GILTI: Legal Definition and Meaning

GILTI - Global Intangible Low-Taxed Income - is a category of income defined under US federal tax law that subjects certain foreign earnings of US shareholders to current taxation in the United States. Introduced as part of a sweeping overhaul of the US international tax system, GILTI was designed to limit the ability of US-based multinationals to shift profits to low-tax jurisdictions by parking intangible assets and related income offshore. For any US person or entity with ownership in a foreign corporation, understanding GILTI is not optional - it directly affects tax liability, corporate structure decisions, and cross-border planning. This guide covers the legal definition of GILTI, how it is calculated, who it applies to, how it interacts with other tax provisions, and what practical steps businesses typically consider.

GILTI is defined under Section 951A of the Internal Revenue Code (IRC), which was enacted as part of the Tax Cuts and Jobs Act. At its core, GILTI represents the aggregate net income of a controlled foreign corporation (CFC) that exceeds a deemed routine return on the CFC';s tangible assets. In plain terms, the law assumes that a normal return on physical assets - machinery, buildings, equipment - is legitimate and should not be taxed immediately. Anything above that threshold is treated as income derived from intangible sources such as patents, software, trademarks, or business processes, and is therefore subject to US tax on a current basis.

A controlled foreign corporation is a foreign corporation in which US shareholders - defined as US persons owning at least 10% of the voting power or value - collectively own more than 50% of the stock. Each US shareholder who owns at least 10% of a CFC must include their pro-rata share of the CFC';s GILTI in their US gross income for the year, regardless of whether the CFC actually distributes any dividends.

The legal mechanics work as follows. The CFC';s net tested income is first calculated by aggregating income from all CFCs owned by the US shareholder, then subtracting a deemed tangible income return (DTIR). The DTIR equals 10% of the CFC';s qualified business asset investment (QBAI), which is the average of the CFC';s adjusted bases in depreciable tangible property used in a trade or business. The excess of net tested income over the DTIR is the GILTI inclusion amount.

GILTI applies to any US shareholder of one or more CFCs. This includes US corporations, US individuals, US partnerships, S corporations, and trusts or estates that meet the ownership threshold. The breadth of this definition means that GILTI is not limited to large multinationals - a small business owner who holds shares in a foreign operating company may be caught by these rules.

The treatment differs significantly depending on whether the US shareholder is a C corporation or an individual. US C corporations can claim a deduction under IRC Section 250, which effectively reduces the GILTI inclusion by 50% (subject to certain limitations), and may also claim a foreign tax credit for a portion of foreign taxes paid by the CFC. This combination can reduce the effective US tax rate on GILTI to a level substantially below the headline corporate rate, provided the foreign jurisdiction imposes a sufficient level of tax.

US individuals who own CFCs directly - rather than through a domestic corporation - face a less favourable treatment. They do not automatically qualify for the Section 250 deduction or the same foreign tax credit mechanism available to corporations. As a result, individual shareholders may face a higher effective tax rate on GILTI than corporate shareholders holding the same underlying assets. A common planning response is to hold CFC interests through a domestic C corporation, though this introduces its own structural and compliance considerations.

In practice, founders should consider the ownership chain carefully before establishing a foreign subsidiary. A non-obvious requirement is that GILTI applies even when the foreign company has not distributed any profits - the income inclusion is mandatory and current, not deferred.

The calculation of GILTI follows a defined sequence under the IRC and accompanying Treasury regulations. Understanding the steps is essential for any adviser or business owner managing a CFC structure.

The starting point is net tested income. Each CFC';s gross tested income is determined by taking its total gross income and excluding certain categories: effectively connected income, subpart F income (which is already taxed currently under separate rules), income subject to a high foreign tax rate under the high-tax exclusion, dividends from related parties, and foreign oil and gas extraction income. The remaining income is gross tested income. From this, tested deductions are subtracted to arrive at net tested income. If a CFC has a net tested loss, that loss can offset net tested income from other CFCs owned by the same US shareholder.

