I realize this is a really old post but I did want readers to know that some of the newer ScanSnap models include a software application called ScanSnap Receipt which can automatically recognize key fields such as amount paid and date, as described in the post above. I believe the download is also available for some older ScanSnap models so I would suggest trying the ScanSnap Online Update feature to get all the latest software.

More information can be found here: http://scansnapcommunity.com/tips-tricks/12827-scansnap-receipt-step-by-step/