Desuden viser erfaringen, at det er mere hensigtsmæssigt at indeholde kildeskat på renteindtægter, selv om man alle steder forsøger at påtvinge det forfejlede system for udveksling af oplysninger.
Furthermore, experience shows that the system of tax deduction at source for the taxation of savings is the most efficient system, rather than trying to impose, across the board, the information exchange system which has its own problems.