This paper discusses Islamic financial reporting system as practiced in many Islamic states for economic development. The issue of Islamic accounting among scholars provided evidence of economic benefits among the countries that have Islamic financial institutions (IFIs). The IFIs have been reported to be the fastest-growing sector in the world with a greater contribution of the global total bank assets. Although the Muslim population in Nigeria is large, the contribution or participation of Muslim towards IFIs is low compared to other countries like Bahrain, Saudi Arabia, Pakistan, and Syria. Furthermore, the accounting reporting in Nigeria is based on the International Financial Reporting Standards (IFRS) for all listed firms in Nigeria, which includes IFIs, even though, IFIs apply dual reporting. Therefore, the need for the mandatory adoption of Accounting and Auditing Organization for Islamic Financial Institutions (AAOIFI) standards is significant in Nigerian for IFIs to function better. Several countries have made it mandatory for IFIs to adopt AAOIFI instead of IFRS. The need for IFIs firms to report on their accounting system as an alternative to the conventional, will not only enhance transparency, improve reporting disclosures, greater Muslim investors, but will also improve Nigerian stock market. Policy makers, governments, and the regulator should make it mandatory for all IFIs to adopt AAOIFI for financial reporting.