1. Theoretical Foundations of Corporate Income Taxation Corporate income taxation occupies a central position in the fiscal architecture of the Federal Republic of Nigeria. In classical economic theory, a corporation is a legal entity distinct from the human shareholders who contribute its equity capital, established under the landmark common law doctrine of Salomon v. Salomon & Co. Ltd and codifi...

1. Theoretical Foundations of Corporate Turnover Categorization The structure of corporate tax rates in developing economies must balance fiscal revenue mobilization against the necessity of stimulating entrepreneurship, industrial innovation, and business formalization. Historically in Nigeria, the Companies Income Tax Act (CITA) levied a uniform, flat tax rate of 30% across all corporate entitie...

1. Theoretical Foundations of Corporate Tax Residence and Nexus The determination of corporate tax jurisdiction rests upon two international pillars: the Residence Principle (attaching tax liability to an entity based on its incorporation or territorial affiliation) and the Source Principle (attaching tax liability to economic activities and value generated within a sovereign territory). Under the...

1. Theoretical Foundations of Corporate Tax Administration and Self-Assessment The transition from administrative assessment (where tax inspectors manually calculate corporate liabilities) to the Self-Assessment System represents one of the most profound modernizations in corporate fiscal governance. Under the self-assessment doctrine, a company is presumed to possess the best knowledge of its fin...