This paper explores the interplay between Regime Theory and the International Organization, for this paper, only the International Monetary Fund (IMF), will be focused on compliance issues within the Global South. This theory posits the sets of implicit or explicit values, customs, rules, and policymakingmeasures which affect the state/Actor's behaviour in a specific issue area. This paper has analyzed the IMF's role through the lens of regime theory, with a focus on the compliance issues vis-à-vis Global South. As the global South, in this paper, Pakistan has been taken for example from Global South, often struggles with compliance and effectiveness of the lending program of the regimes to achieve their intended outcome. Based on the case study of Pakistan, an analysis demonstrates that the compliance issues are not merely a result of domestic challenges but are also shaped by the broader international regime in which the IMF operates.