Oluwaseun Adebisi Oriretan

Oluwaseun Adebisi Oriretan

Meet The Team

Oluwaseun Adebisi Oriretan is a Partner at ACTS Professional Services with responsibility for Client Relationship and Staff Welfare. She is a Fellow of the Institute of Chartered Accountants of Nigeria (ICAN), an Associate of the Chartered Institute of Taxation of Nigeria (CITN), and holds a B.Sc. in Accounting.

With over 17 years of progressive experience in professional services, she combines strong expertise in audit, tax, accounting, operations management, and people leadership. She is widely recognised for her client-focused approach, leadership excellence, and commitment to delivering measurable business value.

Professional Experience

Oluwaseun joined ACTS Professional Services in May 2009 as a Senior Associate and became a Partner in 2018. Since then, she has played a key leadership role in overseeing the firm’s operational activities and ensuring seamless delivery of management consulting, tax advisory, audit and assurance, and statutory compliance services.

She has delivered extensive compliance and advisory services covering Corporate Tax Compliance, PAYE Tax Administration for local and expatriate employees, Personal Income Tax Compliance for self-employed individuals, VAT Compliance, Withholding Tax Administration, and Tax Audit and Investigation Support Services.

Over the last eight years, her responsibilities have expanded to include client relationship management, staff welfare, team development, and operational efficiency across multiple service lines.

Leadership & Impact

Oluwaseun serves as a strategic bridge between senior leadership and frontline teams, ensuring that organisational objectives are effectively translated into excellent client service outcomes.

Her leadership style is built on trust, transparency, accountability, and people development. She is known for building strong long-term client relationships while improving internal collaboration, productivity, and service standards.

With a deep understanding of Nigerian tax laws, financial reporting standards, and business operations, she provides commercially practical and regulation-focused guidance to businesses across sectors.

Key Responsibilities

As Partner, Oluwaseun plans, organises, directs, and evaluates the operations of ACTS Professional Services to maintain service quality and client satisfaction.

Her responsibilities include:

• Developing operational policies and quality assurance systems
• Coordinating consulting, audit, and compliance engagements
• Managing payroll, PAYE compliance, and expatriate tax advisory services
• Overseeing business service accounts and client proposals
• Negotiating agreements and maintaining client portfolios
• Directing statutory compliance with LIRS, NRS, NSITF, NCDMB, and ITF
• Representing clients during tax audits, investigations, and reviews
• Leading audit engagements in line with IFRS and Nigerian GAAP
• Mentoring multidisciplinary professional teams
• Conducting due diligence reviews and tax health checks

Core Competencies

Business Operations:
Business Services Management · Service Delivery Optimisation · Quality Assurance · Process Improvement

Advisory & Compliance:
Management Consulting · Tax Planning · Regulatory Compliance · Audit & Assurance (IFRS/NGAAP)

Leadership & Client Relations:
Team Leadership · Mentoring · Client Relationship Management · Resource Planning · Stakeholder Liaison

Through technical excellence, strategic leadership, and a people-first mindset, Oluwaseun Adebisi Oriretan continues to strengthen the growth, efficiency, and client success of ACTS Professional Services.