IRS Form 941-X, Adjusted Employer's Quarterly Federal Tax Return or Claim for Refund is a form used to correct mistakes on previously filed IRS Forms 941 or 941-SS. This form can be used to make Form 941 corrections for under-reported or over-reported amounts.
IRS Form 941-X is used to correct the following: wages, tips, and other compensation; income tax withheld from wages, tips, and other compensation; taxable social security wages; taxable social security tips; taxable Medicare wages and tips; taxable wages and tips subject to additional Medicare tax withholding, qualified small business payroll tax credit for increasing research activities; and credits for COBRA premium assistance payments.
The most recent version of the document was issued by the Internal Revenue Service (IRS) in April 2017. A fillable version of the form is available for download below.