This economic report on Tonga is the result of a joint project of the Asian Development Bank (ADB) and the Australian Agency for International Development. It is part of ADB's Pacific Islands Economic Report series, which aims to assist governments in formulating policy by analyzing a country's economic and socioeconomic situation, key issues, and development prospects. The report provides a longitudinal study of the Tonga economy covering the last 2 decades.

This publication examines the performance of the Asian Development Bank in achieving the goals of Strategy 2020, one of the institution's long-term planning documents. It tracks recent development progress in Asia and the Pacific, assesses ADB's development effectiveness, and identifies areas where ADB's performance needs to be strengthened. The 2018 Development Effectiveness Review is the 12th in a series of yearly reports.

The 2015 Development Efectiveness Review (DEfR) is the ninth in a series of yearly reports by the Asian Development Bank (ADB) on its performance in achieving the priorities of Strategy 2020, its long-term strategic framework for 2008-2020. The 2015 DEfR tracks recent development progress in Asia and the Paciic, assesses ADB’s development efectiveness, and identiies areas where ADB’s performance needs to be strengthened.

The 2014 Development Effectiveness Review (DEFR) is the eighth in a series of yearly reports by the Asian Development Bank (ADB) on its performance in achieving the priorities of Strategy 2020, its long-term strategic framework for 2008-2020. The results framework on which the DEFR is based was updated in 2014 to reflect the recommendations of the Midterm Review of Strategy 2020. The 2014 DEFR tracks recent development progress in Asia and the Pacific, assesses ADB's development effectiveness, and identifies areas where ADB's performance needs to be strengthened.