Prudential rules on the own funds of banks adopted by the Basle Committee are biding as soon as they will be transposed in a binding legal text. The new rules of Basel III must take the force of a European directive. This gives rise to a new discussion, nor between the central bank governors (as in Basel), but between Finance Ministers of the European Union member states, in Brussels. On this occasion, each State defends the interest of its banks; the rule advocated by him corresponds to its banking structure or its type of banking business. In any case, the banks, anticipating the application of Basle III, have already integrated the prudential requirements in their accounts, hoping that their State will preserve it.