Abstract: The Non-Governmental Organization sector has been active in delivering important services both economically and socially in Rwanda. This study aim to assessed the Financial sustainability of NGO Case of study Centro International for Tropical Agricultural (CIAT).The objective of this study is To establish the effect of fund-raising strategy on Financial Sustainability for NGOs like Centro International for Tropical Agricultura , To examine the effect of income diversification strategy on financial sustainability for NGOs like Centro International for Tropical Agricultura , To ascertain the effect of management capability on financial Sustainability for Centro International for Tropical Agricultura .