There is growing concern in Australia about the residual risk of acts of terrorism or violent extremism posed by offenders after their release to the community from jail. A number of legislative measures have been passed that attempt to address this particular risk. Terrorism risk assessment tools are central to the effective operation of these new laws. Although existing tools demonstrate potential in assisting decision makers in identifying and managing persons that pose a risk of extremist violence there remain several challenges. These tools provide a useful guide to information gathering and analysis, however the assessment process is time consuming and resource intensive. Further, existing tools are currently given limited weight by the courts which impairs the effectiveness of legal measures designed to address residual risk.