Withholding returns must be filed electronically for taxable years beginning from and after December 31, 2019. Gov (search: IT-2104-I) or scan the QR code below.Las personas que renuevan el ITIN tienen que incluir una declaración de impuestos federales de los. To elect an Arizona withholding percentage, an employee must complete Arizona Form A-4, and submit it to their employer. How to manage employee tax withholdings. Withholding tax accurately is the legal responsibility of the issuing company. Entregue su formulario IL-W-4 completo a su empleador. Guarde la hoja de cálculo para sus registros.