Please do not be concerned. Under the best conditions, it sometimes
takes two or three business days for payments to actually clear the
banking system and appear in your account. For state taxing agencies,
April 15 would never be considered the best conditions, as you might
imagine. Be confident that your payment will be processed by your state
taxing agency and it will be treated as having been received on April
15, if that is the date you specified when you filed.