Development of the OECD Inter Country Input‑Output Database 2023

This document describes the sources and methods used to construct the 2023 edition of OECD’s Inter-Country Input-Output (ICIO) tables. ICIO tables provide a globally balanced view of the domestic and international flows of goods and services used as intermediate inputs into production and to meet final demand. The development of ICIO tables accelerated in 2010, following the collapse in international trade during the 2008-09 global financial crisis, reflecting the need for a deeper understanding of the complex economic linkages between countries and regions, particularly with the rise of global value chains (GVCs). Trade policy analysts’ demand for Trade in Value Added indicators, as a complement to traditional gross trade statistics, was a key impetus for producing ICIO tables. These tables are crucial not only for GVCs analysis but also for addressing globalisation-related issues, such as employment and gender in GVCs, trade in embodied carbon and the impacts of economic shocks.