A customs union has the same external tariffs on imports from outside the group.
A customs arrangement can be any kind of arrangement involving customs. Could be anything.
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wto.org/english/docs_e…
It applies “substantially the same duties and other regulations of commerce … to the trade of territories not included in the union”
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uktradeforum.net/2018/01/15/cus…
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WARNING! Includes “rules of origin”, “diagonal cumulation”
vimeo.com/252854131
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WARNING! Also includes “rules of origin”, “diagonal cumulation”
blogs.sussex.ac.uk/uktpo/2017/09/…
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The WTO’s database lists 23 (29 if each of the six EU enlargements are counted separately)
rtais.wto.org/UI/PublicSearc…
Search by criteria & choose: Coverage=goods, Type of agreement=customs union
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