Hiring an independent contractor to produce creative works? Download this Creative Independent Contractor Agreement to set the expectations of both parties.An independent contractor agreement is a contract between a freelancer and a client outlining work specifics. Going to hire a contractor in the USA? If the payee is a foreign company or a foreign individual (non-resident alien for U.S. tax purposes), they should complete the appropriate Form W-8. CONTRACTOR shall fill out and agree to the following Affidavit:. 9 form is a tax form that independent contractors and their hiring company or clients must complete. ISN is the global leader in contractor and supplier information management. To qualify as a buyer, you'll need to complete the form below and provide your qualifying documents. International Fuel Tax Agreement (IFTA).