This article discusses the Swedish Truth and Reconciliation Commission for Tornedalians, Kvens and Lantalaiset (operating 2020–2023), with the aim of stimulating further research by relating it to the emerging literature on Nordic TCs tasked with documenting historical truth to promote accountability and social change, and by identifying some of the main challenges faced by this TRC. Originally a civil society truth initiative, the Commission was established as a government committee to investigate the ‘Swedification process’, i.e. assimilationist policies that have resulted in language loss and invisibility. Based on an analysis of the Commission’s terms of reference and reports, the study illustrates challenges that can arise when the transitional justice toolbox is used in consolidated democracies to document rights violations that have occurred over a long period of time. For example, the Swedish TRC was expected to comment on the accountability of relevant actors, a complex task as the policies under scrutiny were implemented at national, regional, and local levels, by actors representing both the state, the Church of Sweden, and a private foundation. The article provides an overview of the Commission's recommendations to the Swedish government and its Calls to Action addressed at several other actors, to facilitate international comparison.