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Tax year 2026Checked

F-1 to H-1B and married: can a joint return lower your 2026 tax?

The IRS choices behind a joint 2026 Form 1040 after an H-1B start, how a start by July 2 or on October 1 changes the route, and an example where the joint return costs $8,072 less.

$32,200 standard deduction on a joint 2026 Form 1040; a married dual-status or Form 1040-NR return generally gets none

By F1TaxReturn Tax Team. Published . Facts checked against the sources below on . 7 minute read.

In short

  1. A married couple who changed from F-1 and F-2 to H-1B and H-4 in 2026 can choose to be treated as US residents for all of 2026, if one of them is a resident on December 31, and file one joint Form 1040 with a $32,200 standard deduction.
  2. Without a choice, a married nonresident or dual-status filer generally gets no standard deduction and pays tax at the married-filing-separately rates.
  3. If all your earlier days in the US were exempt F-1 days, an H-1B start on or before July 2, 2026 makes you a resident from that date if you are here at least 183 days from then to December 31; a later start, such as October 1, needs the first-year choice before the joint choice.
  4. After an October 1 start you cannot file the joint return until you meet the 2027 substantial presence test (153 days in the US in 2027 if you were here all 92 days from October 1), so file Form 4868 by Thursday, April 15, 2027 and pay the tax figured as a nonresident.
  5. In our example, $90,000 of 2026 pay costs $14,512 in federal income tax on Form 1040-NR and $6,440 on a joint Form 1040, which is $8,072 less, before any income from abroad.
Contents, 8 sections

A joint return often lowers the 2026 tax of a married student whose H-1B started in 2026. Suppose you and your spouse moved from F-1 and F-2 to H-1B and H-4, and one of you is a US resident on December 31, 2026. You can then both choose to be treated as US residents for all of 2026 (Publication 519) and file one Form 1040 with the $32,200 joint standard deduction (Rev. Proc. 2025-32).

A married nonresident or dual-status filer who makes no choice generally gets no standard deduction and pays at the married-filing-separately rates. For the basics, see the guide to US taxes for international students. If your spouse is a US citizen, see married to a US citizen on F-1. If your spouse lives abroad, the same two routes apply, and H-1B with a spouse abroad covers their ITIN and income from abroad on the joint return.

Note

Publication 519 for 2026 is not yet published. The rules below come from the 2025 edition and the IRS pages linked.

How do we get to a joint return after an H-1B start?

Your H-1B start date decides whether you need one IRS choice or two. If your earlier days were exempt, a start by July 2, 2026 plus 183 days here makes you a resident; a later start first needs the first-year choice.

