Report to Show Inactive Vendors

There is not a report that shows the last time a vendor was paid.  An alternative would be to run the Total Vendor Payments Report.  If you run it for the last year (07/01/2013 through today), it will list only those vendors to which you have written a check during that time frame.  You could then use that to go through the Vendor List.  If the vendor is not on the report, they have not been paid since 07/01/2013, and you could then inactivate them.  Of course you can use any date range you want - the above was just an example.