Employers are required to withhold and pay personal income taxes on wages, salaries, bonuses, commissions, and other similar income paid to employees. Gov (search: IT-2104-I) or scan the QR code below.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. How to fill out w4 tax form. How to manage employee tax withholdings. Withholding tax accurately is the legal responsibility of the issuing company. The Tax Office collects fees for a variety of state and local government agencies and proudly registers voters in Travis County! Employee's social security number. Spouse's social security number.