Post-conflict justice is an integral component in maintaining stability and building peace in the aftermath of civil conflict. Despite its instrumental function, scholars routinely find that policymakers’ choice of justice is shaped by the structural conditions of the post-conflict environment, with outright victories leading to retributive forms of justice and negotiated outcomes yielding restorative forms of justice. However, existing literature conflates ceasefires and peace agreements into a single phenomenon, thereby overlooking the independent effects of each outcome. Leveraging the dual sovereignty framework, this article argues the conflation of negotiated outcomes is problematic because peace agreements and ceasefires generate different post-conflict environments. Relative to ceasefires, peace agreements lead to a reduction in the degree of dual sovereignty because they resolve a conflict’s incompatibility, thereby encouraging efforts to move society beyond war through restorative forms of justice. Due to the persistent threat of recurrent war generated by high levels of dual sovereignty, policymakers following ceasefires will be inclined to pursue retributive forms of justice that may target political opponents or potential defectors to bolster organizational strength. Statistical analyses confirm the underlying expectation that ceasefires and peace agreements yield different post-conflict justice outcomes. Peace agreements, relative to ceasefires, are more likely to be followed by the implementation of amnesties and reparations, whereas ceasefires exhibit a greater probability of yielding purges in the post-conflict environment.