The Tax Report found under the Manager's Report area, offers a report showing when the 'Tax Exempt' box is checked, 'manually' removed, or both. Note, this report is based on when the ACTION occurs and not when the booking arrives or checks out.

 

If one wanted to know how much tax exempt revenue was given in a particular year, then the report parameters will be long (say, from 2008 to 2010) and one would send the report to Excel and then sort via the Check Out date which is included in the report.