What this notice is about Important Information about your child's Adoption Taxpayer Identification Number (ATIN). We assigned your child an ATIN. What you need to do Complete Form 15101, Provide Social Security Number (SSN) for Adoptive Child PDF, included with your notice when you receive a Social Security number (SSN) for your child. Detach notice stub, mail it with Form 15101 in the envelope provided. If you prefer, you can fax your information to the fax number in the notice using either a fax machine or an online fax service. Protect yourself when sending digital data by understanding the fax service’s privacy and security policies. You may want to Call us at the number listed in your notice. See additional information on Adoption Taxpayer Identification Number. Frequently asked questions How long is an ATIN useful? An ATIN is valid for 2 years. If you don't have an SSN for your child, you can request a 1 year extension. For more information, see instructions for completing a Form W-7 A, Application for IRS Adoptions for IRS Individual Taxpayer Identification Number. Reference tools Publication 1, Your Rights as a Taxpayer Full list of tax forms and instructions 需要協助嗎？ 您可以授權某人（英文）代表您向國稅局聯絡。 請查看您是否符合從低收入納稅人協助中心（英文）獲得協助的資格。 如果您無法在線上找到您需要的資訊，請撥打您的通知或信件上方的國稅局號碼。如果您未收到信件或通知，請使用電話協助。 如果您無法自行解決罰款，請聯絡 IRS 內部的獨立組織——納稅人權益維護服務處。
