Performance Assessment of Internal Revenue Services in State Tax Collections.


As Nigeria’s economy continues to evolve, state governments rely on tax revenue as a critical source of funding for public services, infrastructure development, and socioeconomic growth. The responsibility for tax collection lies with the Internal Revenue Services (IRS) of each state. Evaluating the performance of these state IRSs in tax collections is essential to identify strengths, weaknesses, and opportunities for improvement. In this article, we conduct a performance assessment of Internal Revenue Services in state tax collections in Nigeria to shed light on the efficiency and effectiveness of revenue generation.

  • Tax Collection Efficiency: This KPI measures the ability of state IRSs to collect taxes promptly and accurately. It evaluates the efficiency of tax collection processes and identifies any bottlenecks.
  • Voluntary Compliance: Voluntary compliance indicates the level of willingness of taxpayers to meet their tax obligations without enforcement actions. Higher voluntary compliance reflects effective taxpayer education and trust in the tax system.
  • Tax Base Growth: The growth of the tax base is a crucial factor in assessing the IRS’s efforts to expand the number of taxpayers, both individuals and businesses.
  • Revenue Diversification: This KPI examines whether the state IRS relies heavily on a specific tax or revenue source, or if it has diversified its revenue streams to reduce vulnerability.
  • Technology Integration: The extent to which state IRSs have integrated technology in their tax administration systems is crucial for efficient tax collection and data management.

Performance Assessment Findings

  • Tax Collection Efficiency: Lagos State emerged as a frontrunner in tax collection efficiency. The state’s IRS has streamlined processes, implemented digital payment systems, and reduced bureaucratic hurdles. However, some states showed room for improvement in optimizing their tax collection processes.
  • Voluntary Compliance: States with robust taxpayer education and outreach programs exhibited higher voluntary compliance rates. On the other hand, some states faced challenges in encouraging taxpayers to comply voluntarily due to limited awareness and complex tax regulations.
  • Tax Base Growth: While some states have successfully expanded their tax base through targeted efforts, others struggled to broaden their taxpayer population, leading to a narrower revenue base.
  • Revenue Diversification: States heavily reliant on a single revenue source, such as oil and gas, showed vulnerability to economic fluctuations. States with diversified revenue streams, like Kaduna, demonstrated more resilience in revenue generation.
  • Technology Integration: Lagos and a few other states excelled in embracing technology to enhance tax administration. However, some states still lagged in adopting modern digital platforms, affecting efficiency and data management.

Recommendations for Enhancing Performance

Based on the performance assessment findings, the following recommendations are proposed to improve the performance of state IRSs in tax collections:

  • Enhance Taxpayer Education: Investing in comprehensive taxpayer education programs to raise awareness about tax obligations and benefits can foster voluntary compliance.
  • Streamline Tax Collection Processes: Simplifying tax collection procedures and reducing bureaucratic obstacles can improve efficiency and taxpayer experience.
  • Embrace Technology: States should prioritize the integration of modern technology in tax administration systems to enhance data management and streamline processes.
  • Diversify Revenue Sources: States overly reliant on specific sectors should explore opportunities to diversify their revenue streams to mitigate economic risks.
  • Promote Cross-State Collaboration: Sharing best practices and knowledge among state IRSs can facilitate mutual growth and improved performance.


The performance assessment of Internal Revenue Services in state tax collections provides valuable insights into the efficiency and effectiveness of revenue generation across Nigerian states. By leveraging the findings and implementing the recommended strategies, state IRSs can optimize tax collection processes, boost voluntary compliance, and create a robust fiscal environment for sustained economic growth and development. As tax revenue continues to play a pivotal role in Nigeria’s progress, continuous assessment and improvement are vital for the nation’s prosperity.

For professional advice on Accountancy, Transfer Pricing, Tax, Assurance, Outsourcing, online accounting support, Company Registration, and CAC matters, please contact Sunmola David & CO (Chartered Accountants & Tax Practitioners) at Lagos, Ogun state Nigeria offices, You can also reach us via WhatsApp at +2348038460036.