Do not send to IRS. Pearland, TX 77581. Do not send to the IRS or other IRS personnel. Print or type. About Form W-9, Request for Taxpayer Identification Number and Certification — IRS Requester who is requesting taxpayer identification number (TIN) under certain circumstances, including an invalid TIN and/or for a false, fictitious or illegal purpose. May also be used to request additional documentation in addition to the Form W-9. Also referred to as an N-9. What is Form W-9? Form W-9 is a tax form that provides a taxpayer identifying number (TIN) for identifying taxpayers. The TIN is used to verify the tax filing status of a taxpayer and may affect the filing of an individual income tax return. Who is eligible for Form W-9? Taxpayers whose main place of residence is the United States. Taxpayers who have a U.S. mailing address outside the United States. Taxpayers who meet all other requirements for requesting an IRS Form W-9. How does Form W-9 work? Taxpayers submitting Form W-9 electronically by e-mail must include the following information with their information submission: Personal Information (information such as name, address, date of birth, and Social Security number) Taxpayer Identification Number (TIN) Payments for tax returns or refunds What information is required for filing Form W-9? Additional identification information to verify taxpayer status (e.g., last 4 digits of social security number or driver's license numbers or foreign income tax account numbers) What is the process for filling out Form W-9? Requests for Form W-9 must be sent electronically via e-mail to The e-mail address for submitting Form W-9 electronically is: FormW9. Electronic. W9. Email. What information is required for completing and submitting Schedule E of Form W-9? When completing Schedule E, be sure to complete Form W-9 without the information you want to withhold and include all the information you are withholding. What is the process for completing I-831? Form I-831, Individual Taxpayer Identification Number (ITIN) Application to Amend Tax Return is a one-time electronic filing and filing activity. This is an individual taxpayer identification number (ITIN) application.