Tax laws are crucial for understanding the financial landscape. These laws are classified into domestic and international sources. Primary legislation, such as acts or laws, and secondary legislation, like regulations and circulars, fall under the former category. The latter comprises bilateral or multilateral treaties. The OECD model tax treaty and its commentary are key resources for interpreting these treaties. The UN model is another significant model to refer to. These sources play a pivotal role in shaping tax laws.
