You can view the Sales by Customer report to get the total sales for a period and customize this report to compare it with the previous months/years. Here’s how you can view and customize the report:
Similarly, you can compare the reports in the Sales section with the previous years/periods as required.
Insight: The date range needs to be selected as This Month in order to compare current month sales with previous month.
Books
Simplify accounting
and GST filing.