Member of ICAN Public Practice Faculty

Assisting you in making
impactful decisions.

A. O. Shamusideen & Co (AOS) provides audit and assurance, tax advisory, and consulting solutions that help organizations navigate statutory and regulatory obligations, strengthen risk management to achieve sustainable growth.

Making complex fiscal and regulatory requirements manageable for you.

AOS is a firm of chartered accountants with requisite knowledge, experience, and integrity who are committed to providing professional services to businesses in the areas of statutory, regulatory, and operational compliance.

Why AOS?

  • 35+ Years Combined Experience
  • Business Compliance Solution Providers
  • State-of-the-Art Infrastructure & Skilled Teams
  • Financial Reporting Specialists
  • Independent & Ethical Assurance
Our Services

Rendering solutions that enhance business values.

We combine technical expertise, regulatory insights, and sectorial experience to deliver high-quality professional services across public and private enterprises. These services help organizations to manage risk, optimize costs, and ensure generation of values that count.

Audit & Assurance
  • Statutory audit
  • Internal audit services
  • Investigation and due diligence examinations
  • ICFR implementation & assessment
  • Corporate governance audit
Tax Advisory
  • Tax planning & management
  • Tax compliance and reporting services
  • Transactional tax advisory services
Consultancy Services
  • Management consulting
  • Human resources management
  • Fiscal and regulatory support services
  • Accounting and reporting supports
Secretarial Services
  • Corporate governance support services
  • Business registration & post-incorporation filings
  • Gateway services

↗ View full service details

Join us

We recruit talented individuals and empower them to grow professionally. Discover exciting career opportunities with AOS.

Intern

Internship and training opportunities for individuals looking to begin a career in professional services.

Join AOS professionals
Career Image