Who is require to withhold? • Withholding Agent.You may need to withhold tax if you make nonwage payments to nonresidents. This is called nonresident withholding. Gov and search for withholding requirements for updates, online tools, and more information, including: Forms and Publications They need the contractor's tax ID number in their home country. You can learn more about both forms at the links below: About Form W-8 BEN. All businesses are required to have a valid business license from the City of Santa Clara in order to transact business or occupy space in the City. California payroll taxes start with employees filling out DE 44. Contact our San Jose tax lawyer for help with 1099 forms, backup withholding, and other tax issues.