miǎn​shuì

duty-free

免税 (免稅) miǎn​shuì
duty-free verb
exempt from customs duties or sales taxes, typically for retail goods and imported items

He bought a bottle of perfume at the airport duty-free shop.

tax-exempt verb
not liable to taxation, often referring to specific institutions, entities, or categories

Certain charities enjoy tax-exempt status.

Frequency

Movie subtitles
1.82 per million appears in 1% of films
Written text
4.03 per million

Sources

Definitions
CC-CEDICT