Then set your tax as "obligatory" "per day" or "per booking" "per adult".
'''Example 13''': 7% VAT are included in the room price. The lodging offers breakfast as an extra. 19% VAT are included in the price for the breakfast. Additionally the lodging needs to charge 5% city tax on which 7% VAT applies
Go to SETTINGS->PROPERTIES->BOOKING RULES and set "Vat Rate %" = 7