One essential form for overseas contractors is Form W-8BEN. In general, you aren't obliged to withhold taxes from independent contractors.However, you may still need to report taxes. Use the steps below to engage and pay your Nonresident Independent Contractor. You can also read about other processes for nonresident contractors. The compensation is not exempt from U.S. tax if the contractor is a U.S. resident. You must file Form IL-1040 and include as Illinois income any compensation you received from an employer in these states. Other required fees and taxes will vary depending upon the corporation's paid- in capital and the proportion of property and business that will be in Illinois. How to fill out Form 1099 for Independent Contractor? Otherwise, you could be subject to IRS penalties like steep fines and interest.