IRS Form W-9 (Rev. 12-2014) and instructions for providing a taxpayer identification number (TIN) and certification. The document explains required fields on the form (name, business name, tax classification, exemptions, address, requester info), Part I (TIN), Part II (certification), rules on backup withholding and FATCA reporting, special partnership/foreign-person rules, penalties, and how to obtain/update a TIN.
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Rev. 12-2014
Cat. No. 10231X