Understanding Your CP08 Notice


What this notice is about

This notice says you may qualify for the Additional Child Tax Credit and be entitled to some additional money.

What you need to do

You can respond online

Send us your documents using the Documentation Upload Tool within 30 days from the date of this notice. Enter the access code from your notice to use the tool.

Frequently asked questions

I lost the return envelope. Where do I mail my worksheet and Form 8812?

Mail the worksheet and form to the address listed on the top left corner of the worksheet. The IRS center listed handles cases in your region, so you must send it there to avoid potential delays in processing.

What is the difference between the Child Tax Credit and the Additional Child Tax Credit? Can I qualify for both?

The Child Tax Credit is for people with a qualifying child. You can claim up to $3,600 for each qualifying child under age 6 and $3,000 for each qualifying child over age 5 and does not turn 18 before January 1st, 2022. The Additional Child Tax Credit is worth up to $1,400 per qualifying child and is for individuals who receive less than the full amount of Child Tax Credit. You may qualify for both the Child Tax Credit and the Additional Child Tax Credit.

I sent you my Form 15110PDF and Form 1040. When will I get the refund

We will review your Form 1040PDF and Form 15110PDF and make a determination on your credit. If we deny your credit, we will send you a letter explaining why. However, if you owe no other amount, you should receive your refund in 8 to 10 weeks. If you don't hear from us after 8 to 10 weeks, call our Where’s My Refund? toll-free line at 800-829-1954 to check on the status of your refund.

My son or daughter turns 18 this year. Can I still get the Additional Child Tax Credit?

No. Your child must be under age 18 at the end of 2021 to qualify for both the Child Tax Credit and the Additional Child Tax Credit.

Helpful information

Tips for next time you file

If you have dependent children, remember to claim the Additional Child Tax Credit the next time your file your Form 1040, U.S. Individual Income Tax Return. To do this, complete a Form 1040 and attach Form 1040 Schedule 8812 to your return.

Consider filing your taxes electronically. Filing online can help you avoid mistakes and find credits and deductions in which you may qualify. In many cases you can file for free. Learn more about e-file.

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