Zero-rate

For example, zero-rating machinery invites attempts to redesignate as such other machinery likely to be used by exempt traders.

Source: wiktionary

We have to balance either zero-rating some of the goods or distributing them through spending. There are certain goods, however, that even if you zero-rated them, the poor still cannot afford them yet they are essential then we distribute them through spending.

Source: wiktionary

Local firms have also been for long objected that Ugandan illegally introduced a 12 per cent inspection fee in 2017 for Kenya’s pharmaceutical exports while it zero-rated Uganda- made^([sic]) drugs.

Source: wiktionary