Tax Implications of Changing Immigration Status

How Does a Status Change Affect Your Taxes?

When your immigration status changes during the year, the IRS may tax you differently for the two periods. The key question is whether you moved from nonresident alien to resident alien (or vice versa) - because these two categories have fundamentally different tax rules. Nonresident aliens pay tax only on US-source income; resident aliens pay tax on worldwide income.

F-1 Student to H-1B

The Most Common Status Change for Expats

This is one of the most common transitions and one of the most tax-complex. F-1 students are considered exempt individuals for purposes of the Substantial Presence Test (SPT) - meaning years on F-1 do not count toward the SPT, and most F-1 students are nonresident aliens.

When you transition to H-1B (typically October 1 of the cap year), you begin counting days for the SPT. Because H-1B holders are not exempt, you may pass the SPT partway through the H-1B year, making that a dual-status year.

Key changes when moving from F-1 to H-1B:

• FICA taxes begin on the first day of H-1B status (F-1 OPT is FICA-exempt if you are a nonresident)
• You begin counting SPT days
• Your home country income may become taxable once you become a resident alien
• You transition from Form 1040-NR to Form 1040

OPT to H-1B: A Special Case

Students on F-1 OPT (Optional Practical Training) are in F-1 status, so the FICA exemption applies as long as they remain nonresident aliens. When OPT ends and H-1B begins, FICA withholding must start. If your employer did not adjust withholding at the right time, you may owe back FICA or be entitled to a refund.

OPT STEM extension holders should be especially careful: the transition date matters for both FICA and the SPT day count.

B Visa to Green Card (Adjustment of Status)

When you adjust status to Lawful Permanent Resident (green card holder) mid-year, you become a resident alien from the date of your green card approval (or earlier if the first-year choice applies). This creates a dual-status year in most cases.

From that date forward:

• You are taxed on worldwide income
• FICA applies to all wages
• You may need to report foreign bank accounts via FBAR and FATCA
• Your foreign income that was previously excluded may now be taxable

J-1 to Green Card or H-1B

J-1 exchange visitors are generally exempt from the SPT for 2 years. When transitioning to H-1B or adjusting status to green card, the exemption ends and days begin to count toward the SPT. The date of status change determines when your tax treatment shifts.

How Mid-Year Changes Affect Your FICA Obligations

What Forms Do You File?

When a status change creates a dual-status year, you typically need:

1. Form 1040 - For the resident alien period, covering worldwide income
2. Form 1040-NR - Attached as a statement for the nonresident period
3. Form 8843 - If you were an exempt individual (F-1, J-1) for any part of the year
4. FinCEN 114 (FBAR) - If you had foreign accounts exceeding $10,000 at any point during the year

Totalization Agreements: Avoiding Double FICA

The US has totalization agreements with 30+ countries (including Brazil) that prevent double Social Security taxation. If you paid into your home country's social security system during the year and then transitioned to H-1B, you may be exempt from US Social Security tax for a period. Your employer needs a Certificate of Coverage from your home country's social security authority.

---

Status changes create some of the most complex tax situations for immigrants. The right forms, elections, and positions depend on your exact dates and income. Get Your Personalized Form List to get a clear picture of what applies to you.