This report displays customer sales for multiple accounting periods in spreadsheet format, based on recorded invoices, not including orders or quotes.
Tips:
This report lets you look at customer sales on a month-by-month sales basis. Every few months, run this report from the beginning of the year to the current month. Scan across the rows. If any number (good or bad) jumps out at you and you can't figure out why, run the Sales [Customer Summary] report for that month.
See Moving Your Data to a Spreadsheet for Analysis.
Use this report for Customer Sales: Who, What, and How Much.