International taxation is the academic field and area of legal and economic research focused on the tax implications of cross-border activities and the interaction of different national tax systems. It investigates how income, assets, and transactions spanning multiple countries are taxed, addressing issues such as the allocation of taxing rights between states, the prevention of double taxation, and the analysis of international tax planning, avoidance, and evasion strategies. Key characteristics include the study of bilateral tax treaties, domestic tax laws impacting international flows, transfer pricing principles, and the influence of international organizations and cooperation on global tax policy, underscoring its significance for facilitating international trade and investment, ensuring equitable taxation, and addressing challenges like base erosion and profit shifting in an interconnected global economy.