PurposeThe purpose of this paper is to explore how blockchain and triple-entry accounting technologies may improve non-governmental organisation (NGO) accountability by amplifying the social and economic outcomes of aid. It also provides a critique of these technologies from an accountability perspective.Design/methodology/approachAn in-depth case study of a large NGO, relying on semi-structured interviews, document analysis and non-participant observation, provides an understanding of current issues in existing NGO accountability and reporting systems. A novel case-conceptual critical analysis is then used to explore how blockchain and triple-entry accounting systems may potentially address some of the challenges identified with NGO accountability.FindingsAn empirical case study outlines the current processes which discharge accountability to a range of stakeholders, emphasising how “upward” accountability is privileged over other forms. This provides a foundation to illustrate how new technology can improve upward accountability to donors by enabling more efficient, accurate and auditable record-keeping and reporting, creating space for an NGO to focus on horizontal accountability to partner organisations and downward accountability to beneficiaries. Greater accountability exposes NGOs to diverse views from partner organisations and beneficiaries, potentially enhancing opportunities for learning and growth, i.e. greater impact. However, blockchain and triple-entry accounting can also create “over-accounting” and further entrench the power of upward stakeholders, such as donors, if not implemented carefully.Research limitations/implicationsA novel case-conceptual critical analysis furnishes new insights into how existing NGO accountability systems can be improved with technology. Despite the growing excitement about the possibilities of blockchain and triple-entry accounting systems, this paper offers a critical reflection on the limitations of these technologies and suggests avenues for future research.Practical implicationsExamples of how blockchain and triple-entry accounting systems can be integrated into NGO systems are presented. This research also raises the importance of creating a strong nexus between humans and technology, which ensures that “socialising” forms of accountability that empower vulnerable stakeholders, are embedded into international aid.Originality/valueThis research provides insight into present challenges with NGO accountability, using empirical evidence, furnishing potential solutions using novel blockchain and triple-entry accounting systems. Greater accountability to partner organisations and beneficiaries is important, as it potentially enables NGOs to learn how to be more impactful. Therefore, this paper introduces rich, contextually embedded perspectives on how NGO managers can exploit such technologies to enhance accountability and impact.