Territorial taxation is a system in which a country taxes only the income earned inside its own borders and leaves foreign-source income outside the domestic tax base. About half of OECD member countries operate territorial or participation-exemption systems for corporate income, and the United States moved to a hybrid version of this approach in 2017. The core idea is simple, but the mechanics are not: modern territorial systems come bundled with ownership thresholds, holding periods, and anti-abuse rules that pull certain foreign earnings back into the domestic tax base even when the headline exemption seems to apply.
Territorial Systems Compared to Worldwide Systems
A worldwide system taxes residents and domestic corporations on income earned anywhere on the planet. The taxpayer reports foreign accounts, foreign earnings, and offshore profits, then claims foreign tax credits to avoid paying twice on the same dollar. A territorial system treats the border as a hard line. Foreign profits stay outside the reach of the home tax office, and a company can reinvest those earnings abroad without a second layer of domestic tax when the money moves.
The United States historically operated a worldwide system and shifted toward a hybrid territorial model through the Tax Cuts and Jobs Act of 2017. Before that law, a US corporation that brought foreign subsidiary dividends home paid the full corporate rate on them, which was 35% at the time.1Internal Revenue Service. REG-114540-18 – Amount Determined Under Section 956 for Corporate United States Shareholders The 2017 law created a participation exemption that allows qualifying dividends to come home tax-free, while simultaneously expanding taxation of income accumulating inside foreign subsidiaries. The word “hybrid” carries real weight. The system looks territorial for dividends and retains worldwide reach for other categories of foreign earnings.
What Foreign Income a Territorial System Typically Exempts
Three categories of foreign-source income appear consistently in territorial regimes.
Foreign-source dividends. Profits a parent company receives from its foreign subsidiary generally enter the home country tax-free or at a sharply reduced rate, provided ownership and holding-period requirements are met.
Permanent establishment profits. Income a company earns through a physical branch, plant, or other fixed place of business in another country is typically exempt at home because the host country already taxes it.
Capital gains from subsidiary sales. When a domestic company sells its stake in a foreign subsidiary, the gain is often treated as foreign-source and left untaxed at home, which supports cross-border investment flows.
These exemptions generally apply only to active business income. Passive income such as interest from a foreign bank account, royalties from a trademark licensed overseas, or portfolio investment returns usually remains taxable at home. That distinction is the crack through which anti-abuse rules enter.
The US Participation Exemption Under Section 245A
Section 245A is the centerpiece of the US territorial shift. It allows a domestic C corporation that qualifies as a US shareholder to deduct the entire foreign-source portion of dividends received from a specified 10-percent owned foreign corporation. Qualifying dividends arrive tax-free at the federal level. The deduction is available only to domestic C corporations; real estate investment trusts and regulated investment companies do not qualify.2Internal Revenue Service. Section 245A Dividends Received Deduction Overview
Two conditions gate the deduction. First, the domestic corporation must own at least 10% of the foreign corporation’s voting power or value.3Office of the Law Revision Counsel. 26 USC 245A – Deduction for Foreign Source-Portion of Dividends Received by Domestic Corporations From Specified 10-Percent Owned Foreign Corporations Second, the shareholder must hold the stock for at least 365 days within a 731-day window centered on the ex-dividend date.4Office of the Law Revision Counsel. 26 USC 246 – Rules Applying to Deductions for Dividends Received Miss the holding period and the dividend becomes fully taxable.
The 10% threshold is not a US quirk. Many OECD countries with participation exemptions require similar ownership levels, and several impose minimum holding periods of 12 to 24 months. The shared policy is that territorial benefits should flow to companies with real operational stakes in their foreign subsidiaries, not to short-term investors.
Anti-Abuse Rules That Limit the Exemption
A pure territorial system creates an obvious incentive: shift profits to a low-tax country, keep them there, pay nothing at home. Every major economy with territorial features has built guardrails. The US has three.
