NCTI (Formerly GILTI) and FDDEI (Formerly FDII): OBBBA International Tax Practitioner Guide

The One Big Beautiful Budget Act (OBBBA), enacted July 4, 2025, renamed two cornerstones of the post-TCJA international tax regime: global intangible low-taxed income (GILTI) became net controlled taxpayer income (NCTI), and foreign-derived intangible income (FDII) became foreign-derived deduction-eligible income (FDDEI). The renaming alone would be manageable. What matters for practitioners advising U.S. shareholders of controlled foreign corporations (CFCs) is what OBBBA changed underneath those new names: the QBAI return is gone, the FTC haircut on CFC income climbed to 90%, and any excess NCTI foreign tax credits are permanently lost with no carryover. This guide walks through each change in order, with the pre-OBBBA comparison at every step, so practitioners can apply the right rules to the right tax year.

This guide is written for enrolled agents, CPAs, and tax attorneys who advise U.S. shareholders of CFCs and domestic corporations with foreign-derived income. All citations to IRC 250, IRC 951A, and the OBBBA must be verified against the enacted OBBBA text and current IRS.gov guidance before reliance in any client matter.

Section 1: What OBBBA Changed (GILTI to NCTI, FDII to FDDEI)

Background: GILTI and FDII Under TCJA 2017

The Tax Cuts and Jobs Act of 2017 (TCJA) enacted two linked international tax provisions that together shaped the post-2017 landscape for U.S. multinationals. GILTI, codified in IRC 951A, imposed a minimum tax on U.S. shareholders' proportionate share of their CFCs' global intangible low-taxed income, defined as net tested income in excess of a 10% deemed return on tangible assets (the QBAI return). At the same time, TCJA enacted FDII under IRC 250 as an incentive for domestic corporations to earn income from foreign markets using U.S.-based intangibles, offering a deduction that reduced the effective U.S. tax rate on qualifying foreign-derived income. The two provisions were designed to work together: GILTI discouraged moving intangible income offshore, while FDII rewarded keeping that income in the United States.

For tax years beginning on or before December 31, 2025, the TCJA GILTI and FDII rules apply in full: the GILTI inclusion is reduced by the QBAI return, the Section 250 deduction for C corporations is 50% of GILTI and 37.5% of FDII, the FTC haircut in the GILTI basket is 80%, and excess GILTI FTCs carry back one year and forward ten years.

For tax years beginning after December 31, 2025, the OBBBA rules govern. The OBBBA did not repeal or fundamentally restructure the two-provision framework; it modified the economics of each piece while preserving the basic architecture.

What OBBBA Changed (Effective After December 31, 2025)

OBBBA made six material changes to the GILTI/FDII framework for tax years beginning after December 31, 2025:

1. GILTI renamed NCTI. "Global intangible low-taxed income" was renamed "net controlled taxpayer income" (NCTI). Cite IRC 951A as amended by OBBBA. The statute carries over to the new label; the filing forms (primarily Form 8992) were revised accordingly.
2. FDII renamed FDDEI. "Foreign-derived intangible income" was renamed "foreign-derived deduction-eligible income" (FDDEI). OBBBA also modified the definition and the expense allocation rules for the FDDEI computation. Cite IRC 250 as amended. Hedge all FDDEI computation specifics to IRS.gov; regulatory guidance is expected.
3. Section 250 deduction rates changed. The deduction for C corporations is now 40% of NCTI (down from 50% of GILTI) and 40% of FDDEI (up from 37.5% of FDII). Both 40% figures are statutory under the enacted OBBBA; cite IRC 250 as amended.
4. QBAI return eliminated. The 10% deemed return on qualified business asset investment (QBAI), which previously reduced the GILTI inclusion, is eliminated for tax years beginning after December 31, 2025. The full net tested income of the CFC is now included as NCTI with no QBAI offset.
5. FTC haircut increased to 90%. Only 90% of the foreign income taxes paid by CFCs attributable to NCTI income can be credited against U.S. tax on the NCTI inclusion. The remaining 10% is permanently non-creditable. The prior haircut for GILTI was 80% (20% non-creditable). Cite the enacted OBBBA; hedge implementation guidance to IRS.gov.
6. NCTI FTC carryover eliminated. Excess foreign tax credits in the NCTI basket are permanently lost; there is no carryback or carryforward for the NCTI basket under OBBBA. Excess GILTI FTCs under prior law could carry back one year and forward ten years. Cite the enacted OBBBA.

