["Child &Family Social Work, EarlyView. ", "\nABSTRACT\nDespite transition planning practices for young people (YP) in out‐of‐home care (OoHC), many continue to experience inequities after care, suggesting that intended outcomes are not being achieved. In Victoria, Australia, a Care and Transition Plan (transition plan(s)) document is the primary mandated tool to capture YP's transition goals, actions and supports for leaving care. The quality of the transition plans may play a critical role in shaping outcomes, yet little is known about how they are implemented. This study aimed to assess the quality of transition plans for YP across four OoHC providers and the contextual and participatory factors associated with quality. A Transition Plan Quality Assessment Tool was applied to 196 plans. Quantitative analyses explored the demographic factors associated with plan quality. Qualitative content analysis explored how YP's transition planning needs were considered. Most plans were of moderate quality, with significant variation by placement type, age, length of placement, Aboriginal and Torres Strait Islander status, YP's involvement and who authored the plan. Notable gaps were identified in housing, transition‐from‐care services and cultural considerations. As the first study to examine transition plan quality across placement contexts, the findings underscore the need to redesign transition planning tools and system‐wide reform to enhance the quality of transition planning for YP leaving care.\n"]