Between 2011 and 2016, the prison population in NSW rose by over 30 per cent. This placed significant pressure on existing prison infrastructure. Whilst the growth in the State’s prison population is now slowing, the prison system continues to operate at close to capacity. In the 2016–17 Budget, the NSW Government announced $3.8 billion over four years for the Prison Bed Capacity Program to address the increased population. Our audit will examine how well the government is predicting and managing prison bed capacity.