DawnC
Expert Alumni

After you file

When you went through the Child Tax Credit, you did not enter the $1500 of Advance Payments.   TurboTax has no way of knowing what payments you received; we ask.   You can't e-file a return without answering those questions first.    You would have received Letter 6419 with the amounts.     If you filed a return claiming the full amount of the Child Tax Credit, you did not enter your advance payments.    Since the advance was not entered, you claimed the full amount of the credit.   But since the IRS knows you got the payments, they adjusted your refund.   @AFields

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