Countries determine their jurisdiction over taxing income through a combination of domestic laws, international treaties, and principles of international tax law. The primary objective is to avoid double taxation while ensuring that income is appropriately taxed in a manner that aligns with the country's economic interests and sovereignty.
The determination of jurisdiction for taxing income is typically based on two key principles: residence-based taxation and source-based taxation. Residence-based taxation focuses on taxing individuals or entities based on their residency status, while source-based taxation focuses on taxing income generated within a country's borders.
Residence-based taxation is commonly used by countries to tax the worldwide income of their residents. Under this principle, individuals or entities are subject to tax in the country where they are considered residents for tax purposes. The determination of residency can vary across jurisdictions, but it generally depends on factors such as the duration of stay, permanent establishment, or the center of vital interests. Once residency is established, the country has the authority to tax the individual or entity's worldwide income, regardless of where it is earned.
Source-based taxation, on the other hand, allows countries to tax income generated within their borders, regardless of the taxpayer's residency status. This principle ensures that countries can tax income derived from economic activities taking place within their jurisdiction. Income subject to source-based taxation includes profits from business operations, rental income, royalties, and capital gains arising from the sale of assets located within the country.
To avoid double taxation and ensure fairness, countries often enter into bilateral or multilateral tax treaties. These treaties provide rules and guidelines for determining jurisdiction over taxing income when there is a potential overlap between residence and source-based taxation. Tax treaties typically allocate taxing rights between countries by providing specific criteria for determining residency, establishing rules for determining the source of income, and providing mechanisms for resolving disputes.
The criteria used to determine residency and the source of income may vary across tax treaties. However, common factors considered include the location of a person's permanent home, the center of vital interests, habitual abode, and the place of
incorporation or management for entities. These criteria help prevent situations where an individual or entity is subject to taxation in multiple jurisdictions for the same income.
In addition to domestic laws and tax treaties, countries also consider principles of international tax law when determining their jurisdiction over taxing income. These principles, such as the arm's length principle and the principle of fiscal sovereignty, provide
guidance on how countries should allocate taxing rights and ensure that income is not unduly shifted or artificially allocated to minimize tax liabilities.
The arm's length principle, for instance, requires that transactions between related parties be conducted as if they were between unrelated parties under similar circumstances. This principle helps prevent transfer pricing abuses and ensures that income is appropriately allocated between jurisdictions based on the economic substance of the transactions.
The principle of fiscal sovereignty acknowledges that each country has the right to determine its own tax policies and collect taxes within its jurisdiction. However, this principle also recognizes the need for cooperation and coordination among countries to avoid double taxation and promote fair and efficient taxation.
In conclusion, countries determine their jurisdiction over taxing income through a combination of domestic laws, tax treaties, and principles of international tax law. Residence-based taxation and source-based taxation are the primary principles used, with tax treaties providing rules for allocating taxing rights and avoiding double taxation. By considering factors such as residency, the source of income, and principles of international tax law, countries aim to strike a balance between taxing income within their borders and avoiding excessive tax burdens on individuals and entities.