- F-1 students on OPT or CPT must file federal tax returns by the April 15, 2027 deadline.
- Eligible international students should claim FICA tax exemptions to avoid losing approximately 7.65% of their total income.
- Taxpayers with foreign accounts over $10,000 must submit FBAR filings to prevent severe non-compliance penalties.
(UNITED STATES) — F-1 students on OPT or CPT who qualify for the FICA exemption should prepare now for key 2027 tax deadlines, especially if Social Security and Medicare taxes were withheld in error during tax year 2026.
For tax year 2026, filed in 2027, the main date is April 15, 2027. That is the due date for most individual federal returns and for FBAR filings. For many international students, the bigger issue is not just filing on time. It is making sure payroll taxes were handled correctly.
Under IRC Section 3121(b)(19), students in F-1, J-1, M-1, and Q status are generally exempt from Social Security and Medicare taxes, often called FICA, while they are nonresident aliens for tax purposes. IRS guidance updated February 19, 2026 confirms that rule. See IRS Publication 519, U.S. Tax Guide for Aliens, and the IRS international taxpayers page.
For most F-1 students, that nonresident status applies during the first five calendar years in the United States. During that period, the FICA exemption usually applies to:
- On-campus employment
- CPT
- OPT
- STEM OPT extensions
The work must be authorized and tied to the visa’s purpose.
📅 Deadline Alert: If your employer withheld FICA during 2026 and will not fix it, start the refund process before you file your 2026 return in 2027. Late action can delay your refund claim.
2027 deadline summary for tax year 2026
| Tax event | Deadline | Extension available |
|---|---|---|
| Form W-2 from employer | January 31, 2027 | No general employee extension |
| Federal income tax return, usually Form 1040-NR for nonresidents | April 15, 2027 | Form 4868 to October 15, 2027 |
| FBAR, FinCEN Form 114, if foreign accounts exceeded $10,000 aggregate | April 15, 2027 | Automatic to October 15, 2027 |
| Form 8843, if required and no income was earned | June 15, 2027 | Limited; file as soon as possible if late |
Why this matters for OPT and CPT workers
If you are still a nonresident alien, your employer should not withhold the employee share of Social Security and Medicare tax. That combined rate is 7.65%.
On $60,000 of wages, that equals about $4,590 for the year.
If you were on OPT or CPT and FICA was taken from your paycheck, the first step is to ask your employer for a correction. Payroll can often reverse the error and issue Form W-2c.
If the employer refuses or cannot refund the tax, file directly with the IRS using:
- Form 843, Claim for Refund and Request for Abatement
- Form 8316, Information Regarding Request for Refund of Social Security Tax Erroneously Withheld
Attach copies of:
- Form W-2
- Form I-94
- Passport identity page and visa page
- Form I-20 and, if applicable, EAD
- Employer refusal statement, or your own statement if none was provided
Readers checking tax documents early can avoid missing records needed for a refund claim.
⚠️ Warning: Filing as a resident alien when you are actually a nonresident can create serious tax and immigration problems. Review Publication 519 before filing.
What happens if you miss the deadline
Missing the tax return deadline can trigger:
- Failure-to-file penalties
- Failure-to-pay penalties
- Interest on unpaid tax
If you miss an FBAR filing, penalties can be severe. A non-willful penalty can reach $10,000 per account per year. Willful penalties can be much higher.
For students, there is another risk. Tax filing errors can create compliance problems. That matters for future immigration filings, status maintenance, and document requests. Those preparing OPT records should keep copies of all returns, W-2s, 1042-S forms, and refund claims.
2025–2026 USCIS and DHS updates to watch
Tax rules did not change the basic FICA exemption as of April 1, 2026. Still, several related developments matter:
- The premium processing fee for Form I-765 rose from $1,685 to $1,780 on March 1, 2026
- USCIS increased scrutiny of fraudulent employers, and reported revoking more than 1,100 OPT work permits in a 2025 review
- The proposed OPT Fair Tax Act (S. 2940) would remove the FICA exemption for OPT participants, but it is not law
USCIS also signaled tighter enforcement of the 60-day STEM OPT filing window. A late filing can put work authorization at risk.
Special circumstances and disaster relief
The IRS sometimes extends deadlines for taxpayers affected by federally declared disasters. If you live in an affected area in 2027, check IRS.gov/newsroom and the disaster relief page before assuming the standard due date applies.
What to do now
Before year-end 2026 and again in early 2027:
- Confirm whether you are a nonresident alien under the five-calendar-year rule
- Review pay stubs for Social Security and Medicare withholding
- Ask payroll for a correction quickly if FICA was withheld
- Keep your I-20, EAD, passport, I-94, and W-2
- Review IRS Publication 519, Form 843 instructions, USCIS OPT for F-1 Students, and DHS Study in the States tax guidance
- If you hold foreign accounts, check whether you must file an FBAR
Students who changed status during 2026, or who may be dual-status taxpayers, should get professional help before filing. That is especially true if you moved from F-1 to H-1B, claimed a treaty benefit, or spent enough days in the U.S. to become a resident under the substantial presence test.
Current as of April 1, 2026.
⚠️ Disclaimer: This article is for informational purposes only and does not constitute tax, legal, or financial advice. Tax situations vary based on individual circumstances. Consult a qualified tax professional or CPA for guidance specific to your situation.
