Internal Revenue Service United States Department of the Treasury
Level Basic Advanced Military International

Social Security Tax

Social Security and Medicare Tax Liability

Errors in Withholding

Occasionally, an alien's employer withholds social security and Medicare taxes from pay that is not subject to the taxes. When this happens, the taxpayer should contact that employer for reimbursement. If the employer does not refund the withheld taxes, file a refund claim on Form 843, Claim for Refund and Request for Abatement.

Top of Form 843.