If you want to change an existing tax rate in be.ENERGISED you can do this as follows. Go to Finance/Settings/Tax configuration and open the existing tax rate by clicking on the blue pencil symbol.
Under the menu item "Common information" you can determine which tax rate is printed on the invoice. In the following example we changed the Austrian sales tax from 20% to 18%.
Under “Finance information”, change the tax rate under “Percentage tax amount” into the desired figure. In this example, it has been changed to 18%.
By changing the net amount in the rate, you influence the gross amount.