Impact of Treasury Single Account Policy on Revenue Management in Federal Government Ministries in Abuja

The Treasury Single Account policy introduced in Nigeria in 2015 represents a significant public financial management reform aimed at consolidating government revenue and eliminating fragmented account structures across federal ministries, departments, and agencies. This study examines the impact of the Treasury Single Account policy on revenue management efficiency in selected federal government ministries headquartered in Abuja, Federal Capital Territory. A case study research design was adopted, with data collected from 145 finance and accounts officers across five ministries through structured questionnaires and secondary financial records review. Revenue management efficiency was measured by revenue remittance compliance rates, idle fund reduction, and internal audit query frequency. Descriptive statistics and paired sample t-tests were used to compare pre- and post-policy implementation metrics. Results indicated a statistically significant improvement in revenue remittance compliance after Treasury Single Account implementation (mean compliance rate: pre = 62.3%, post = 89.7%, t = -8.24, p < 0.01). Idle fund balances in commercial banks attributable to federal ministries declined by an estimated 74% in the two years following full policy rollout. Internal audit queries related to revenue misappropriation decreased by 48% post-implementation. The study concludes that the Treasury Single Account policy has substantially improved revenue management transparency and compliance in Abuja-based federal ministries. Recommendations include extending the policy architecture to state-level government agencies across all geopolitical zones. Keywords: Treasury Single Account, revenue management, federal ministries, public finance, Abuja FCT