Subpart F Income
Subpart F has been in the tax code since the 1960s and targets specific types of passive or mobile income earned by controlled foreign corporations. When a CFC earns Subpart F income, a US shareholder with at least a 10% stake must include their share in gross income immediately, whether or not the CFC actually distributes the money.5eCFR. 26 CFR 1.952-1 – Subpart F Income Defined
The largest Subpart F category, foreign base company income, has three subcategories: foreign personal holding company income (the CFC’s dividends, interest, rents, and royalties), foreign base company sales income (profits from related-party transactions where the goods are neither made nor sold for use in the CFC’s home country), and foreign base company services income (fees for services performed outside the CFC’s country of organization for a related party).6Office of the Law Revision Counsel. 26 USC 954 – Foreign Base Company Income A US parent cannot park passive investment income in a Caribbean subsidiary and call it exempt foreign earnings.
Net CFC Tested Income
The regime originally called global intangible low-taxed income, created by the 2017 law, was renamed “net CFC tested income” (NCTI) effective January 1, 2026. The mechanics are the same. A US shareholder of a controlled foreign corporation must include in gross income a calculated amount representing the CFC’s earnings above a routine return on its tangible business assets.7Office of the Law Revision Counsel. 26 USC 951A – Net CFC Tested Income Included in Gross Income of United States Shareholders
NCTI reaches further than Subpart F because it captures active business earnings, not just passive income. Domestic C corporations can offset some of the inclusion with a 40% deduction under Section 250, which brings the effective US tax rate on NCTI to roughly 12.6% at the 21% corporate rate.8Office of the Law Revision Counsel. 26 USC 250 – Deduction for Foreign-Derived Intangible Income and Net CFC Tested Income Foreign tax credits can push the number lower, but the floor is real. US shareholders owe something on low-taxed foreign profits regardless of whether the cash comes home.
The Base Erosion and Anti-Abuse Tax
The BEAT addresses a different pressure point: large corporations that shrink their US taxable income by making deductible payments to foreign related parties. If a US subsidiary pays inflated management fees or royalties to its foreign parent, those deductions erode the US tax base. The BEAT operates as a minimum tax that recalculates liability by adding those payments back. The rate is 10.5%, with an extra percentage point for certain banks and securities dealers.9Office of the Law Revision Counsel. 26 USC 59A – Tax on Base Erosion Payments of Taxpayers With Substantial Gross Receipts
The BEAT applies only to corporations with average annual gross receipts of at least $500 million over the preceding three tax years.9Office of the Law Revision Counsel. 26 USC 59A – Tax on Base Erosion Payments of Taxpayers With Substantial Gross Receipts Small and mid-size companies fall well below the threshold. Large multinationals face a meaningful constraint on cross-border deduction strategies.
Transfer Pricing as the Enforcement Backbone
Transfer pricing is how companies set the prices they charge each other for goods, services, and intellectual property that cross borders inside the same corporate group. Because a US parent and its foreign subsidiary are not truly bargaining, Section 482 gives the IRS broad authority to reallocate income and deductions between related taxpayers whenever the reported prices do not reflect what unrelated parties would have agreed to.10Office of the Law Revision Counsel. 26 USC 482 – Allocation of Income and Deductions Among Taxpayers
The governing test is the arm’s-length standard: a transaction between related parties must produce results consistent with what unrelated parties would have reached under the same circumstances.11eCFR. 26 CFR 1.482-1 – Allocation of Income and Deductions Among Taxpayers No single method is required. The regulations call for whichever method gives the most reliable measure under the specific facts, and the analysis usually turns on comparing the controlled transaction to similar deals between unrelated companies, adjusting for differences in risk, market conditions, and contractual terms.
Transfer pricing is where most large international tax disputes start. Repricing an intellectual property license by a few percentage points can shift billions in taxable income between countries. Section 482 also states that income from intangible property transfers must be “commensurate with the income attributable to the intangible,” a standard that gives the IRS strong leverage on audit.10Office of the Law Revision Counsel. 26 USC 482 – Allocation of Income and Deductions Among Taxpayers
The 15% Global Minimum Tax
The OECD’s Pillar Two framework introduces a 15% global minimum tax on the profits of multinational enterprises with consolidated revenue above €750 million. If a group’s effective tax rate in any jurisdiction falls below 15%, a top-up tax closes the gap. The rule directly limits territorial exemptions. Parking profits in a zero-tax jurisdiction no longer produces zero global tax.
