Japan has been the top contributor to ADB's Special Funds, such as the Asian Development Fund, ADB Institute, and Japan Special Fund.

Asian Development Fund (ADF)

Japan’s contribution to the ADF, ADB’s window for concessional lending to its borrowing members, totaled $10.08 billion at the end of 2010 (at exchange rates per resolution), accounting for 37.92% of the total ADF (committed). It compared with the 14.17% contribution from the United States and the 6.78% contribution from Australia. More

ADB Institute

This special fund covers the operation costs of ADB Institute, which helps ADB's developing member countries (DMCs) identify suitable development strategies. As of 31 December 2010, the cumulative commitments amounted to $165.60 million, excluding translation adjustments. More

Japan Special Fund (JSF)

Between 1988–2008, Japan contributed to the JSF, which provided grants to ADB’s borrowing members to help prepare projects and undertake technical or policy studies. The JSF-supported activities related to environment protection, gender and development, private sector promotion, and finance sector reform. Japan’s contributions to the JSF (committed), as of 31 December 2010, have amounted to $973.7 million.

From 1988–2010, the JSF has financed $1.17 billion of the cumulative total technical assistance approved by ADB. More

Technical Assistance Special Fund (TASF)

Japan also contributes to the TASF, which provides grants to borrowing members to facilitate the flow and efficient utilization of development finance to DMCs and to enhance their development capacity. As of 31 December 2010, Japan's contribution to the TASF (committed) amounted to $335.0 million. More

Japan has contributed to the following trust funds:

Japan Fund for Poverty Reduction
Asian Clean Energy Fund
Investment Climate Facilitation Fund
Japan Fund for Information and Communication Technology
Japan Fund for Public Policy Training
Japan Scholarship Program