The taxes, charge, and charge taxes values specified for the region will be appearing in the calculation block. In the above screenshot, you can see that the tax mode specified is Group for the region, London. Hence, no tax or discount is applied to individual line items. But if you glance down, there is a Tax
field whose value is applied for all the line items, i.e., to the Pre Tax Total field.
To know more about Tax Management, click here