ad valorem tariffglossary / ad valorem tariff A tariff set as a percentage of the imported goods’ value.• This is the primary method used to calculate customs duties. 词条贡献者 资深译员陈鹏,毕业于国内顶尖的高级翻译学院,擅长翻译各类与全球贸易及投资相关的法律文件。