Supplementary unit

Also called: second quantity · ek ölçü birimi

A quantity other than net mass that must be declared for some tariff lines, such as number of items, pairs, litres or square metres. The required unit is shown against the code in the tariff.

In practice

Missing or wrong supplementary units cause declaration errors and distort specific duty calculations based on that unit.

Applies to: EUTürkiyeUSAUK

Related terms

Specific duty
A duty expressed as a fixed amount per unit of quantity, for example per kilogram, per litre, per head or per pair. Specific duties are frequent for…
Tariff line
The most detailed code in a national or regional tariff at which a duty rate or measure is set, such as an eight-digit CN code, a ten-digit TARIC or…
Customs declaration
The act by which a person indicates, in the prescribed form, the customs procedure to be applied to goods and provides the data needed to apply it,…

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