The second component is QBAI. This is the average of the CFC';s adjusted tax bases in tangible depreciable property, measured at the close of each quarter of the CFC';s tax year. Only property used in the production of tested income qualifies. The DTIR is 10% of QBAI. If a CFC has substantial tangible assets, the DTIR will be larger, reducing the GILTI inclusion.

The GILTI inclusion is then the excess of net tested income over the DTIR, reduced by certain interest expense allocations. This amount flows through to the US shareholder';s return as ordinary income. For a C corporation, the Section 250 deduction then reduces the taxable GILTI by 50% (or a lower percentage if the deduction is limited by taxable income). A foreign tax credit may then offset a portion of the remaining US tax, subject to a separate GILTI foreign tax credit basket and a 20% haircut on deemed paid taxes.

A common mistake is to assume that paying high foreign taxes automatically eliminates GILTI exposure. Under the standard rules, only 80% of the foreign taxes attributable to GILTI are creditable, and the credit is limited to the US tax on GILTI. If the foreign effective tax rate is below a certain threshold, residual US tax will remain.

The Treasury regulations include a high-tax exclusion (HTE) that allows US shareholders to elect to exclude from gross tested income any item of CFC income that was subject to a foreign effective tax rate above a specified threshold - currently set at more than 90% of the US corporate tax rate. For a US corporate tax rate of 21%, this means foreign income taxed at more than approximately 18.9% can potentially be excluded from GILTI.

The HTE election is made on a CFC-by-CFC basis and applies to all items of income within a tested unit that meet the threshold. It is an annual election and must be consistent across all CFCs owned by the same US shareholder group. The election can be advantageous when a CFC operates in a high-tax jurisdiction and the US shareholder would otherwise face a residual GILTI liability after foreign tax credits. However, electing the HTE removes the income from the GILTI basket entirely, which may affect the availability of foreign tax credits in other contexts.

Another planning consideration involves the interaction of GILTI with the Subpart F rules. Subpart F income - passive income, certain sales income, and other categories defined under IRC Sections 952 through 964 - is taxed currently under a separate regime that predates GILTI. Income that is already included under Subpart F is excluded from the GILTI calculation. Advisers must therefore analyse both regimes together when assessing the overall US tax exposure of a CFC structure.

For businesses with significant intangible assets, the choice of where to locate those assets - and where to book the related income - has direct GILTI consequences. A CFC that holds patents and licenses them to related parties will generate tested income with little or no QBAI to offset it, resulting in a large GILTI inclusion. Conversely, a CFC that operates a capital-intensive manufacturing facility will have substantial QBAI, reducing the GILTI exposure.

If you are structuring a cross-border business and need to assess GILTI exposure across multiple jurisdictions, contact info@vlolawfirm.com. We can help structure the setup correctly the first time.

GILTI did not emerge in isolation. It was part of a broader shift in US international tax policy away from a worldwide tax system with deferral toward a hybrid territorial system with anti-base-erosion measures. The same legislation that introduced GILTI also created the Foreign Derived Intangible Income (FDII) deduction for US corporations that export goods and services, and the Base Erosion and Anti-Abuse Tax (BEAT), which targets certain deductible payments made to foreign affiliates.

At the international level, GILTI has been discussed extensively in the context of the OECD';s global minimum tax framework, commonly referred to as Pillar Two. The OECD';s Global Anti-Base Erosion (GloBE) rules establish a 15% global minimum effective tax rate for large multinational enterprises. There is ongoing debate about whether GILTI, as currently structured, qualifies as an equivalent measure under the GloBE rules, and whether US multinationals subject to GILTI would also face top-up taxes under Pillar Two regimes enacted by other countries.

The interaction between GILTI and Pillar Two is a live issue for multinationals with operations in jurisdictions that have enacted domestic minimum top-up taxes. A non-obvious requirement is that even if a US parent pays GILTI on a CFC';s income, a foreign jurisdiction applying a Pillar Two top-up tax may not give full credit for the US tax paid, depending on how that jurisdiction';s rules treat GILTI. This creates a risk of double taxation that requires careful modelling.

