card during the year.
- Departure. You leave the United States permanently and your residency terminates before December 31.
- Expatriation. You abandon or lose your green card, or you renounce US citizenship.
Physical presence alone does not create a dual-status year. What matters is the date your residency legally starts or ends, and that date has its own rules.
When Exactly Does Your US Residency Start?
If you become a resident under the substantial presence test, your residency starting date is generally the first day you were present in the United States during that calendar year. If you become a resident under the green card test, it is the first day in the calendar year on which you are present in the US as a lawful permanent resident.
Two details here are frequently missed.
First, the date tracks your first day of presence in that calendar year, not the day you signed a lease or the day the visa issued. A single business trip in February can pull your starting date back nine months from your October relocation.
Second, the de minimis presence rule blunts exactly that. Under IRS Publication 519 you can exclude up to 10 days of actual US presence in determining your residency starting date, provided your tax home was in a foreign country on those days and you had a closer connection to that country. The exclusion sets the starting date only; you still count those days when applying the substantial presence test itself. Excluded days can span multiple trips, as long as the total stays at 10 or fewer and you exclude a full period of consecutive days rather than part of one.
When Does Your US Residency End?
By default, if you are a resident under the substantial presence test, your residency ends on December 31 of the year you depart, which means the departure year is a full resident year rather than a dual-status year. An earlier residency termination date is available, but only if you meet specific conditions.
To use the earlier date you must be absent from the US for the rest of the year, maintain a tax home in a foreign country and a closer connection to that country than to the US for the remainder of the year, and not be a US resident again the following calendar year. Meet all three and your termination date becomes your last day of physical presence in the United States. The same 10-day de minimis exclusion applies here, so brief return trips do not automatically extend your residency.
Green card holders run on a different rule. If you are a resident under the green card test, your residency does not turn on your last day of presence or on a closer connection at all. It continues until you formally abandon lawful permanent resident status, until USCIS or a court administratively or judicially revokes or determines the abandonment of that status, or until a treaty tie-breaker position is properly taken. Simply moving abroad and staying away does not end it, and the green card keeps generating full worldwide-income resident filing obligations until one of those events happens.
This is where departing taxpayers most often get caught. Returning for two weeks in December, or moving abroad without establishing a genuine foreign tax home, converts an assumed partial-year filing into a full year of US tax on worldwide income.
Which Income Belongs in Which Period?
The two periods use two different tax bases, and every item of income has to be assigned to one of them by date.
- Resident period: worldwide income, taxed at graduated rates, reported as a resident would report it on Form 1040. Foreign salary, foreign rental income, and foreign investment income are all included for these months.
- Nonresident period: only US-source income and income effectively connected with a US trade or business, reported on the Form 1040-NR framework. Effectively connected income is taxed at graduated rates on a net basis, while fixed, determinable, annual, or periodical income such as US dividends is generally subject to 30% gross withholding unless a treaty lowers the rate.
The practical work is allocation. Bonuses, deferred compensation, equity vesting, and capital gains often straddle the residency date, and the answer turns on when the income was earned or realized rather than when it was paid. Foreign account reporting runs on its own thresholds, so a dual-status year can still carry FBAR obligations for the resident period.
How Do You Actually File a Dual-Status Return?
You file one return for the year, and your status on the last day of the tax year determines which form is the return and which is the attached statement. This is the most-confused mechanic in dual-status filing, and it is routinely stated backwards.
In both directions, write Dual-Status Return across the top of the return and Dual-Status Statement across the top of the attached form. The statement is a support schedule, not a second return: it carries the income for its period, while the tax for the full year is computed on the return itself. Both are filed together as one submission. Calendar-year filers are due April 15, though a departing taxpayer filing Form 1040-NR with no wages subject to US withholding generally has until June 15.
What Can You Not Do on a Dual-Status Return?
Dual-status filing comes with a set of restrictions that are usually more expensive than the income allocation itself.
Dual-Status Filing Restrictions
Caution- No standard deduction. You must itemize. The narrow exception is for certain students and business apprentices from India who qualify under the US-India income tax treaty.
- No joint return. You generally cannot file married filing jointly absent an election under IRC Section 6013(g) or 6013(h).
- No head of household status. Not available to dual-status filers.
- No married filing jointly rate brackets. Without an election, a married dual-status filer who is married to a US citizen or resident generally uses married filing separately rates. A dual-status filer married to a nonresident alien generally uses the single rate column under the Form 1040-NR rules instead.
- Restricted credits. Certain credits, including the earned income credit and some education credits, are unavailable or restricted for a dual-status year, and some require a joint return you are not permitted to file.
For a married taxpayer who moved mid-year, that means losing the $32,200 married filing jointly standard deduction for 2026 and landing on separate-filer brackets in the same year they absorbed relocation costs. The elections below are what reverse it.
Which Elections Can Rescue a Dual-Status Year?
Three elections change the outcome of a transition year, and choosing among them is where most of the money is.
