In today's interconnected world, understanding international taxation is crucial for individuals and businesses operating across borders. The complex web of global tax regulations, treaties, and varying national laws can significantly impact your financial obligations and opportunities.

Global tax residency and domicile principles

Tax residency and domicile are fundamental concepts in international taxation that determine where an individual or entity is liable to pay taxes. Tax residency is typically based on physical presence, while domicile relates to an individual's permanent home or intention to reside indefinitely in a particular jurisdiction.

Most countries employ one of two systems to determine tax liability: residence-based taxation or territorial taxation. Under a residence-based system, residents are taxed on their worldwide income, while non-residents are only taxed on income sourced within the country. In contrast, territorial systems tax only income derived from sources within the country's borders, regardless of the taxpayer's residency status.

It's important to note that residency rules can vary significantly between countries. For example, the United States uses a combination of citizenship-based and residence-based taxation, requiring U.S. citizens and green card holders to report their global income regardless of where they reside. On the other hand, many European countries primarily use residence-based systems.

Double taxation treaties and foreign tax credits

Double taxation occurs when the same income is taxed by two or more jurisdictions. To mitigate this issue, countries often enter into bilateral tax treaties, also known as Double Taxation Agreements (DTAs). These treaties aim to prevent double taxation and provide clarity on which country has the right to tax specific types of income.

OECD model tax convention on income and capital

The Organization for Economic Cooperation and Development (OECD) has developed a Model Tax Convention that serves as a template for many bilateral tax treaties. This model provides a framework for allocating taxing rights between countries and includes provisions for various types of income, such as business profits, dividends, interest, and royalties.

Key features of the OECD Model Tax Convention include:

  • Definition of residency for tax purposes
  • Methods for eliminating double taxation
  • Rules for taxing specific types of income
  • Provisions for exchange of information between tax authorities

Unilateral foreign tax credit systems

In addition to tax treaties, many countries offer unilateral foreign tax credits to prevent double taxation. These credits allow taxpayers to offset taxes paid to foreign jurisdictions against their domestic tax liability. The specific rules and limitations for foreign tax credits vary by country, but they generally aim to ensure that the total tax paid does not exceed the higher of the two countries' tax rates.

Treaty shopping and limitation on benefits clauses

Treaty shopping occurs when taxpayers structure their affairs to take advantage of more favorable tax treaties between countries where they don't have substantial economic presence. To combat this practice, many modern tax treaties include Limitation on Benefits (LOB) clauses. These provisions restrict treaty benefits to residents with a genuine economic connection to the contracting states.

Mutual agreement procedures (MAP) for dispute resolution

When disagreements arise between tax authorities or between taxpayers and tax authorities regarding the interpretation or application of tax treaties, the Mutual Agreement Procedure (MAP) provides a mechanism for resolution. This process allows competent authorities from the involved countries to negotiate and reach a mutually acceptable solution, often preventing double taxation or unintended non-taxation.

Expatriate taxation and foreign earned income exclusion

Expatriates face unique tax challenges when working or living abroad. Many countries have special tax regimes or provisions to address the complexities of cross-border employment and residency.

US citizens abroad: FEIE and housing exclusion

The United States offers its citizens working abroad the Foreign Earned Income Exclusion (FEIE) and Foreign Housing Exclusion. These provisions allow qualifying U.S. expatriates to exclude a portion of their foreign earned income and housing costs from U.S. taxation. For the 2023 tax year, the maximum FEIE amount is $120,000, subject to annual inflation adjustments.

To qualify for the FEIE, expatriates must meet either the Physical Presence Test or the Bona Fide Residence Test. The Physical Presence Test requires individuals to be physically present in a foreign country for at least 330 full days during a 12-month period, while the Bona Fide Residence Test requires establishing residency in a foreign country for an uninterrupted period that includes an entire tax year.

UK's resident non-domiciled (RND) tax regime

The United Kingdom offers a unique tax regime for Resident Non-Domiciled (RND) individuals. This system allows eligible residents who are not domiciled in the UK to opt for the "remittance basis" of taxation. Under this regime, RNDs are only taxed on their UK-source income and gains, as well as any foreign income or gains they bring (remit) to the UK.

However, long-term UK residents claiming RND status may be subject to an annual charge, known as the Remittance Basis Charge, which can range from £30,000 to £60,000 depending on the length of UK residency.

Special expatriate tax regimes: Netherlands' 30% ruling

Some countries offer special tax incentives to attract skilled foreign workers. The Netherlands, for example, has the "30% ruling" for qualifying expatriates. This scheme allows employers to provide a tax-free allowance of up to 30% of the employee's salary, effectively reducing the expatriate's taxable income.

To qualify for the 30% ruling, expatriates must:

  • Have specific expertise that is scarce or unavailable in the Dutch labor market
  • Be recruited from abroad or seconded to a Dutch employer
  • Meet a minimum taxable salary threshold (€41,954 for 2023, with some exceptions)

Transfer pricing and profit allocation in multinational enterprises

Transfer pricing is a critical aspect of international taxation for multinational enterprises (MNEs). It refers to the pricing of transactions between related entities within an MNE group. Tax authorities scrutinize these transactions to ensure that profits are allocated fairly among jurisdictions and not artificially shifted to low-tax countries.

