F1 and OPT Student Tax Filing Guide 2026

Filing US taxes as an F1 student or OPT worker is more complicated than most people realize. You file a different form than US citizens, you may be exempt from certain taxes, and you have treaty benefits available that most tax software like TurboTax does not handle correctly. This guide covers everything F1 and OPT students need to know for 2026.

Am I a Nonresident Alien as an F1 Student?

F1 visa holders are exempt from the Substantial Presence Test for the first 5 calendar years in the US. This means:

• Years 1–5 in the US on F1: You are a nonresident alien → file Form 1040-NR
• Year 6+ on F1 (rare, only for very long PhD programs): Apply the SPT normally
• OPT after F1: OPT is still counted under the F1 exempt period (5 years total)
• After F1/OPT if you switch to H1B: You become a resident alien — different rules apply

What Tax Forms F1/OPT Students File

Form 8843 — The Overlooked Requirement

This is the most missed form for F1 students. Every F1 and J1 visa holder must file Form 8843 for every year they are in the US — even if they had zero income. Form 8843 tells the IRS you are an exempt individual who should not be counted under the Substantial Presence Test.

If you did not file Form 8843 in prior years, you may need to file late 8843s to protect your nonresident alien status. Bluewings Tax handles this.

FICA Tax Exemption for F1/OPT Students

This is one of the biggest tax benefits for F1 students that most employers get wrong:

• F1 students working on-campus or on OPT are exempt from Social Security (6.2%) and Medicare (1.45%) taxes
• This exemption applies for the duration of the F1/OPT period (5 years)
• Many employers incorrectly withhold FICA taxes from F1/OPT workers
• If FICA was wrongly withheld, you can claim a refund on your tax return
• If your employer won’t correct it, file Form 843 and Form 8316 to claim the refund directly from the IRS

US-India Tax Treaty Benefits for F1 Students

Under Article 21 of the US-India Tax Treaty, Indian students on F1 visas may be eligible for treaty benefits on certain income — particularly scholarship, fellowship, and grant income. Additionally, Article 22 provides exemption for certain wages earned by students during their studies.

However, treaty benefits for F1 students are complex and fact-specific. Bluewings Tax reviews your situation to determine whether treaty benefits apply and claims them correctly on Form 1040-NR.

OPT Tax Filing — Special Considerations

• Income is taxable: OPT wages are subject to federal and state income tax
• FICA exemption continues: Even on OPT, you remain FICA-exempt for the F1 exempt period
• STEM OPT extension: The FICA exemption continues during STEM OPT
• CPT income: Also taxable — report on Form 1040-NR
• Fellowships and stipends: May or may not be taxable depending on the source and purpose

Do F1 Students Need an SSN or ITIN?

• SSN: Available if you have employment authorization (OPT, on-campus work, CPT). Apply through your university’s international office.
• ITIN: If you need to file a return but are not eligible for an SSN (e.g., scholarship income only), apply for an ITIN using Form W-7. Bluewings Tax assists with ITIN applications — $99.99.

Common F1 Tax Mistakes

• Using TurboTax or H&R Block (these do not properly handle Form 1040-NR)
• Filing Form 1040 instead of Form 1040-NR
• Not filing Form 8843 in years with no income
• Not claiming FICA refund when employer wrongly withheld
• Not claiming treaty benefits available to Indian students
• Not getting an ITIN when needed