In this report, I will examine the main challenges international organizations face when designing a monitoring tool for sustainable finance. I apply one case from an internship at the United Nations Conference on Trade and Development. The research employs literature regarding sustainable finance, international organizations & institutions, data quality & transparency, and monitoring performance in sustainable finance. The research method is an auto-ethnographic identifying the main challenges through a chronologically written narrative in five stages from conception to reporting. The major findings reveal the challenges in designing a monitoring tool are twofold-the institutional framework and the sustainable finance academic field. The United Nations Conference on Trade and Development is subject to the United Nations institutional framework where compartmentalization of skills, maintaining outdated practices, and lack of resources causes challenges. The process of designing monitor tools for sustainable finance faces challenges from the academic field that lacks objective, flexible measures and quantifying qualitative data is a source of difficulty. To solve this, I suggest modernizing and dedicating more time and resources to further research within monitoring sustainable finance. Further research regarding modernizing the United Nation’s institutional framework and accurate, objective, and flexible sustainable finance indicators is essential to overcoming these obstacles.