Find Form W9, Form 1099 and instructions on filing electronically for independent contractors. Please see Form 3901 (PDF) for out-of-state businesses and Form 3902 (PDF) for affiliates of in-state businesses.Going to hire a contractor in the USA? How do I fill this out? To file 1099MISC for USbased independent contractors, click this link and download the form. All of these documents together make up the full construction contract. 8 things a subcontractor agreement should include. Texas Independent Contractor Agreement. For vendor set up in DustyBuy, your contractor will also need to complete and submit one of the following forms -.