The name of the Firm was coined out of the first letter of the surnames of each of the founding Partners. S-Smith, I-Ighodalo, A-Adewale (a retired partner), O-Odiachi.

It is an independent Nigerian professional services firm which boasts a crop of seasoned professionals with local and international experience positioned to providing excellent financial advisory services and business assurance. Specifically, the Firm is managed by Alumni of KPMG, PWC, EY, PKF Professional Services and Grant Thornton.

With a professional staff strength of over 100 highly qualified and dedicated personnel, we pride ourselves as being Nigeria?s largest indigenous professional services firm.

Our professional competence has seen us audited and consulted for various sectors of the economy such as Engineering, Oil and Gas, Finance, Public Sector, Telecommunications and Manufacturing amongst others.

We pride ourselves in always being at a high level of responsiveness and commitment to our client?s needs. This distinguishes us from our competitors and also guarantees excellent results for repeat business.

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SIAO is an independent Nigerian professional services firm, providing Audit & Assurance, Accounting, Tax, International Financial Reporting Standards Advisory, Human Resource, and Financial Advisory Services.

BOI House,
Plot 256, Zone A
Off Herbert Macaulay Way
Behind Unity Bank Building
Central Business District
Abuja

Tel: +23492912462,
Tel: +23492912463

18b Olu Holloway Road,
(Former Temple Road),
Off Kingsway Road,
Ikoyi,
Lagos.

Tel- +234(802)1810043