Janusz Lewandowski, the EU budget commissioner, said: "If the EU had more of its own revenues, then transfers from national budgets could be reduced. I hear from several capitals, including important ones like Berlin, that they would like to reduce their contribution." He indicated that possible tax sources for Brussels could include an aviation tax and a financial transaction tax. Mr Lewandowski is also thought to wish to raise EU taxes from the sale of carbon dioxide emissions rights – which could lead to higher utility bills and petrol prices.