What are the roles of customs and excise in foreign trade.?

Customs and excise play vital roles in foreign trade by regulating the flow of goods across borders and ensuring compliance with national laws. Customs authorities assess and collect tariffs and duties on imported and exported goods, which helps protect local industries and generate government revenue. Excise duties, on the other hand, are levied on specific goods, such as alcohol and tobacco, to control consumption and raise funds. Together, these functions help maintain trade balance, enhance security, and promote fair competition in the marketplace.