Understanding Your CP561B Notice


What this notice is about

We have important information about your child’s Adoption Taxpayer Identification Number (ATIN). The extension for your child’s ATIN expires in 3 months.

What you need to do

  • Complete Form 15101, Provide Social Security Number (SSN) for Adoptive Child PDF, included with your notice if you received 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 it to the fax number in the notice using a fax machine or an online fax service. Several online fax services use the internet to send files form your computer or smart device to a fax number.

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Frequently asked questions

What if I don't have a Social Security number (SSN) for my child?

You can’t claim your child on your tax return. You can file an amended return once you have an SSN for your child.

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