The Corruption Perceptions Index ranks countries and territories based on how corrupt their public sector is perceived to be. A country or territory's rank indicates its position relative to the other countries and territories in the index. This page provides the latest reported value for - Tonga Corruption Rank - plus previous releases, historical high and low, short-term forecast and long-term prediction, economic calendar, survey consensus and news. Tonga Corruption Rank - actual data, historical chart and calendar of releases - was last updated on July of 2018.