Recent legislative proposals have suggested modifications to the GILTI rate and the Section 250 deduction percentage, reflecting ongoing political debate about the appropriate level of taxation on foreign income. Businesses should monitor these developments and assess the sensitivity of their structures to potential changes.

Scenario one: US technology company with an Irish subsidiary. A US C corporation owns 100% of an Irish subsidiary that holds intellectual property and licenses it to related parties across Europe. The Irish subsidiary has minimal tangible assets - its QBAI is low - and generates substantial net tested income. The DTIR is correspondingly small. The GILTI inclusion is large. The Irish effective tax rate may be sufficient to generate foreign tax credits, but after the 20% haircut and the credit limitation, a residual US tax liability remains. The company must include the GILTI amount in its US return and pay tax on the net amount after the Section 250 deduction and available credits.

Scenario two: US individual owning a manufacturing CFC in Germany. A US individual owns 60% of a German GmbH that operates a manufacturing plant. The GmbH has significant tangible assets, so QBAI is substantial and the DTIR offsets much of the net tested income. However, because the shareholder is an individual rather than a C corporation, the Section 250 deduction is not available. The individual must include the full GILTI amount in gross income and may face a higher effective rate than a corporate shareholder in the same position. This scenario illustrates why ownership structure - individual versus corporate - matters significantly for GILTI planning.

A common mistake made by foreign founders establishing US holding companies is to underestimate the GILTI exposure of their existing foreign operations once a US entity enters the ownership chain. Even a minority US shareholder who crosses the 10% threshold can trigger CFC status and GILTI obligations for the entire US shareholder group.

Does GILTI apply to small businesses with a single foreign subsidiary?

Yes. GILTI applies to any US shareholder who owns at least 10% of a CFC, regardless of the size of the business or the amount of income involved. There is no de minimis threshold based on revenue or asset size. A sole proprietor or small business owner who holds shares in a foreign company through a US entity can be subject to GILTI if the ownership and income thresholds are met. The compliance burden - including the requirement to file Form 8992 and related schedules - applies equally to small and large taxpayers. Many small business owners discover this obligation only after the fact, which can result in penalties and interest on underpaid tax.

How does the foreign tax credit reduce GILTI, and what are its limits?

US C corporations can claim a foreign tax credit against their GILTI liability using a deemed paid credit mechanism under IRC Section 960. The credit is based on the foreign taxes paid by the CFC that are attributable to GILTI. However, only 80% of those taxes are treated as creditable, and the credit is computed in a separate GILTI foreign tax credit basket, which limits cross-crediting with other foreign income. If the CFC';s effective foreign tax rate is sufficiently high, the credit can reduce or eliminate the residual US tax on GILTI. If the foreign rate is low, a meaningful US tax liability will remain. The calculation requires detailed information about the CFC';s income, taxes, and asset bases.

What is the difference between GILTI and Subpart F income?

Subpart F is an older anti-deferral regime that targets specific categories of passive or mobile income earned by CFCs, such as dividends, interest, rents, and certain sales income. GILTI is a broader, residual category that captures active business income of CFCs that exceeds the routine return on tangible assets. Income that is already included under Subpart F is excluded from the GILTI calculation, so the two regimes do not overlap. The key practical difference is that Subpart F targets specific income types defined by category, while GILTI operates as a floor on the overall taxation of CFC income, regardless of its character. Both regimes require current inclusion in the US shareholder';s income without waiting for a dividend distribution.

GILTI is a fundamental concept in US international tax law that affects any US person or entity with ownership in a foreign corporation. Its legal definition under IRC Section 951A establishes a current inclusion mechanism for foreign income that exceeds a deemed return on tangible assets, limiting the tax benefit of holding intangible income offshore. The rules interact with Subpart F, the Section 250 deduction, foreign tax credits, and increasingly with international Pillar Two frameworks, making GILTI analysis a multi-layered exercise for any cross-border structure.

VLO Law Firms advises international clients on GILTI and US international tax matters in cross-border structures. We can assist with CFC analysis, GILTI exposure modelling, ownership structure planning, and compliance filings. To request a consultation, contact: info@vlolawfirm.com