The First-Year Choice, IRC Section 7701(b)(4)
Arrive too late in the year to meet the substantial presence test and you are a nonresident for the entire arrival year by default. The first-year choice lets you elect residency for part of that year instead. Four conditions apply, and all four must be met:
- You were not a US resident for the calendar year immediately preceding the election year (IRC Section 7701(b)(4)(A)(ii)). A taxpayer who was already a resident last year cannot make the choice.
- You are present in the US for at least 31 consecutive days in the election year.
- You are present for at least 75% of the days from the first day of that 31-day period through December 31 (up to 5 days of absence in that window count as days of presence).
- You meet the substantial presence test in the following year.
The residency starting date under a first-year choice is its own rule and it is not the general rule stated earlier. Under IRC Section 7701(b)(4)(D) your residency begins on the first day of the 31-day period you used to qualify, not on your first day of presence in the calendar year. That distinction is the whole point for a late-arriving taxpayer: an unrelated business trip earlier in the year does not pull the starting date back.
Because next year's substantial presence test cannot be confirmed by the original due date, the election is usually made on a return extended with Form 4868. Note what it does and does not do: it creates a dual-status year, it does not make you a full-year resident.
The Section 6013(h) Election, Year of Arrival
IRC Section 6013(h) is an arrival-year provision, and only an arrival-year provision. It is available when you were a nonresident alien at the beginning of the tax year, a US resident at the close of that year, and married to a US citizen or resident alien at the close of the year. Meet all three and both spouses may elect to be treated as US residents for the entire tax year, converting the dual-status year into a full-year resident year and restoring married filing jointly, the joint rate brackets, and the joint standard deduction.
Note the direction carefully. A departing taxpayer is the exact inverse of this test: resident at the beginning of the year and nonresident at the close. Section 6013(h) is not available in a departure year, and a departing taxpayer who wants full-year joint treatment has to look to Section 6013(g) instead.
The Section 6013(g) Election, Ongoing
IRC Section 6013(g) treats a nonresident alien spouse as a US resident for the election year and all later years until revoked or terminated. It is the standing version of the same idea, covered in depth in our guide to the election to file jointly with a nonresident spouse.
The trade-off for both 6013 elections is the same, and it is not small: full-year resident treatment means worldwide income for the entire year, including foreign income earned before you ever set foot in the United States. The election pays when the deduction and bracket savings exceed the US tax on that pre-arrival income, which usually depends on whether the foreign tax credit or the foreign earned income exclusion can shelter it. It also pulls in a full year of resident information reporting, not just the post-arrival months.
What About the Year You Give Up a Green Card or Citizenship?
The year you expatriate is also a dual-status year: you are a resident through your expatriation date and a nonresident afterward, filed under the same return-plus-statement structure.
It carries a second regime on top of that. Two pieces are commonly collapsed into one and should not be. Form 8854 is required of every expatriate, meaning every citizen who relinquishes citizenship and every long-term resident who gives up a green card, whether or not they are covered. Filing it is precisely how you certify five years of tax compliance and thereby avoid being deemed a covered expatriate under IRC Section 877A(g)(1)(A). Skip it and you are treated as covered by default, regardless of your numbers.
Separately, if you actually are a covered expatriate, the mark-to-market exit tax under IRC Section 877A applies and the deemed sale is reported on that same Form 8854. That analysis runs independently of the dual-status filing mechanics, and we cover it in our Form 8854 and exit tax guide.
What Are the Most Common Dual-Status Filing Mistakes?
Four errors account for most of the dual-status returns that later need amending.
- Filing a full-year Form 1040 by default. Software will happily produce one, and it reports pre-arrival foreign income that was never subject to US tax. This is the most expensive error in an arrival year.
- Claiming the standard deduction. It is disallowed outside the India treaty exception, and it is easy for the IRS to spot.
- Omitting the statement or the labels. A return without the required attachment, or without the "Dual-Status Return" and "Dual-Status Statement" labels, is an incomplete filing.
- Assuming the residency date is the moving date. The starting date is generally your first day of presence in the calendar year, and the ending date defaults to December 31 unless the closer connection conditions are met. Neither is the date on the moving truck.
Bottom Line
A dual-status year is not a harder version of a normal return, it is a different return with its own form structure and its own restrictions. Fix the residency starting or ending date first, because everything else follows from it, then allocate income between the two periods, then decide whether an election under Section 7701(b)(4), 6013(g), or 6013(h) beats dual-status filing. For married taxpayers that election is often worth several thousand dollars, and it belongs on the original return rather than being reconstructed later.
Have questions about your dual-status alien tax return? Contact TS CPA for a free consultation. We respond within the same day.
Official IRS and Government Sources
- IRS, Taxation of Dual-Status Individuals
- IRS, Residency Starting and Ending Dates
- IRS Publication 519, U.S. Tax Guide for Aliens
- IRC Section 7701(b), Definition of Resident Alien and Nonresident Alien
- IRC Section 6013, Joint Returns of Income Tax by Husband and Wife
- IRC Section 877A, Expatriation Tax