A. O. Shamusideen & Co (AOS) is a firm of Public Accountants who are well positioned to deliver audit, tax, and advisory services. We provide tailored-solutions that help businesses meet their operational, financial and regulatory needs efficiently.
A. O. Shamusideen & Co (AOS) is a firm of Public Accountants who are well positioned to deliver audit, tax, and advisory services. We provide tailored-solutions that help businesses meet their operational, financial and regulatory needs efficiently.
We are finance professionals with decades of combined experience across audit, tax, advisory, and regulatory environments. Our approach is to work closely with businesses to understand their unique needs and provide practical, value-driven solutions. We relied on strong professional affiliations and continuous development to deliver quality services that support sustainable growth and compliance within a reasonable cost.
To be a leading professional services firm recognized for excellence, integrity, and innovative solutions that create lasting value for our clients and stakeholders.
To provide high-quality services through a customer-centeric approach, leveraging expertise, technology, and best practices to achieve measurable and sustainable results.
AOS’s service delivery is influenced by the under listed principles and values shared among the Firm’s team members.
The values are
held with utmost esteem by the Firm and have helped us earn our clients’ trust and respect over the years.
We collaborate with our clients in all our engagements, work with them as a team to understand their challenges and develop workable solutions together, to create long lasting mutual benefiting business relationship.
We protect our clients' interests through transparent processes, the highest ethical standards, and strict confidentiality — while remaining fully independent to deliver unbiased opinions in every circumstance.
We are passionate about our clients' success. Operating with utmost dedication and commitment, we focus on delivery and execution — performing not just to satisfy, but to surpass expectations.
We continuously focus on improving the quality of services by benchmarking with best practices. We inculcate excellence to our delivery processes, and add positive value to our client’s business.
We support organizations across public and private sectors, providing industry-aligned audit, tax, and advisory solutions that help clients stay ahead of regulatory requirements, strengthen risk management, and drive sustainable growth.
Industries
INDUSTRY
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Partners that trust our expertise
Our management team brings together decades of experience and strategic expertise to lead the firm towards sustainable growth, innovation and long-term success.
A Fellow of the Institute of Chartered Accountants of Nigeria (ICAN). He leads the firm with over two decades of financial leadership, building an internationally recognised team with expertise in assurance, tax advisory and regulatory compliance eco-space.
A qualified Chartered Accountant with over thirty years accumulated extensive professional experience in financial reporting, treasury management, budgetting. She holds doctorate degree in Public Sector Accounting with strong biased for internal controls and process improvements. Dr. Olonisakin is the assurance director of the Firm. She is in charge of public sector engagement and quality delivery assurance.
Mr. Adewale S. Odedina
B.sc, MBA, FCCA, FCA, FCTI
At A. O. Shamusideen & Co (AOS), our purpose is anchored in integrity, excellence and partnership. Every engagement reflects our commitment to independence, professional rigor and long-term client value. We do not merely deliver services — we build enduring trust.
