A N A LY S I S ECONOMY AND FINANCE GOING CIRCULAR How the Harmonized System Codes Can/Not Support a Circular Economy and What Else Could Be Done Jack Barrie and Gael Grooby August 2023 Are you interested in the circular economy? Did you always want to deepen your understanding about the HS codes? And are you open for experiments? Then please read this paper. It evaluates the extent to which the World Customs Organization Harmonized System of Codes (HS), a standardised method of clas­sifying and tracking traded goods, could play a role in facili­tating a circular economy. The HS will be a critical tool for a global CE transition, ena­bling governments to monitor, regulate and facilitate circular trade flows more effectively. How­ever, maximising the po­tential use for this would re­­quire some significant changes to the way the HS works.