I'm having the same error. I have 3 children, ages 2, 9 and 13. I received the advanced payments in the total sum of $4,800. However, when after completing (but not filing) my taxes in TurboTax, my federal refund has dropped to $1,600. My AGI is under the threshold for phasing out payments, but the calculation is clearly wrong. Where is the refund of the other half of the full $9,600 I should be receiving in CTC? I believe the product is calculating incorrectly.
