The OECD Model refers to a framework developed by the Organisation for Economic Co-operation and Development to guide countries in creating tax treaties. These treaties help prevent double taxation and promote international trade and investment by clarifying tax rights between countries. The model provides guidelines on how to allocate taxing rights over various types of income, such as dividends, interest, and royalties. By following the OECD Model, countries can establish fair tax systems that encourage economic cooperation while ensuring that taxpayers are not taxed multiple times on the same income.