Complete Form W-4 so that your employer can withhold the correct federal income tax from your pay. Give Form W-4 to your employer.Gov (search: IT-2104-I) or scan the QR code below. Harris County Tax Office Forms. Automotive Property Tax Special Permit Taxes VoterRegistration Miscellaneous. How to manage employee tax withholdings. Withholding tax accurately is the legal responsibility of the issuing company. Wage withholding is a process in which monies are withheld from the non-custodial parent's wages. Employee's social security number. Spouse's social security number.