The Tax Department is streamlining withholding tax and wage reporting forms and Web File applications. No information is available for this page.An alphabeticalbytopic list is provided below containing information and downloadable PDF forms, when available, or links to external resources. Use Withholding Tax Web File to file your quarterly return. 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. To enroll, please complete an application and send it to Tarrant County Child Support Services. Clipboard and Pencil.