Providing transparency and accountability can be achieved by efficient governance mechanisms, which need interactive participation of stakeholders in the decision-making process. On the other hand, it is fair to say that traditional reporting is inadequate to inform stakeholders of an organization's activities. Therefore, sustainability accounting has become more popular among authorities and organizations in order to provide comprehensive information which concentrates on value creation and sustainable development. In this chapter, the authors aim to touch on the need of sustainability accounting to support multilevel governance mechanisms by describing the main dimensions of sustainability accounting and integrated reporting.