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For you and your family
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Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

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Excess Social Security & RRTA Tax Withheld at a Glance

A credit for taxpayers who:

  • worked for two or more employers and had too much Social Security tax withheld from their pay; OR
  • railroad employees who had excessive tier 1 railroad retirement (RRTA) tax and tier 2 RRTA tax withheld.

This is a refundable tax credit, which means taxpayers may get money back even if they have no tax withheld.

More Information

Tax Topic 608 - Excess Social Security and RRTA Tax Withheld

Related Form

Form 843, Claim for Refund and Request for Abatement (PDF)

Related Publications

Publication 17, Your Federal Income Tax - Chapter 38, Other Credits - Under Refundable Credits, see Credit for Excess Social Security Tax or Railroad Retirement Tax Withheld

Publication 505, Tax Withholding and Estimated Tax - Chapter 3, Credit for Withholding and Estimated Tax - See Excess Social Security or Railroad Retirement Tax Withholding