This article shows that for post-revolutionary Tunisia, a holistic approach to transitional justice – which aims to address a wide range of justice issues through a combination of measures – may lead to an expansion of mandates and consequently, to the overloading of transitional justice institutions. It therefore identifies a ‘problem-capacity-nexus’: While the expansive approach appears well-suited to relevant problems and the capacities of transitional justice professionals, it does not necessarily fit with the capacities of domestic institutions. Thus, transitional justice, while making efforts to address a broad range of relevant problems, has yet to find suitable avenues for actually doing so.