International Tax

International taxation is the study or determination of tax on a person or business subject to the tax laws of different countries or the international aspects of an individual country's tax laws as the case may be. Governments usually limit the scope of their income taxation in some manner territorially or provide for offsets to taxation relating to extraterritorial income. The manner of limitation generally takes the form of a territorial, residential, or exclusionary system. Some governments have attempted to mitigate the differing limitations of each of these three broad systems by enacting a hybrid system with characteristics of two or more.

Many governments tax individuals and/or enterprises on income. Such systems of taxation vary widely, and there are no broad general rules. These variations create the potential for double taxation (where the same income is taxed by different countries) and no taxation (where income is not taxed by any country). Income tax systems may impose tax on local income only or on worldwide income. Generally, where worldwide income is taxed, reductions of tax or foreign credits are provided for taxes paid to other jurisdictions. Limits are almost universally imposed on such credits. Multinational corporations usually employ international tax specialists, a specialty among both lawyers and accountants, to decrease their worldwide tax liabilities.

With any system of taxation, it is possible to shift or recharacterize income in a manner that reduces taxation. Jurisdictions often impose rules relating to shifting income among commonly controlled parties, often referred to as transfer pricing rules. Residency-based systems are subject to taxpayer attempts to defer recognition of income through use of related parties. A few jurisdictions impose rules limiting such deferral ("anti-deferral" regimes). Deferral is also specifically authorized by some governments for particular social purposes or other grounds. Agreements among governments (treaties) often attempt to determine who should be entitled to tax what. Most tax treaties provide for at least a skeleton mechanism for resolution of disputes between the parties.

Countries that tax income generally use one of two systems: territorial or residential. In the territorial system, only local income – income from a source inside the country – is taxed. In the residential system, residents of the country are taxed on their worldwide (local and foreign) income, while nonresidents are taxed only on their local income. In addition, a very small number of countries, notably the United States, also tax their nonresident citizens on worldwide income.

Countries with a residential system of taxation usually allow deductions or credits for the tax that residents already pay to other countries on their foreign income. Many countries also sign tax treaties with each other to eliminate or reduce double taxation. In the case of corporate income tax, some countries allow an exclusion or deferment of specific items of foreign income from the base of taxation.

Tax Treaties

Tax treaties exist between many countries on a bilateral basis to prevent double taxation (taxes levied twice on the same income, profit, capital gain, inheritance or other item). In some countries they are also known as double taxation agreements, double tax treaties, or tax information exchange agreements (TIEA).

Most developed countries have a large number of tax treaties, while developing countries are less well represented in the worldwide tax treaty network. The United Kingdom has treaties with more than 110 countries and territories. The United States has treaties with 56 countries (as of February 2007). Tax treaties tend not to exist, or to be of limited application, when either party regards the other as a tax haven. There are a number of model tax treaties published by various national and international bodies, such as the United Nations and the OECD.

Treaties tend to provide reduced rates of taxation on dividends, interest, and royalties. They tend to impose limits on each treaty country in taxing business profits, permitting taxation only in the presence of a permanent establishment in the country. Treaties tend to impose limits on taxation of salaries and other income for performance of services. They also tend to have "tie breaker" clauses for resolving conflicts between residency rules. Nearly all treaties have at least skeletal mechanisms for resolving disputes, generally negotiated between the "competent authority" section of each country's taxing authority.

Credits for taxes of other jurisdictions

Systems that tax income earned outside the system's jurisdiction tend to provide for a unilateral credit or offset for taxes paid to other jurisdictions. Such other jurisdiction taxes are generally referred to within the system as "foreign" taxes. Tax treaties often require this credit. A credit for foreign taxes is subject to manipulation by planners if there are no limits, or weak limits, on such credit. Generally, the credit is at least limited to the tax within the system that the taxpayer would pay on income earned outside the jurisdiction. The credit may be limited by category of income, by other jurisdiction or country, based on an effective tax rate, or otherwise. Where the foreign tax credit is limited, such limitation may involve computation of taxable income from other jurisdictions. Such computations tend to rely heavily on the source of income and allocation of expense rules of the system.