The OECD Transfer Pricing Guidelines provide a framework for applying the arm's length principle, which states that the prices charged between related parties should be comparable to those that would be charged between independent entities in similar circumstances. Common transfer pricing methods include:

  • Comparable Uncontrolled Price (CUP) method
  • Resale Price method
  • Cost Plus method
  • Transactional Net Margin method (TNMM)
  • Profit Split method

MNEs must carefully document their transfer pricing policies and prepare transfer pricing reports to support their position in case of tax authority audits. Many countries have introduced specific transfer pricing documentation requirements, including Country-by-Country Reporting (CbCR) for large MNEs.

Controlled foreign corporation (CFC) rules and GILTI

Controlled Foreign Corporation (CFC) rules are anti-avoidance measures designed to prevent taxpayers from deferring or avoiding domestic taxation by holding passive income-generating assets in foreign subsidiaries. These rules typically allow the home country to tax certain types of income earned by a CFC, even if that income has not been distributed to the parent company or individual shareholders.

Subpart F income and US CFC regulations

The United States has some of the most comprehensive CFC rules, known as Subpart F. Under these regulations, certain types of income earned by CFCs are deemed to be distributed to U.S. shareholders and taxed currently, regardless of whether the income is actually repatriated. Subpart F income typically includes:

  • Foreign personal holding company income (e.g., dividends, interest, royalties)
  • Foreign base company sales income
  • Foreign base company services income

UK's diverted profits tax and CFC charge

The United Kingdom has implemented its own CFC regime, which includes a CFC charge on profits artificially diverted from the UK. Additionally, the UK introduced the Diverted Profits Tax (DPT) in 2015, which imposes a 25% tax on profits deemed to be artificially diverted from the UK through contrived arrangements.

OECD BEPS action 3: strengthening CFC rules

As part of its Base Erosion and Profit Shifting (BEPS) project, the OECD has provided recommendations for designing effective CFC rules. Action 3 of the BEPS project outlines best practices for CFC regulations, including:

  • Definition of a CFC
  • CFC exemptions and threshold requirements
  • Definition of CFC income
  • Rules for computing and attributing income
  • Rules to prevent or eliminate double taxation

Global intangible low-taxed income (GILTI) provisions

The U.S. Tax Cuts and Jobs Act of 2017 introduced the Global Intangible Low-Taxed Income (GILTI) provisions as an expansion of the CFC rules. GILTI targets income earned by CFCs that exceeds a deemed return on tangible assets. U.S. shareholders of CFCs are required to include their pro-rata share of GILTI in their taxable income, subject to certain deductions and foreign tax credits.

Digital economy taxation and pillar One/Two initiatives

The rise of the digital economy has presented new challenges for international taxation, as traditional tax rules struggle to capture value creation in digital business models. Many countries have introduced or proposed digital services taxes (DSTs) as interim measures, while global efforts are underway to develop a more comprehensive solution.

OECD's two-pillar approach to address tax challenges

The OECD/G20 Inclusive Framework on BEPS has developed a two-pillar approach to address the tax challenges arising from the digitalization of the economy:

Pillar One aims to reallocate taxing rights to market jurisdictions where users or consumers are located, regardless of physical presence. It introduces new nexus and profit allocation rules for large multinational enterprises.

Pillar Two seeks to ensure that large multinational enterprises pay a minimum level of tax regardless of where they are headquartered or the jurisdictions in which they operate.

Digital services taxes (DSTs) and unilateral measures

In the absence of a global consensus, several countries have implemented or proposed unilateral digital services taxes. These taxes typically target large digital companies based on their revenue from specific digital services within the jurisdiction. Examples include:

  • France's 3% tax on digital services revenue
  • UK's 2% tax on revenues from search engines, social media platforms, and online marketplaces
  • Italy's 3% levy on digital services revenue

However, these unilateral measures have faced criticism and threats of trade retaliation, highlighting the need for a coordinated global approach.

Base erosion and profit shifting (BEPS) 2.0 framework

The BEPS 2.0 framework, which encompasses the Two-Pillar approach, represents the latest effort to address the tax challenges of the digital economy and combat aggressive tax planning by multinational enterprises. Key aspects of the framework include:

  • New nexus rules based on significant economic presence
  • Formulary apportionment of residual profits
  • Global minimum tax rate
  • Improved dispute resolution mechanisms

As countries work towards implementing these new rules, businesses operating internationally must stay informed about the evolving landscape of digital taxation and prepare for potential changes in their tax obligations and compliance requirements.

Navigating the complexities of international taxation requires a thorough understanding of various national laws, bilateral treaties, and global initiatives. As the digital economy continues to evolve and governments seek to address tax challenges, staying informed about the latest developments in international taxation is crucial for individuals and businesses alike. By leveraging expert knowledge and staying compliant with applicable regulations, taxpayers can optimize their global tax positions while minimizing risks and uncertainties in an increasingly interconnected world.