Q L1. Individuals who are not required to file a tax return asked me to assist them as they input their information into the Child Tax Credit Non-filer Sign-up Tool. May I provide this assistance? (added August 3, 2021) A1. Yes. You may assist another person, such as a friend or family member or through a volunteer tax return preparation service like VITA or TCE, as long as you have that individual’s permission. You may provide them assistance by helping them understand how to use the Child Tax Credit Non-filer Sign-up Tool or inputting their information into the tool for them. Do not complete the Child Tax Credit Non-filer Sign-up Tool without an individual’s direct participation because the tool requires the individual to declare that the information entered is true, correct, and complete and enter his or her own signature. If you are in the business of preparing tax returns for other people, you must follow the rules governing the disclosure or use of tax return information provided in sections 6713 and 7216 of the Code. Visit Section 7216 Information Center for more information. Q L2. I have a preparer tax identification number (PTIN). If I assist someone with inputting that person’s information into the Child Tax Credit Non-filer Sign-up Tool, how do I provide the PTIN to the IRS? (added August 3, 2021) A2. You do not need to provide a PTIN to the IRS. The Child Tax Credit Non-filer Sign-up Tool does not have a field to enter a PTIN. 2021 Child Tax Credit and Advance Child Tax Credit Payments Topics Topic A: General Information Topic B: Eligibility for Advance Child Tax Credit Payments and the 2021 Child Tax Credit Topic C: Calculation of the 2021 Child Tax Credit Topic D: Calculation of Advance Child Tax Credit Payments Topic E: Advance Payment Process of the Child Tax Credit Topic F: Updating Your Child Tax Credit Information During 2021 Topic G: Receiving Advance Child Tax Credit Payments Topic H: Reconciling Your Advance Child Tax Credit Payments on Your 2021 Tax Return Topic I: U.S. Territory Residents and Advance Child Tax Credit Payments Topic J: Unenrolling from Advance Payments Topic K: Verifying Your Identity to View Your Online Account Topic L: Commonly Asked Shared-Custody Questions Topic M: Commonly Asked Immigration-Related Questions Topic N: Returning a Payment