What this notice is about This notice says you may be eligible for the Additional Child Tax Credit and entitled to a refund. What you need to do Read your CP08 notice carefully. Complete Form 15110PDF, Additional Child Tax Credit Worksheet. If the worksheet confirms you have at least one qualifying child complete Schedule 8812, Credits for Qualifying Children and Other Dependents. Send us your completed Form 15110 and Schedule 8812 within 30 days from the date of your CP08 by either: Mailing using the envelope provided or Electronically using the Documentation Upload Tool by entering the access code on your notice. Frequently asked questions I want to mail my completed Form 15110 and Schedule 8812, but I lost my return envelope. (updated October 25, 2023) You can use any envelope to mail for Form 15110 and Schedule 8812 to the address listed on the top left corner of your CP08 notice. If you send it to a different IRS address, there could be delays in processing your information. What is the difference between the Child Tax Credit and the Additional Child Tax Credit? Can I qualify for both? (updated October 25, 2023) The Child Tax Credit is a non-refundable credit that allows people with a qualifying child to reduce their tax liability. You can claim up to $2,000 for each qualifying child under Under 17 as of the end of tax year 2023. The Additional Child Tax Credit is a refundable tax credit up to $1,500 as of the end of tax year 2022 per qualifying child and is for people who receive less than the full amount of their Child Tax Credit. You may qualify for both the Child Tax Credit and the Additional Child Tax Credit. I sent IRS my Form 15110PDF and Schedule 8812. When will I get my refund? (updated October 25, 2023) IRS will review your completed Form 15110PDF and Schedule 8812and 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 toll-free line at 800-829-1954 to check on the status of your refund. My child turns 18 this year. Can I still get the Child Tax Credit and the Additional Child Tax Credit? No. Your child must be under age 17 at the end of the tax year in question to qualify for both the Child Tax Credit and the Additional Child Tax Credit. Helpful information Publication 972, Child Tax Credit and Credit for Other Dependents Instructions for Form 1040PDF 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 and send Form 1040 and Schedule 8812. Consider filing your taxes electronically. Filing online can help you avoid mistakes and find applicable credits and deductions. In many cases you can file for free. Learn more about e-file. Reference Tools Publication 1, Your Rights as a Taxpayer Full list of tax forms and instructions Need help? You can authorize someone to contact the IRS on your behalf. See if you qualify for help from a Low Income Taxpayer Clinic. If you can’t find what you need online, call the IRS number at the top of your notice or letter. If you didn’t receive a letter or notice, use telephone assistance. If you can't resolve the penalty on your own, contact Taxpayer Advocate Service, an independent organization within IRS.