Federal housing law
1017 Form 15100 (PDF)
Federal housing law as enacted — verbatim and citable.
- Edition
- 2026-10-03
- Last updated
- 2026-10-04
- Jurisdiction
- United States
Official source: IRS Forms, Instructions & Publications (https://www.irs.gov/pub/irs-pdf/f15100.pdf), retrieved 2026-10-03. U.S. Government work (17 U.S.C. § 105).
Form 15100¶
(October 2017)
Department of the Treasury - Internal Revenue Service
Adoption Taxpayer Identification Number (ATIN) Extension Request¶
Complete this form, and fax or mail it to us at: Standard: Internal Revenue Service Stop 6182 Austin, TX 73301-0066
Fax number: (855) 250-1731
Overnight: Internal Revenue Service 3651 S. Interregional Hwy 35 Stop 6182 Austin, TX 78741
If you have any questions contact us at (737) 800-5511 (not toll free)
Contact Information
Name Taxpayer Identification Number
Name Taxpayer Identification Number
If you changed your address, write your new address below.
Indicate which of the following circumstances apply to you
I received a social security number for
Write the social security number assigned (Name of adoptee)
I need a 1 year extension for
ATIN
Reason (Name of adoptee) (ATIN assigned)
I couldn’t get a social security number for
ATIN
Reason (Name of adoptee) (ATIN assigned)
Status of your adoption
My adoption is final My adoption is pending
I am enclosing documents the placement agency or agent signed
Original signatures of adoptive parents
Name (print/type) Signature Date
Name (print/type) Signature Date
Catalog Number 69794D www.irs.gov Form 15100 (Rev. 10-2017)