Abstract The objective of the article is to establish why a financial bonus for Slovenian–Italian bilingualism was introduced in the District of Koper (comprising today’s Slovenian municipalities of Ankaran, Koper, Izola and Piran), which came under Yugoslav rule after 1954. Using Brubaker’s triadic nexus concept and analysis of newly discovered archival sources, the authors found that (a) on the federal level, Yugoslavia only focused on minority protection as much as it was required to by international agreements and treaties, (b) the Italian minority itself was not a relevant actor in the Yugoslav system of minority protection, (c) Italy had a marginal role in the process of protecting the Italian minority in Yugoslavia, and (d) the political elite in Yugoslavia introduced the bilingualism bonus to encourage the integration of the Italian minority when building a new (socialist) sociopolitical order. The Slovenian-Italian bilingualism bonus was therefore not an altruist measure directed at minority protection, but rather a self-serving measure by the authorities to reinforce their power.