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.
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