Withholding tax

Many jurisdictions require persons paying amounts to nonresidents to collect tax due from a nonresident with respect to certain income by withholding such tax from such payments and remitting the tax to the government. Such levies are generally referred to as withholding taxes. These requirements are induced because of potential difficulties in collection of the tax from nonresidents. Withholding taxes are often imposed at rates differing from the prevailing income tax rates. Further, the rate of withholding may vary by type of income or type of recipient. Generally, withholding taxes are reduced or eliminated under income tax treaties (see below). Generally, withholding taxes are imposed on the gross amount of income, unreduced by expenses. Such taxation provides for great simplicity of administration but can also reduce the taxpayer's awareness of the amount of tax being collected.

Anti-deferral measures

Residency systems may provide that residents are not subject to tax on income outside the jurisdiction until that income is remitted to the jurisdiction. Taxpayers in such systems have significant incentives to shift income outside its borders. Depending on the rules of the system, the shifting may occur by changing the location of activities generating income or by shifting income to separate enterprises owned by the taxpayer. Most residency systems have avoided rules which permit deferring income from outside its borders without shifting it to a subsidiary enterprise due to the potential for manipulation of such rules. Where owners of an enterprise are taxed separately from the enterprise, portable income may be shifted from a taxpayer to a subsidiary enterprise to accomplish deferral or elimination of tax. Such systems tend to have rules to limit such deferral through controlled foreign corporations. Several different approaches have been used by countries for their anti-deferral rules.

In the United States, rules provides that U.S. shareholders of a Controlled Foreign Corporation (CFC) must include their shares of income or investment of E&P by the CFC in U.S. property. U.S. shareholders are U.S. persons owning 10% or more (after the application of complex attribution of ownership rules) of a foreign corporation. Such persons may include individuals, corporations, partnerships, trusts, estates, and other juridical persons. A CFC is a foreign corporation more than 50% owned by U.S. shareholders. This income includes several categories of portable income, including most investment income, certain resale income, and certain services income. Certain exceptions apply, including the exclusion from Subpart F income of CFC income subject to an effective foreign tax rate of 90% or more of the top U.S. tax rate.

The United Kingdom provides that a UK company is taxed currently on the income of its controlled subsidiary companies managed and controlled outside the UK which are subject to "low" foreign taxes. Low tax is determined as actual tax of less than three-fourths of the corresponding UK tax that would be due on the income determined under UK principles. Complexities arise in computing the corresponding UK tax. Further, there are certain exceptions which may permit deferral, including a "white list" of permitted countries and a 90% earnings distribution policy of the controlled company. Further, anti-deferral does not apply where there is no tax avoidance motive.

Rules in Germany provide that a German individual or company shareholder of a foreign corporation may be subject to current German tax on certain passive income earned by the foreign corporation. This provision applies if the foreign corporation is taxed at less than 25% of the passive income, as defined.[citation needed] Japan and some other countries have followed a "black list" approach, where income of subsidiaries in countries identified as tax havens is subject to current tax to the shareholder. Sweden has adopted a "white list" of countries in which subsidiaries may be organized so that the shareholder is not subject to current tax.

Transfer pricing

The setting of the amount of related party charges is commonly referred to as transfer pricing. Many jurisdictions have become sensitive to the potential for shifting profits with transfer pricing, and have adopted rules regulating setting or testing of prices or allowance of deductions or inclusion of income for related party transactions. Many jurisdictions have adopted broadly similar transfer pricing rules. The OECD has adopted (subject to specific country reservations) fairly comprehensive guidelines. These guidelines have been adopted with little modification by many countries. Notably, the U.S. and Canada have adopted rules which depart in some material respects from OECD guidelines, generally by providing more detailed rules.

Arm's length principle: It is a key concept of most transfer pricing rules, that prices charged between related enterprises should be those which would be charged between unrelated parties dealing at arm's length. Most sets of rules prescribe methods for testing whether prices charged should be considered to meet this standard. Such rules generally involve comparison of related party transactions to similar transactions of unrelated parties (comparable prices or transactions). Various surrogates for such transactions may be allowed. Most guidelines allow the following methods for testing prices: Comparable uncontrolled transaction prices, resale prices based on comparable markups, cost plus a markup, and an enterprise profitability method.

Tax avoidance

Tax avoidance schemes may take advantage of low or no-income tax countries known as tax havens. Corporations may choose to move their headquarters to a country with more favorable tax environments. In countries where movement has been restricted by legislation, it might be necessary to reincorporate into a low-tax company through reversing a merger with a foreign corporation ("inversion" similar to a reverse merger). In addition, transfer pricing may allow for "earnings stripping" as profits are attributed to subsidiaries in low-tax countries.

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