The accounting of non-profit organisations (NPOs) was paid less attention to in the business literature of the past decades. International standards that correspond perfectly to the specifications of NPOs are difficult to find. The increasing internationalisation of the non-profit sector during the last few years made it necessary to pay more attention to the accounting of NPOs. National standards are relatively well developed in some countries. In Great Britain and Switzerland, for example, the qualitative components of the annual statement of account, which are very important for NPOs, are also regulated by law. As NPOs have special goals and their stakeholders have specific information requirements, extended forms of accounting are necessary. One of these forms is the sustainability reporting which became more important in the international context especially through the development of the Sustainability Reporting Guidelines (SRG) by the Global Reporting Initiative (GRI). By signing the INGO Accountability Charta many important international NPOs committed themselves to annually prepare a sustainability report according to the SRG and have it evaluated. On the other hand the IFRS are not very important for NPOs, because the IFRS were basically developed for for-profit organisations. The IFRS for SMEs is a standard specially developed for small and medium-sized entities and is, due to many simplifications, more appropriate for NPOs than the whole IFRS. Overall it can be stated that the internationalisation of accounting for NPOs is at an early stage. There exist many different standards and NPOs choose the standard which fits their needs best. Thus, international comparability is only feasible in the future, when a special international standard for NPOs is developed and NPOs are committed to comply with these rules.