Osun Internal Revenue Service

The Imole Team

Stewardship Report of Osun Internal Revenue Service (OIRS) Under the Tenure of His Excellency, Governor Ademola Adeleke (Nov 2022 – Dec 2025)

Introduction

The Osun Internal Revenue Service (OIRS) has experienced a profound transformation since Governor Ademola Adeleke assumed office. Guided by the strategic leadership of Hon. Kamoru Ajisafe (Special Adviser on Revenue) and Alhaji Solanke-Hamzat (Acting Executive Chairman), the agency has been repositioned to drive sustainable revenue generation, improved taxpayer compliance, and modern, transparent tax administration.

Focus Areas: Innovation, Accountability, Service Delivery, Tax Harmonization, Digitization, Elimination of Revenue Leakages — all achieved without introducing new taxes.

Key Revenue Performance

  • Pre-2023 baseline: ₦24.47 billion
  • IGR in 2023: ₦27.72 billion (≈13.3% growth)
  • IGR in 2024: ₦54.7 billion (97.3% increase)

Drivers of Growth: Harmonization of taxes, automation (78%), voluntary compliance, blocking leakages (no cash collection, verifiable receipts), and citizen-friendly approaches.

Osun IGR in National Context (2024)

Osun ranked 15th out of 36 States with ₦54.77 billion, ahead of several peers while trailing Lagos, Rivers, FCT, Ogun, and Enugu.

Fiscal Transparency

In Q3 2025, Osun achieved a 100% score in BudgIT Fiscal Transparency League Table, joining only 10 other states. Domestic debt reduced from ₦148.37 billion (Dec 2022) to ₦83.32 billion (Q1 2025), a 43.84% reduction.

Staff Welfare and Capacity Development

OIRS emphasized human capital development through training in tax administration, data analysis, customer relations, cryptocurrency taxation, and digital competencies. Staff attended workshops by JRB, CITN, ICAN, ANAN, and others. Welfare initiatives included salary increments for dispatch riders, boosting morale and loyalty.

Infrastructure Upgrade and Operational Efficiency

  • Deployment of integrated revenue collection and digital payment platforms
  • Harmonization of levies to ease compliance
  • Upgrades to office spaces with modern equipment
  • Acquisition/refurbishment of vehicles and motorcycles for field operations

Stakeholder Engagement and Public Trust

OIRS built public confidence through outreach, forums, retreats, and weekly radio/TV programs. Governor Adeleke emphasized fairness, voluntary compliance, and linking revenue growth to development projects.

Key Achievements at a Glance

  • Revenue Transformation: Growth from ₦24.47bn → ₦27.72bn → ₦54.7bn (97.3% surge, no new taxes, digitized collections)
  • Impact Metrics: 100% Fiscal Transparency Score (BudgIT Q3 2025), 43.8% Domestic Debt Reduction, Staff Training Programs, Digital Platforms Deployed

Conclusion and Outlook

The stewardship of OIRS under Governor Adeleke and Acting Chairman Alhaji Solanke-Hamzat marks a new chapter of efficiency, transparency, and sustainable growth. Looking ahead, OIRS is committed to deepening tax reforms, advancing full digitization, and enhancing service delivery to support Osun State’s fiscal independence and public welfare.