What this notice is about We have important information about your child's Adoption Taxpayer Identification Number (ATIN). Your child's ATIN expires in 3 months. What you need to do Complete Form 15100, Adoption Taxpayer Identification Number (ATIN) PDF Extension Request, included with your notice if you received a Social Security number (SSN) for your child, or; Apply for a one-year extension of this ATIN by completing Form 15100, if you don't have an SSN. Detach notice stub, mail it with Form 15100 in the envelope provided. If you prefer, 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 What can I do if I don't have a Social Security number (SSN) for my adoptive child? You can request an extension before your assigned ATIN expires by completing Form 15100 included with your notice. The extension is only valid for 1 additional year. Reference tools Publication 1, Your Rights as a Taxpayer Full list of tax forms and instructions Bezwen èd? Ou ka otorize yon moun (an anglè) pou kontakte IRS la pou ou. Gade si w kalifye pou resevwa èd nan men yon Sant pou Kontribyab ki gen Revni Fèb (an anglè). Si w pa kapab jwenn sa w vle a anliy, rele nan nimewo IRS nan pati anlè avi oswa lèt ou a. Si w pa te resevwa yon lèt oswa yon avi, itilize asistans telefonik Si ou pa ka rezoud penalite a poukont ou, kontakte Sèvis Defans Kontribyab la, yon òganizasyon endepandan anndan IRS.
