Foundations of Taxation: Types, Theory, Policy

Definition and purposes of taxation

Taxation is defined as a mandatory financial charge or levy imposed by a government on individuals or legal entities to support public spending and expenditures, and to influence or regulate economic activity (for example, by reducing negative externalities). In economic terms, taxation transfers wealth from households or businesses to the government, which can affect growth and welfare—sometimes increasing welfare through fiscal effects, and sometimes decreasing it through excess burden. The purposes of taxation extend beyond raising revenue. Tax systems can also be used to shape public policy, such as influencing the distribution of wealth, subsidizing particular groups or industries, and addressing costs associated with public goods or negative side effects (e.g., environmental harm). Taxation is also recognized as a core sovereign function of the state, tied to public authority rather than a private transaction, and its design and administration are constrained by a country’s fiscal and legal capacity. Historically, taxation has taken many forms (e.g., corvée labor and tithes in ancient contexts), and modern systems classify taxes in broad categories such as income taxes, social-security contributions, payroll/workforce taxes, property taxes, and taxes on goods and services. International organizations like the OECD provide classification frameworks to compare and analyze tax structures across countries.

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Tax compliance and taxpayer behavior

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