F-1 Student Tax Filing Guide 2025: OPT, Treaty Benefits, and What You Need to Know
Complete guide for F-1 students and OPT workers filing US taxes in 2025. Covers nonresident alien status, Form 1040-NR and Form 8843, India treaty benefits, FICA exemption, scholarship taxation, OPT/STEM OPT rules, FBAR obligations, and the F-1 to H-1B transition.
Yes. If you earned any US-source income during 2025 — wages from on-campus work, OPT employment, CPT, teaching or research assistantships, or taxable scholarship income — you must file a federal tax return.
Even if you had zero income, you are still required to file Form 8843 (Statement for Exempt Individuals). This applies to every F-1 student, every year, including F-2 dependents.
Most F-1 students are nonresident aliens (NRAs) during their first five calendar years. Under IRC Section 7701(b)(5)(D), F-1 holders are "exempt individuals" — days do not count toward the Substantial Presence Test for up to 5 calendar years.
- Clock runs on calendar years, not academic years
- Partial calendar year counts as a full year
- 5-year count is lifetime aggregate
- OPT/STEM OPT does not reset the clock
| Calendar Year | Example (arrived Aug 2021) | Status |
|---|---|---|
| 2021 (Year 1) | Partial year | NRA — exempt |
| 2022-2025 (Years 2-5) | Full years | NRA — exempt |
| 2026 (Year 6) | Days count toward SPT | Tax status does not automatically change in Year 6; you become a resident alien only if you meet the Substantial Presence Test (often after switching from F-1 to H-1B). |
Year 6: File Form 1040, report worldwide income, claim standard deduction, pay FICA, FBAR/FATCA obligations begin.
Primary return: Form 1040-NR (not Form 1040).
Required Forms:
| Form | Who Files | When |
|---|---|---|
| Form 8843 | ALL F-1/F-2, even with no income | By April 15 |
| Form 1040-NR | F-1 with any US-source income | By April 15 |
| Form 8233 | Given to employer for treaty exemption | Before receiving wages |
| Form W-8BEN | Given to US banks | When opening account |
| State return | If earned income in a tax state | Varies |
Forms You Receive:
| Form | From | Reports |
|---|---|---|
| W-2 | Employer | Wages + tax withholding |
| 1042-S | University/employer/broker | Fellowship, treaty-exempt income, NRA withholding |
| 1099-INT | US bank | Interest income (usually NRA-exempt) |
| 1099-B | Brokerage | Stock sale proceeds/capital gains |
Indian citizens on F-1 get below key benefit under Article 21:
Benefit: Standard Deduction (Article 21(3)) — Indian students can claim $15,750 (2025, single) even though NRAs normally cannot. Specific to India and a few other treaty countries.
Combined Example ($25,000 OPT income):
| Item | Amount |
|---|---|
| Gross wages | $25,000 |
| Standard deduction | -$15,750 |
| Taxable income | $9,250 |
| Federal tax (10%) | ~$925 |
Expiration: Benefits end when you become a resident alien, switch to H-1B, or presence is no longer primarily for education.
During the exempt period (up to 5 years), F-1 students are exempt from FICA — saving 7.65% of wages.
| Tax | Rate | F-1 (Years 1-5) | F-1 (Year 6+) |
|---|---|---|---|
| Social Security | 6.2% | Exempt | Must pay |
| Medicare | 1.45% | Exempt | Must pay |
Applies to all F-1 employment: on-campus, CPT, OPT, STEM OPT.
Employer Incorrectly Withheld FICA?
- Ask employer to refund via Form 941-X
- If they can't: file Form 843 + Form 8316 with W-2, visa, I-20, passport
- Deadline: 3 years from filing date
| Component | Taxable? | Why |
|---|---|---|
| Tuition and required fees | No | IRC §117(b) |
| Required books/supplies | No | IRC §117(b) |
| Room and board | Yes | Not qualified expense |
| Living stipends | Yes | Not qualified expense |
| TA/RA stipends for services | Yes | IRC §117(c) |
Reported on Form 1042-S. Taxable portion: 14% withholding (unless treaty-reduced).
Payments from India: Scholarships/family support from outside the US are generally exempt under Article 21(2)(a). Gifts from Indian family exceeding $100,000/year require Form 3520 — penalty for non-filing is 35% of the gift amount.
Tax status does not change on OPT — still F-1, still NRA (within 5-year window), still FICA-exempt.
Standard OPT (12 months): W-2 wages, Form 1040-NR, FICA exempt, treaty exemption available, Form 8843 required.
STEM OPT (24 months): Total 36 months possible. Identical tax treatment. Employer must be E-Verify.
Critical: The 5-year clock keeps running. Student arriving 2021 on STEM OPT in 2026 has exhausted the window — days count toward SPT, FICA applies, likely becomes resident alien.
NRA Period (Years 1-5): Generally No
FBAR is for US persons only. NRA F-1 students are not required to file FBAR or FATCA.
Resident Alien (Year 6+): Yes
- FBAR required if foreign accounts exceed $10,000 aggregate
- FATCA (Form 8938) if assets exceed $50,000 year-end (single)
- NRE interest is US-taxable
- Claim Foreign Tax Credit (Form 1116) for NRO TDS
Common Scenario: OPT (Jan-Sep), H-1B (Oct-Dec)
| Factor | OPT Period | H-1B Period |
|---|---|---|
| FICA | Exempt (if within 5 years) | Must pay |
| Treaty benefits | Available | Not available |
| Standard deduction | Available (India treaty) | Available (as resident) |
Residency: If 5-year window not expired, OPT days don't count — likely NRA for full year (Form 1040-NR). If expired, may need dual-status return.
Documents:
- Form 8843 (one per F-1/F-2 family member)
- W-2 from employer
- 1042-S from university
- I-20 showing program dates
- Passport with entry stamps
- SSN or ITIN (Form W-7 if needed)
- Prior year return
- India bank statements (Year 6+ only, for FBAR)
- Form 8233 copy
Deadlines:
| Deadline | Due |
|---|---|
| April 15, 2026 | Form 1040-NR, Form 8843, state returns |
| April 15, 2026 | Form 843 (FICA refund, if applicable) |
| June 15, 2026 | Form 8843 if no income |
Do F-1 students pay Social Security/Medicare?
No — not during first 5 calendar years. FICA exemption under IRC §3121(b)(19).
Is scholarship income taxable?
Tuition/fees: no. Room, board, stipends: yes. Indian students can apply for treaty exemption.
When do F-1 students become resident aliens?
After the 5-year exempt window expires and you meet the 183-day SPT.
Do F-1 OPT students need FBAR?
Not during NRA period. Yes after becoming resident alien if foreign accounts exceed $10,000.
Can I recover incorrectly withheld FICA?
Yes. Request from employer or file Form 843 + Form 8316. 3-year deadline.