specific tax References specific tax international trade Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: international trade/ How tariffs work), they are called specific tariffs. If they are levied according to the value of the import, they are known as ad valorem tariffs. Read More), they are called specific tariffs. If they are levied according to the value of the import, they are known as ad valorem tariffs. Read More