Decision chart: the route to a joint 2026 Form 1040 after an H-1B start by July 2, or a later one such as October 1.A decision chart for a married F-1 student whose H-1B status started in 2026, inside the five exempt years, with a spouse on F-2 and then H-4. When did your H-1B status start? On or before July 2, 2026: if you stay in the US, you have 183 or more counted days and are a resident from your start date, so 2026 is a dual-status year. Both of you then choose resident status for all of 2026 and file a joint Form 1040 with a $32,200 standard deduction, due Thursday, April 15, 2027. Later, for example October 1: you have 92 counted days and are a nonresident all year. The first-year choice makes you a resident from October 1 if you were in the US every day from October 1 to 31 and at least 69 of the 92 days. 2026 is then a dual-status year, both of you choose resident status, and you file a joint Form 1040 with a $32,200 standard deduction after you meet the 2027 test (153 days in the US in 2027 if you were here all 92 days from October 1), on a Form 4868 extension to October 15, 2027. If you make no choice, you generally use married-filing-separately rates with no standard deduction: a dual-status return after a start by July 2, or Form 1040-NR after a later start.F-1 to H-1B and married: which 2026 return?Inside your five exempt years, with a spouse on F-2, then H-4When did your H-1B statusstart in 2026?On or before July 2Later, for example October 1183 or more counted daysif you stay: resident from yourstart date, a dual-status yearBoth of you choose residentstatus for all of 2026Joint Form 1040Standard deduction$32,200Due Thursday, April 15, 202792 counted days:nonresident all yearFirst-year choice:resident from October 1 if youwere in the US October 1 to 31and 69 of the 92 daysNow dual-status: both of youchoose resident statusfor all of 2026Joint Form 1040Standard deduction$32,200After the 2027 test (153 days ifyou were here all 92), onForm 4868 to October 15, 2027No choice: married-filing-separately rates,generally no standard deductionOn or before July 2: a dual-status return. Later: Form 1040-NR.Decision chart: the route to a joint 2026 Form 1040 after an H-1B start by July 2, or a later one such as October 1.A decision chart for a married F-1 student whose H-1B status started in 2026, inside the five exempt years, with a spouse on F-2 and then H-4. When did your H-1B status start? On or before July 2, 2026: if you stay in the US, you have 183 or more counted days and are a resident from your start date, so 2026 is a dual-status year. Both of you then choose resident status for all of 2026 and file a joint Form 1040 with a $32,200 standard deduction, due Thursday, April 15, 2027. Later, for example October 1: you have 92 counted days and are a nonresident all year. The first-year choice makes you a resident from October 1 if you were in the US every day from October 1 to 31 and at least 69 of the 92 days. 2026 is then a dual-status year, both of you choose resident status, and you file a joint Form 1040 with a $32,200 standard deduction after you meet the 2027 test (153 days in the US in 2027 if you were here all 92 days from October 1), on a Form 4868 extension to October 15, 2027. If you make no choice, you generally use married-filing-separately rates with no standard deduction: a dual-status return after a start by July 2, or Form 1040-NR after a later start.F-1 to H-1B and married:which 2026 return?Inside your five exempt years,with a spouse on F-2, then H-4When did your H-1B statusstart in 2026?On or before July 2183 or more counted daysif you stay: resident from yourstart date, a dual-status yearBoth of you choose residentstatus for all of 2026Joint Form 1040Standard deduction$32,200Due Thursday, April 15, 2027Later, for example October 192 counted days:nonresident all yearFirst-year choice:resident from October 1 if youwere in the US October 1 to 31and 69 of the 92 daysNow dual-status: both of youchoose resident statusfor all of 2026Joint Form 1040Standard deduction$32,200After the 2027 test (153 daysif you were here all 92), onForm 4868 to October 15, 2027No choice, either dateMarried-filing-separately rates,generally no standard deduction.On or before July 2:a dual-status return.Later: Form 1040-NR.
Your H-1B start date decides the route to a joint 2026 Form 1040.

If all your earlier days were exempt F-1 days, your count starts on your H-1B start date, and July 2 to December 31, 2026 is exactly 183 days. With 183 or more counted days by December 31, a start by then makes 2026 a dual-status year: part nonresident, part resident (F-1 to H-1B guide). If your OPT ended before your H-1B started, read that guide's warning about cap-gap days first.

An October 1 start gives 92 counted days: nonresident for all of 2026, unless you make the first-year choice. It makes you a resident from October 1 if you were here all of October and at least 69 of the 92 days (75%). Up to 5 days abroad can count toward the 69. You must also meet the substantial presence test for 2027.

Publication 519 then lets you both choose resident status for the whole year. Either way, one of you must be a US resident on December 31, 2026, and your spouse must join the choice.

Key facts

Standard deduction on a joint 2026 Form 1040
$32,200; generally none on a married Form 1040-NR or dual-status return
Latest H-1B start that makes you a resident by the 183-day test
July 2, 2026, if your earlier days were exempt and you stay in the US
First-year choice after an October 1, 2026 start
In the US October 1 to 31 and at least 69 of the 92 days (up to 5 days abroad can count), then the 2027 test (153 days if you were here all 92); resident from October 1
When you can file the joint return after an October 1 start
After the 2027 test (153 days in 2027 if you were here all 92): Wednesday, June 2, 2027 at the earliest
Extension for the joint return after an October 1 start
Form 4868 by Thursday, April 15, 2027, to Friday, October 15, 2027
For
Married F-1 students, including students on OPT, whose H-1B status started in 2026 while 2026 was one of their five exempt calendar years, with a spouse in the US on F-2 and then H-4.
Not for
Single students, students in their sixth calendar year or later, and couples where one spouse is a US citizen.

How much less tax could a joint return mean?

