F-1 / OPT FICA refund: getting wrongly-withheld Social Security and Medicare back

If Social Security or Medicare was taken out of your OPT paycheck, it should not have been. F-1 students who are nonresident aliens for tax purposes are exempt from FICA on their F-1-authorized work, and that includes both standard OPT and STEM OPT. The money is recoverable. This guide explains why you were exempt, how to read your pay stub to confirm the error, and the two-step process for getting the withholding back.

SimpleStub makes pay stubs. It does not file taxes or give legal advice. For your specific situation, confirm your residency status and consider a tax professional who works with international students.

Why are F-1 OPT students exempt from FICA?

F-1 students who are nonresident aliens (NRA) for tax purposes are exempt from Social Security and Medicare under IRC 3121(b)(19), on wages paid for work allowed by their F-1 status. Both the employee share and the employer match are exempt. OPT and STEM OPT count as F-1-authorized work, so neither you nor your employer owes FICA while the exemption applies.

The standard rates that are not deducted from your paycheck while you are exempt:

Income tax is a separate matter. Federal income tax and Massachusetts income tax are still withheld; the FICA exemption does not touch them.

Does the exemption follow the visa or the tax status?

It follows the tax status, not the OPT card. You are FICA-exempt as long as you are a nonresident alien for tax purposes. F-1 students are generally treated as NRA for their first five calendar years of presence in the US. After that window, the Substantial Presence Test can reclassify you as a resident alien, and FICA then applies like it would for any other employee. If you are in your sixth year or beyond, check your residency classification before assuming the exemption still holds.

How do you confirm FICA was withheld in error?

Look at the pay stubs from the affected pay periods. A correctly processed F-1 OPT stub has no Social Security line and no Medicare line. If you see either of those deductions taken out, the withholding was an error. Your W-2 is a second confirmation: boxes 3 and 4 (Social Security wages and tax withheld) and boxes 5 and 6 (Medicare wages and tax withheld) should all be blank while you are NRA. If those boxes have amounts in them, the employer either withheld FICA by mistake or treated you as a resident alien when you were not one.

Gather everything before you approach your employer or the IRS:

• All pay stubs from the affected periods showing the erroneous deductions.
• Your W-2 for the year.
• Visa documents establishing NRA status (I-20 with OPT endorsement, I-94, passport, EAD).

Step one: ask the employer to refund it

The IRS route for FICA withheld in error starts with the employer. Ask them to refund the employee share they withheld and to file a corrected return (Form 941-X) to recover the employer portion. If they correct it, they should also issue a corrected W-2 (a W-2c) with boxes 3 through 6 cleared and box 1 wages unchanged.

Do this in writing and keep the response. If the employer agrees and refunds you, the matter is closed on your end.

Step two: claim directly from the IRS if the employer cannot help

If the employer is unable or unwilling to refund the withholding, you have a direct path to the IRS. File Form 843 (Claim for Refund and Request for Abatement) and attach Form 8316 (Information Regarding Request for Refund of Social Security Tax Erroneously Withheld on Wages Received by a Nonresident Alien on an F, J, or M Type Visa). Send both to the IRS service center that handles your return.

Form 8316 asks you to certify the amount withheld and explain the basis for the exemption. Your pay stubs and W-2 supply the numbers; your visa documents support the NRA status. The IRS publishes this process specifically for international students in this situation.

You cannot claim the FICA refund through your regular income-tax return (Form 1040-NR). The Form 843 / 8316 path is the correct one.

What your corrected W-2 and stub should look like

After a correction, the pay stubs for affected periods should show no Social Security or Medicare deductions. If SimpleStub generated the original stubs, you can regenerate them without those lines once you confirm the exemption applies. The corrected W-2 should look like this:

Wages in box 1 are unaffected. The correction removes only the FICA figures.

What about future paychecks?

Once you have confirmed the error with your employer and they have updated their payroll setup, future pay stubs should have no Social Security or Medicare lines for as long as you remain a nonresident alien. Give your employer a copy of your I-20, I-94, and EAD at each new job so they can document the exemption from the first paycheck forward. If you move into a new calendar year past your fifth year of presence, revisit the Substantial Presence Test before assuming the exemption continues.