We aren't communicating.  It is on the tax payment sheet as it should be.  That isn't the issue.  The issue is Form 2210.  Taxpayer shouldn't be charged an underpayment penalty for the first quarter when the overpayment was paid to the IRS prior to April 15.  This is a programming issue.  I understand that if the money was paid in May with the 2020 extension that the IRS won't back date it to the first quarter, but this situation (not uncommon with my clients) where they overpay with the 4th quarter payment (estimate high) because they have the money and don't want to pay more in April, so we always apply the overpayment and reduce the first quarter payment.  It is a cash flow issue, as they get huge year end bonuses.  

There should be an option to mark when the overpayment was made, not just assume it was made after 4/15.  On the estimates there are dates that we can change.  The same should be on the overpayment due to the bizarre way the IRS did things last year.