Best ways to pay your international contractors and freelancers with guaranteed ease, compliance and automation. The Tax Department is streamlining withholding tax and wage reporting forms and Web File applications.Learn more about taxes and payment methods you need to be aware of to make the most out of working with contractors abroad. The first step is to have the contractor complete Form W9, Request for Taxpayer Identification Number and Certification. Social security and Medicare taxes for 2025. This guide contains everything you need to know about paying independent contractors in other countries, compliantly and at scale. Tax tips for independent contractors! All prices are subject to change at any time without notice. Payment. 283 W. 5th St. Safford, AZ 85546 (928) 428-4653.