Attachment B: Contractor's Scope of Work and Fee Schedule. This form contains mandatory contract provisions and must be attached to and specifically incorporated in all.Step 1: Review the available forms in the column to the right and download the appropriate PDF. Fill out the PDF and save a copy. Going to hire a contractor in the USA? Understand tax requirements when hiring a foreign contractor. Our guide provides essential insights for seamless compliance with international tax laws. We break down the essential forms (W-9, W-8BEN, 1099, 1040) and deadlines. Independent contractors might draw up a contract and present it to their client before beginning the project. When to withhold independent contractor taxes?