Bidraget for hver af de medlemsstater, fra hvilke der indkaldes bidrag, fastsættes i forhold til, hvor stor en del vedkommende medlemsstats bruttonationalindkomst (BNI) udgør af den samlede BNI i de medlemsstater, fra hvilke der indkaldes bidrag.
The contribution of each Member State from whom a contribution is due shall be proportional to the share of Gross National Income (GNI) of that Member State in the total GNI aggregate of the Member States from whom a contribution is due.