In our example, a joint return cuts a couple's 2026 federal income tax from $14,512 to $6,440, which is $8,072 less. The saving comes from the $32,200 joint standard deduction and the joint brackets: 10% runs to $24,800 instead of $12,400, and 12% to $100,800 instead of $50,400.

Worked example: Linh and Bao, H-1B and H-4 from October 1, 2026

Linh, an illustrative F-1 student, arrived with their spouse Bao in August 2022, so 2026 is the fifth exempt year for both. Linh earned $60,000 on OPT in Texas from January 1 to September 30, 2026, then $30,000 on H-1B. Bao changed from F-2 to H-4 on October 1, with no income. Both were in the US all year, with no foreign income and no treaty benefit.

A: no choice B: first-year choice, then joint
Form and filing status Form 1040-NR, married filing separately Form 1040, married filing jointly
Standard deduction $0 $32,200
Taxable income $90,000 $57,800
Federal income tax $14,512 $6,440
When they can file By Thursday, April 15, 2027 After 153 days in the US in 2027; extended to Friday, October 15, 2027
What they give up Nothing extra Worldwide income is taxed; treaty benefits are generally lost; Bao is a nonresident on December 31, so the choice continues into later years

A: $5,800 + 22% of ($90,000 minus $50,400) = $5,800 + $8,712 = $14,512. B: $90,000 minus $32,200 = $57,800, then $2,480 + 12% of ($57,800 minus $24,800) = $2,480 + $3,960 = $6,440. The difference is $14,512 minus $6,440 = $8,072. Rates from Rev. Proc. 2025-32; the IRS Tax Table can differ by a few dollars.

Social Security and Medicare tax is the same under both: $30,000 of H-1B pay times 7.65% = $2,295. Texas has no state income tax.

A June start with the same pay gives the same income tax figures, since a married dual-status return is taxed like option A (Publication 519). Income from abroad, or India's treaty standard deduction on Form 1040-NR, could shrink the gap.

What do we give up by filing jointly?

Both of you are taxed on worldwide income for all of 2026 (Publication 519). Neither of you can generally use a tax treaty as a resident of another country (IRS).

What else the joint choice changes or leaves alone
On a joint 2026 return
Later years 2026 only if both of you are residents on December 31. Otherwise it continues, with joint or separate returns allowed, until suspended or ended; once ended, neither of you can make it again (Form 1040 instructions, IRS)
First-year choice Cannot be revoked without IRS approval (IRS)
Social Security and Medicare Unchanged: the choice is "for income tax purposes"
FBAR The first-year choice counts as residency; the joint choice alone does not (IRM 4.26.16, FBAR guide)

When can we file if my H-1B started on October 1?

You cannot file the joint return until you meet the 2027 substantial presence test: 153 days here in 2027 if you were here all 92 days from October 1. If you are here every day from January 1, that is Wednesday, June 2, 2027.

The test counts a third of your 92 counted 2026 days: 183 minus 30.67 = 152.33, so 153 days (IRS). With only 69 days in 2026, you need 160. A spouse who makes their own first-year choice must meet it too.

File Form 4868 by Thursday, April 15, 2027 to move your filing date to Friday, October 15, 2027 (IRS). Publication 519 says to pay with it the tax "figured as if you were a nonresident alien the entire year". For Linh and Bao, that is $14,512 minus the tax withheld, so their joint return later shows $8,072 overpaid.

What does my H-4 spouse need for the joint return?

Your spouse needs an SSN or an ITIN, and both of you sign the joint-choice statement. A spouse without permission to work generally cannot get an SSN (SSA), so they apply for an ITIN with the return.

  1. Your spouse fills in Form W-7, box e, "Spouse of U.S. citizen/resident alien". Attach it to the front of the joint return and leave their SSN space blank (ITIN guide). Mail both, with your spouse's passport or a copy certified by the issuing agency, to Internal Revenue Service, ITIN Operation, P.O. Box 149342, Austin, TX 78714-9342 (W-7 instructions). Do not use the usual Form 1040 address.
  2. Sign the joint-choice statement together. If you are both residents on December 31, it declares that you both qualify. If your spouse is still a nonresident then, as Bao is, it declares that one of you was a nonresident and the other a resident on that day. Either way it says you choose resident status for all of 2026 and gives each spouse's name, address and SSN or ITIN (Publication 519).
  3. On the 2026 draft Form 1040, check the box for treating "a nonresident alien or dual-status alien spouse as a U.S. resident for the entire tax year". Enter both your names if you are both residents on December 31, or your spouse's name if not (Form 1040 instructions). Do not check line 12c, "You were a dual-status alien".
  4. After an October start, also attach the first-year choice statement, with your dates in the US.
  5. Each of you includes a Form 8843 for your 2026 F-1 or F-2 days with the joint return, to exclude those days from the count (IRS).

