For det andet vil valutasvingningerne være mindre, og erfaringen viser, at med systemet med den månedlige toldkurs har disse svingninger kun betydning for de medlemsstater, der ikke er med i EMS'en.
Furthermore, monetary fluctuations would also be reduced and experience shows that those fluctuations, with the system of monthly customs rates, are only significant for those Member States which are not in the EMS.