Pillar Two includes a qualified domestic minimum top-up tax that lets a country collect the top-up itself rather than surrender that revenue to the parent’s home jurisdiction. A country that adopts a QDMTT effectively caps its own tax incentives at 15% for in-scope multinationals while keeping the revenue. Dozens of jurisdictions have enacted Pillar Two legislation, including most EU member states, the United Kingdom, Canada, Australia, and several countries that previously had no corporate income tax.
The United States has not enacted Pillar Two directly. Its existing anti-abuse provisions, particularly NCTI at a 12.6% effective rate and the BEAT at 10.5%, play a similar role. Whether they qualify as equivalent under the OECD framework is contested, and the gap between the US effective rate on foreign earnings and the 15% global minimum creates ongoing uncertainty for multinationals with US parents.
How Individuals Fit In
Corporate territorial exemptions generally do not extend to individuals. Most countries tax residents on worldwide income, and the United States goes further by taxing US citizens on global income regardless of where they live. Two mechanisms soften the double-tax exposure.
The foreign earned income exclusion lets US citizens and residents who live and work abroad exclude up to $132,900 of foreign earned income for 2026, with a separate housing cost exclusion of up to $39,870 that varies by location.12Internal Revenue Service. Figuring the Foreign Earned Income Exclusion The taxpayer’s tax home must be in a foreign country, and the taxpayer must meet either the bona fide residence test (a genuine resident of a foreign country for an entire tax year) or the physical presence test (330 full days in a foreign country during any 12 consecutive months).13Office of the Law Revision Counsel. 26 USC 911 – Citizens or Residents of the United States Living Abroad The exclusion covers earned income such as wages and self-employment. Investment income, pensions, and payments from the US government do not qualify.
The foreign tax credit under Section 901 handles income beyond or outside the exclusion. It offsets US tax by the amount of income taxes paid to a foreign government. Taxpayers generally file Form 1116, with an exception for those whose total creditable foreign taxes are $300 or less ($600 on a joint return) and whose foreign income is passive category income reported on standard payee statements. The credit cannot exceed the US tax attributable to the foreign income, so it produces no refund for excess foreign taxes, though unused credits can carry forward. Penalties, interest, taxes paid to sanctioned countries, and taxes on dividends where the holding period is not met are not creditable.14Internal Revenue Service. Instructions for Form 1116
Reporting Obligations That Come With Foreign Income
Territorial benefits come with disclosure duties, and the penalties are severe relative to domestic filing failures.
Form 5471 is the information return for US persons who are officers, directors, or shareholders in certain foreign corporations. The five filing categories turn on the person’s relationship with the foreign corporation, and Category 5 (a US shareholder who owned stock in a CFC at any time during its tax year) is the most common trigger.15Internal Revenue Service. Instructions for Form 5471 The penalty for a late or incomplete Form 5471 is $10,000 per form per year. If the IRS sends a notice and the form is still missing after 90 days, an additional $10,000 accrues for each 30-day period of continued noncompliance, up to a continuation cap of $50,000. Total exposure for one missed form is $60,000.16Internal Revenue Service. International Information Reporting Penalties For a group with CFCs in several countries, that number scales fast.
Individuals with foreign financial assets above dollar thresholds that vary by filing status and country of residence must file Form 8938 with their tax return. The form covers foreign bank and brokerage accounts, interests in foreign entities, and foreign-issued financial instruments.17Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets? Form 8938 sits alongside the FBAR (FinCEN Report 114), which has its own filing requirement, its own thresholds, and its own agency. Many taxpayers with foreign assets have to file both. Missing either one is expensive, and willful noncompliance carries potential criminal exposure.