We are in process of buying a house. The seller has told the council tax people that we have completed the sale. Letters have been coming for us expecting us to pay! We haven't even exchanged yet, still waiting for searches etc! I have rung the council tax people and told them. They were surprised! I know we dont have to pay until completion, they have just asked us to send them proof of completion when it happens. But is what the seller has done seen as fraud?