The "lesser duty rule" is a so-called "WTO-plus" commitment of the EU, i.e. which allows the Commission to set a duty at a level lower than the dumping margin when this lower level is sufficient to remove the injury suffered by the Union industry.
Väiksema tollimaksu reegel on ELi nn „WTO-plus“ kohustus, mis võimaldab komisjonil kehtestada tollimaksu dumpingumarginaalist madalamal tasemel, kui see on piisav, et heastada liidu tootmisharule tekitatud kahju.