Six months ahead of the December 2015 Busan deadline, Publish What You Fund assessed 22 major EU and US donors to see whether they were ‘on track’ or ‘off track’ to meet their aid transparency commitments. Additional resources 2015 US Review 2015 EU Review

The 2016 Index was launched in April at the Center for Global Development in Washington DC. Helen Clark, UNDP Administrator, gave the keynote address. Additional resources 2016 website 2016 Index 2016 US Brief Data Technical paper FAQs

The 2018 Index methodology review was released in June 2017. Additional resources 2018 Aid Transparency Index 2018 US Brief 2018 EU Brief 2018 Index technical paper 2018 Index guidelines What Proportion of Aid is Actually Transparent? Assessing the visibility of IATI data in the Aid Transparency Index – A discussion paper