Note: this unedited article may be used within a new chapter in my inflation primer.
The topic of tariffs became of extreme importance in 2025, courtesy of American President Trump’s trade war on the rest of the world. In the modern meaning, a tariff is a tax on imports or more rarely, exports. (In practice, “export taxes” seems to be used in the financial media.) The origin of the term is that it referred to tables, coming from the Arabic ta’rif (a notification or announcement, see reference by Paul Anthony Jones below). The tables were of fees paid by traders, and so the meaning of the word in European languages evolved to refer to fees. In English, the meaning became more specialised to just refer to import/export taxes.