That's right. Here is what the letter from the state says... Prepayments (Lines 19-22, Form 104) " The amount has been adjusted to match the total payments credited to your account. Please check your payment record, and submit proof of payment for any missing amount."
Based on that, they recalculated and now I have an amount due and a small penalty. On the Colorado form 104, line 19 is the Prior Year Estimated Tax Carryover, which the amount I carried over from the 2020 return. Line 20 was the sum of the quarterly estimated payments I made in 2021. Lines 21 and 22 don't apply and are blank. From what I can tell, lines 19 and 20 are accurate and there aren't any missing amounts. Because of that, I don't know why they adjusted the amount of the payments I made.
