Employers deduct Social Security and Medicare taxes from the international students paychecks. International students, nonresident aliens for tax purposes, are not subject to Social Security and Medicare taxes also known as FICA taxes.
If you are an international student on Optional Practical Training - OPT, nonresident alien for tax purposes, and your employer has deducted Social Security and Medicare taxes in error, you must first ask your employer for a refund. If you are unable to obtain a refund from your employer, you must file Form 843 and Form 8316 to obtain a refund from the IRS for the Social Security and Medicare taxes withheld in error by your employer.
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