かんぜい関税kanzei
1.

A tax levied on goods as they cross national borders, primarily applied to imports in Japan, intended to regulate trade and generate revenue for the government.

2.

A financial charge imposed by customs authorities, which can serve various purposes such as protecting domestic industries or raising governmental funds, distinct from the export tax, which is not currently applied in Japan.

3.

A historical form of taxation collected at border checkpoints, traditionally used to control the flow of goods and ensure compliance with trade regulations.

Example:

関税申告書が必要になります。