Unit
- Source vs. Residence: Countries tax either based on where income is generated (source principle) or where the taxpayer is resident (residence principle). Most nations use a hybrid system, taxing residents on worldwide income and non-residents only on domestic-source income.
- Jurisdiction to Tax: International law recognizes a country's right to tax persons and activities within its territory, but this right is limited by tax treaties and customary international law. Economic nexus, physical presence, and legal domicile are common bases for jurisdiction.
- Double Taxation Conflict: When two countries claim taxing rights over the same income, double taxation occurs. This can be juridical double taxation (same taxpayer, same income taxed twice) or economic double taxation (same income taxed in the hands of different persons).
- Relief Mechanisms: Countries provide unilateral relief through foreign tax credits or exemption systems, and bilateral relief through tax treaties. The foreign tax credit allows resident taxpayers to offset foreign taxes paid against domestic tax liability, up to the domestic tax on that income.
- Permanent Establishment Concept: A fixed place of business through which a non-resident enterprise carries on business creates a taxable presence in the source country. This includes offices, factories, branches, and construction sites lasting more than a specified period.
- Withholding Taxes: Source countries often impose withholding taxes on cross-border payments such as dividends, interest, and royalties. Treaty rates typically reduce these withholdings, requiring careful analysis of applicable treaty provisions.
- Tax Neutrality: An efficient international tax system aims for capital export neutrality (taxing foreign income at domestic rates) or capital import neutrality (taxing all income in the host country uniformly). Policy choices affect cross-border investment flows.
- BEPS Concerns: Base erosion and profit shifting (BEPS) occurs when multinationals exploit gaps in tax rules to shift profits to low-tax jurisdictions. The OECD's BEPS Action Plan provides minimum standards and recommended practices to align taxation with value creation.
- Transfer Pricing Rules: Related party transactions must be priced at arm's length to prevent profit shifting. Tax authorities require detailed documentation and may adjust prices that deviate from market value. This principle affects cross-border supply chains, intellectual property licensing, and intercompany financing arrangements.
- Controlled Foreign Corporation Rules: CFC rules prevent taxpayers from deferring tax on passive income through foreign subsidiaries. These rules attribute certain low-taxed foreign income to the residence country parent, taxing it currently. Jurisdictions vary in their definitions of a CFC and the categories of income subject to these rules.
- Tax Treaty Interpretation: Tax treaties allocate taxing rights and reduce double taxation using the OECD Model Convention as a common framework. Key provisions include permanent establishment definition, business profits allocation, and mutual agreement procedure. The commentary provides authoritative guidance for interpreting treaty terms consistently across jurisdictions.
Financial Formula
Foreign Tax Credit Limitation
FTC Limitation = (Foreign Source Income / Worldwide Income) × Domestic Tax Liability
FTC Limitation = (Foreign Source Income / Worldwide Income) × Domestic Tax Liability
Where:
- Foreign Source Income: Taxable income from sources outside the taxpayer's country of residence.
- Worldwide Income: Total taxable income from all sources, both domestic and foreign.
- Domestic Tax Liability: The total tax owed before credits on worldwide income at the domestic rate.
- Result: The maximum foreign tax credit that can be claimed in the current year; excess credits may be carried forward or back per local rules.
Quick Revision
- The source principle taxes income where it is earned; the residence principle taxes based on the taxpayer's domicile.
- Double taxation can be relieved via foreign tax credits or exemption systems, often governed by tax treaties.
- Permanent establishment creates a taxable presence for non-resident enterprises in source countries.
- Withholding taxes on cross-border dividends, interest, and royalties are reduced by applicable treaty rates.
- BEPS risks drive policy reforms to ensure profits are taxed where economic activities occur.