Client wants refund applied to first estimate then balance refunded.  My thinking is June 15 is first estimate that is due so apply refund there. Let client pay what's normally due April 15 on July 15.  I can make ProSeries do this by overriding Overpayment Applied on voucher 1 on Estimated Tax Worksheet. Is there any harm in doing this ?   I'm tired and worried my judgement is slipping.