This paper presents brief overviews of innovative civil society and SAI practices adopted in six countries that were represented at an IBP audit conference in Manila that brought together representatives of civil society organizations and officials from public audit institutions. The overviews are followed by an analysis of the opportunities that are available for increasing collaboration between civil society organizations and national public audit institutions – as well as the challenges that these working relationships will generate. Finally, the paper discusses the steps that could be taken to mitigate these challenges and raise the profile and acceptance of participatory audit practices.