Navigate to Accounting > Profit & Loss. Select the Store/Shop in the window that appears. If this is left to the default store already selected, then the report will be for the overall business. Selecting a store/shop helps you extract PnL for a specific store/shop.
Select the report period and the Purchase Option including:
a. General Purchases: If selected, notice the difference in the purchase expense section. This will get you a summation of all the purchases made within this period in the expense section.
b. Cost of Sale: This option will only give you the cost of sale recorded during the sales posted within the specified report period.
Profit & Loss Report