Thus, your contractor must have a US bank account to meet the requirements. Check if Gusto can help you pay your contractors who live outside the U.S. Learn how to add them, set up regular payments, and pay them.Yes, it is legal under US tax law. US tax law is concerned with collecting tax. In that case, a US company should not withhold or report taxes. Paying everyone in US dollars. This approach works well if your international contractors have US dollar accounts. When a US company hires independent contractors who are US residents, it should have contractors complete Form W9.