In recent years, scholars have called for studies exploring how key concepts originating from the children's rights discourse are understood in local contexts. In Sweden, national policy advocates that a child perspective should guide social assistance (SA), a cash benefit constituting society's last safety net. The study analyses the child perspective as an idea (i.e. an ambiguous principle), which is translated (i.e. reformulated and interpreted) at the local level. The findings indicate multiple and partly inconsistent translations of a child perspective. The study argues that it is unclear what adopting a child perspective implies for children in families receiving SA.