What to do next

  1. Find your H-1B start date on your Form I-797 approval notice and count both spouses' 2026 days.
  2. Ask a preparer who handles dual-status returns to compare both options with all your income. F1TaxReturn prepares Form 1040-NR and Form 8843 for single filers only, so it cannot prepare a joint, married or dual-status return.
  3. After a start by July 2, file the joint return by Thursday, April 15, 2027. After an October start, extend with Form 4868 and pay by Thursday, April 15, 2027. File the joint return once you meet the 2027 test, by Friday, October 15, 2027. Either way, include a Form 8843 for each of you.
  4. If you make no choice after an October start, file Form 1040-NR and Form 8843 by Thursday, April 15, 2027. Your spouse files Form 8843 by Tuesday, June 15, 2027 (F-2 guide). After a start by July 2, see the dual-status guide.

Questions students ask

Can an F-1 student and an F-2 spouse file jointly if neither changes status in 2026?

Not while both of you are nonresidents all year. A joint return needs one spouse to be a US citizen or resident at the end of the year. Each of you files separately: Form 1040-NR if you had taxable US income, and a Form 8843 for each of you.

My H-4 spouse has no SSN. How do they get an ITIN for our joint return?

A spouse without permission to work generally cannot get an SSN, so they apply for an ITIN on Form W-7 and check box e, spouse of a US citizen or resident alien. Attach the W-7 to the front of your joint return and leave your spouse's SSN space blank. Mail them with your spouse's passport, or a copy certified by the issuing agency, to the IRS ITIN Operation in Austin. It assigns the ITIN, then processes the return.

Do we lose our tax treaty benefits if we file jointly?

Generally, yes, for the years the choice covers. Publication 519 says neither spouse can claim under a treaty not to be a US resident, and the IRS says treaty benefits as a resident of another country are generally lost. A treaty's exception to the saving clause might still keep a benefit on certain income, so check yours with a preparer.

Does the joint choice carry into 2027?

That depends on your spouse's status on December 31, 2026. If both of you are residents then, the choice covers 2026 only, and neither of you can make it for a later year. If your spouse is still a nonresident, the choice continues into later years until it is suspended or ended, though you may file joint or separate returns in those years; once it ends, neither of you can make it again.

Do we need to file an FBAR or Form 8938 for 2026?

Possibly. The IRS manual counts the 183-day test and the first-year choice as residency for the FBAR, but not the joint choice on its own; a US person files one if their foreign accounts together were worth more than $10,000 at any time in the year. Form 8938 is a separate form, and for a married couple filing jointly and living in the US it applies above $100,000 of specified foreign assets on December 31 or $150,000 at any time. Ask your preparer whether either applies to you.

Sources

This guide is checked against these 13 documents, most recently on .

  1. Publication 519 (2025), U.S. Tax Guide for Aliens, IRS
  2. Nonresident spouse, IRS
  3. Tax residency status: first-year choice, IRS
  4. Taxation of dual-status individuals, IRS
  5. Substantial presence test, IRS
  6. Revenue Procedure 2025-32 (2026 inflation adjustments), IRS
  7. Instructions for Form 1040 (2025), IRS
  8. Form 1040 (2026 draft), IRS
  9. Instructions for Form W-7 (Rev. December 2024), IRS
  10. About Form 4868, Application for Automatic Extension of Time to File, IRS
  11. Internal Revenue Manual 4.26.16, Report of Foreign Bank and Financial Accounts (FBAR), IRS
  12. Comparison of Form 8938 and FBAR requirements, IRS
  13. International Students and Social Security Numbers, Social Security Administration