If social security or Medicare taxes were withheld in error from pay that is not subject to these taxes, ontact the employer who withheld the taxes for a refund. If you are unable to get a full refund of the amount from your employer.

• A copy of your Form W-2 to prove the amount of social security and Medicare taxes withheld,
  
  
• A copy of the page from your passport showing the visa stamp,
  
  
• INS Form I-94,
  
  
• If applicable INS Form I-538, Certification by Designated School Official, and