Hi Cchoffman811!

QB treats each job as a "subcustomer" of your customers. To get an accurate count of how many active customers you have, the excel file would have to be edited to remove the jobs/"subcustomers". Or you can run the Customer Contact list/Phone list report(s) and customize them to only display the customers and not the jobs. Either way would be a manual process, however you can memorize the report and use that to get an accruate count when needed. 

Hope this helps!

Amanda