Dual-status tax year: the year you arrive

Step 1 — Learn what “dual status” means

The IRS calls you a dual-status individual when your tax status changes during the year, from nonresident to resident or the reverse (IRS — Dual-status individuals). It’s about tax residency only, not citizenship (IRS — Taxation of dual-status individuals).

Whether you become a resident at all depends on the green card test and the substantial presence test, explained in our tax residency guide. If you’re a nonresident all year, you aren’t dual-status; students can start with taxes for international students.

Two sets of rules apply:

• The resident part: income from all sources is taxed, including foreign income you receive while a resident, even if you earned it earlier (IRS — Publication 519).
• The nonresident part: U.S.-source income and certain income connected with a U.S. trade or business are taxed; foreign income not connected with a U.S. trade or business isn’t taxed if you receive it while a nonresident (IRS — Publication 519).

Step 2 — Find your residency starting date

Your “residency starting date” splits the year: in your first year as a resident, you’re a nonresident before it and a resident from it on (IRS — Publication 519). The IRS rules:

• Green card test only: the first day in the calendar year that you’re in the U.S. as a lawful permanent resident; if you receive your green card abroad, your first day in the U.S. after you receive it (IRS — Residency starting and ending dates).
• Substantial presence test only: generally your first day in the U.S. that year; for an “exempt individual,” whose days don’t count for the test, it may be later than the arrival (IRS — Residency starting and ending dates).
• Both tests in the same year: the earlier of the two dates (IRS — Residency starting and ending dates).
• Resident last year too: you’re considered a resident from the beginning of this year (IRS — Residency starting and ending dates).

In some cases, up to 10 days in the U.S. can be left out when setting this date, with a signed statement; chapter 1 of Publication 519 explains the conditions (IRS — Publication 519).

Keep a list of the days you enter and leave; our I-94 guide explains your official entry record.

Step 3 — Match the return to your status on December 31

Your main form depends on your status on the last day of the tax year (IRS — Taxation of dual-status individuals):

• Resident on December 31: Form 1040 or 1040-SR, with a statement showing your income for the nonresident part; Form 1040-NR can serve as the statement (IRS — Publication 519).
• Nonresident on December 31: Form 1040-NR, with Form 1040 or 1040-SR as the statement for the resident part (IRS — Publication 519).

Labels. For 2025 returns, Publication 519 says to check the “Other” box at the top and write “Dual Status Return” on its line, and “Dual Status Stmt” on the statement (IRS — Publication 519). The 2025 Form 1040-NR instructions say to enter “Dual-Status Return” and “Dual-Status Statement” across the top (IRS — Instructions for Form 1040-NR).

The statement shows your name, address and taxpayer identification number, meaning a Social Security number or an ITIN (IRS — Publication 519), and you don’t sign the form you use as the statement (IRS — Instructions for Form 1040-NR). See our guides to the Social Security number and the ITIN.

Paper, not e-file, for 2025. Publication 519 says dual-status taxpayers can’t e-file for tax year 2025, and points to the dual-status mailing address in the form instructions (IRS — Publication 519). Check the labels and the e-file rule for your own tax year.

Step 4 — Know the limits of a dual-status return

The IRS lists these restrictions:

• No standard deduction, even for the resident part of the year (IRS — Instructions for Form 1040-NR); you can itemize allowable deductions (IRS — Publication 519).
• No head of household tax rates (IRS — Publication 519).
• No joint return, except through the full-year choice in Step 5 (IRS — Publication 519).
• Married filing separately rates if you’re married, a nonresident for part or all of the year and not filing jointly, with narrow exceptions (IRS — Publication 519).
• No earned income credit, credit for the elderly or disabled, or education credits, unless you make the full-year choice with your spouse (IRS — Publication 519). Other credits generally follow the resident rules, with limits (IRS — Publication 519).
• Tax treaties generally apply only to the nonresident part, with exceptions in chapter 9 of Publication 519 (IRS — Publication 519). 4Livo doesn’t interpret treaties.

Step 5 — Know the two choices the IRS describes

Both IRS elections below have conditions and lasting effects. 4Livo can’t say whether either fits you, so get qualified help before deciding.

Resident for the whole year (married couples). This choice is open if you were a nonresident at the start of the year, are a resident or citizen at the end, are married to a U.S. citizen or resident at year-end, and your spouse joins (IRS — Publication 519). Both spouses are then taxed on worldwide income for the whole year and file a joint return, the dual-status restrictions don’t apply, and neither of you can make this choice for a later year (IRS — Publication 519). It’s made by checking a box in the Filing Status section of Form 1040 and attaching a statement signed by both (IRS — 2025 Form 1040 instructions).

A related choice applies when one spouse is still a nonresident at year-end; the IRS calls it “a once-in-a-lifetime choice” (IRS — Nonresident spouse), and it may mean giving up treaty benefits (IRS — Instructions for Form 1040-NR). Both are in chapter 1 of Publication 519 (IRS — Publication 519).

The first-year choice. If you meet neither test in your arrival year or the year before (and didn’t use this choice then), but meet the substantial presence test the next year, you may be able to choose resident treatment for part of the arrival year, if certain tests are met (IRS — Dual-status individuals). You don’t have to be married (IRS — Publication 519). Publication 519, chapter 1, lists the conditions (IRS — Publication 519). Know that:

• you can’t file the return or the statement until you meet the test for the next year, and you can ask for more time with Form 4868 (IRS — First-year choice);
• if you don’t follow the procedures, you’re treated as a nonresident all year, with a narrow exception (IRS — First-year choice);
• once made, the choice can’t be revoked without IRS approval (IRS — First-year choice).

Step 6 — Mark your deadline and related reports

• Resident on December 31: generally April 15 of the next year (IRS — Publication 519).
• Nonresident on December 31: generally April 15 if you had wages subject to withholding, June 15 if you didn’t (IRS — Publication 519).
• Weekends and holidays: a date on a Saturday, Sunday or legal holiday moves to the next day that isn’t one (IRS — Publication 519).

Extensions and payments: see our first tax return guide. As a U.S. tax resident, you report worldwide income and may have to report certain foreign financial accounts (IRS — New immigrants); see our foreign bank accounts guide. For your state, see state income taxes.

Step 7 — Line up the right help early

Free volunteers. The IRS guide for VITA and TCE volunteers, revised in October 2026 for 2026 returns, says: “Dual status aliens are Out of Scope.” Out of scope means volunteers may not prepare that return (IRS — Publication 4012).

Paid help. Anyone with a Preparer Tax Identification Number (PTIN) can prepare returns for pay, but skills differ; the IRS directory lists preparers with IRS-recognized credentials (IRS — Choosing a tax professional). Only attorneys, certified public accountants (CPAs) and enrolled agents can represent you before the IRS in all matters (IRS — Topic 254). You remain accountable for everything on your return (IRS — Topic 254). Ask early whether a preparer handles dual-status returns.