Government is saddled with the responsibility of being accountable to its citizenry through effective and efficient service delivery. In order to achieve this goal, government enacted the treasury single account (TSA) policy for mobilization of government revenue. The objective of this study is to assess the implication of adoption of TSA on accountability and transparency in the Nigerian public sector; with a view to find out if the policy is capable of promoting government accountability function. The study consist of all ministries, departments and agencies (MDAs) in the public service with sample size of ten (10) MDAs involved in revenue generation selected using purposive sampling technique. The hypotheses were tested using regression analysis (ANOVA). The finding of the study showed that, TSA significant positive impact on financial leakages, transparency and curb financial misappropriation. Hence, considering the findings of this study, it is recommended that government should continue to sustain the adoption of the policy and enact laws that will extend it to state and local governments.
Keywords: Accountability, Public Sector, Transparency, Treasury Single Account (TSA)