The Aid Transparency Index is the only independent measure of transparency among the world’s leading development organisations. It is a periodic publication researched and produced by Publish What You Fund. The Index tracks and encourages progress towards aid transparency, while holding donors to account.

Until 2024, the Aid Transparency Index operated as a global public good, was philanthropically funded and focused exclusively on the world’s 50 leading aid organisations. From the 2026 edition onwards, in response to growing demand, the Index will adopt an accreditation-based model. For the first time, it will become a paid-for service, expanding its reach to include a wider range of aid and development organisations. These organisations will have the opportunity to be independently assessed, benchmarked, and formally recognised for their transparency.

To see more on the 2026 Aid Transparency Index please visit the main Index page here: https://www.publishwhatyoufund.org/the-index/

Prior to the 2026 Index we reviewed the criteria for donor selection before each Index process began. We assessed 50 organisations in 2024 and 2022, 47 in 2020, and 45 in 2018. For the 2024 Index we will assess 50 organisations. Details of the organisations we will be assessing and reasons for their selection are given here.

The comparison chart provides details of which organisations have been assessed, and their scores, since 2013.