What Did Not Change

The basic structure of the NCTI regime (U.S. shareholders include their pro-rata share of CFC net tested income; the CFC must qualify as a controlled foreign corporation under IRC 957; tested income and tested losses are aggregated across all CFCs owned by the U.S. shareholder) carries over from GILTI to NCTI without modification. The high-tax exclusion election under IRC 954(b)(4) is still available. Form 8992 remains the computational vehicle, though the form was revised for OBBBA. The deemed-paid credit mechanism under IRC 960 (allowing a corporate U.S. shareholder to claim FTCs for taxes paid by the CFC at the corporate level) also carries over, subject to the new 90% haircut.

Transition: Which Rules Apply to Which Tax Year

The OBBBA effective date is clean: tax years beginning on or before December 31, 2025 use the pre-OBBBA GILTI/FDII rules; tax years beginning after December 31, 2025 use the OBBBA NCTI/FDDEI rules. For a calendar-year taxpayer, this means the 2025 return (filed in 2026) still uses GILTI and FDII, while the 2026 return (filed in 2027) uses NCTI and FDDEI. For fiscal-year taxpayers, the crossover date depends on the first day of the taxpayer's taxable year.

Practitioners advising clients on amended returns for pre-2026 tax years, ongoing IRS controversies involving GILTI computations, or multi-year planning models spanning the transition must clearly identify which year's rules apply to each return period. Using OBBBA NCTI rules on a 2025 amended return, or applying pre-OBBBA GILTI rules on a 2026 return, would be an error. Flag the transition explicitly in any multi-year workpaper or client communication.

Section 2: Pre-OBBBA GILTI/FDII vs. OBBBA NCTI/FDDEI Comparison

The table below sets out the key differences between the pre-OBBBA GILTI/FDII framework and the OBBBA NCTI/FDDEI framework side by side. Use this as a quick-reference for multi-year engagements and transition planning.

Note: All percentage figures in this table are statutory rates under the enacted legislation. The taxable income limitation under IRC 250(a)(2) can reduce the Section 250 deduction amounts; hedge proration mechanics to IRS.gov. FDDEI computation specifics are subject to forthcoming regulatory guidance; hedge to IRC 250 as amended and IRS.gov.

Section 3: NCTI Inclusion Computation

The NCTI inclusion for a U.S. shareholder (under IRC 951A as amended by OBBBA) equals the excess of the shareholder's net tested income over zero. Under OBBBA, there is no QBAI offset: the full net tested income is the NCTI inclusion.

Net Tested Income

Net tested income equals the U.S. shareholder's aggregate pro-rata share of tested income from all of its CFCs, minus the aggregate pro-rata share of tested losses from all CFCs. If net tested income is positive, that amount is the NCTI inclusion. If net tested income is zero or negative, there is no NCTI inclusion for the year.

• Tested income: A CFC's gross income for the year (other than certain excluded categories, including subpart F income, effectively connected income, and dividends from related CFCs) minus allocable deductions. If tested income is positive for a CFC, the U.S. shareholder includes its pro-rata share.
• Tested loss: If a CFC has a net tested loss, it offsets tested income from other CFCs within the same U.S. shareholder's ownership structure. Tested losses from one CFC can reduce the NCTI inclusion from another CFC.
• No QBAI offset (OBBBA): Under prior GILTI rules, the inclusion was reduced by 10% of the U.S. shareholder's pro-rata share of the CFCs' qualified business asset investment (QBAI). OBBBA eliminated this offset entirely for tax years beginning after December 31, 2025. The full net tested income becomes the NCTI inclusion.

Hedge all NCTI inclusion computation specifics (including the tested income exclusion categories, the allocation of deductions to tested income, and the aggregation of tested income and tested loss across CFCs) to IRC 951A as amended by OBBBA and the current Form 8992 instructions at IRS.gov.

Section 4: Section 250 Deduction for NCTI (C Corporations Only)

Under IRC 250 as amended by OBBBA, a domestic C corporation may claim a deduction equal to 40% of its NCTI inclusion for the taxable year. This deduction reduces the corporation's taxable income attributable to the NCTI inclusion, lowering the effective U.S. tax rate on CFC income below the statutory 21% corporate rate.

Who Can Claim the Section 250 Deduction for NCTI

The Section 250 deduction for NCTI is available only to domestic C corporations. Individual U.S. shareholders of CFCs are not entitled to the Section 250 deduction; they are taxed on their full NCTI inclusion at their individual ordinary income marginal rate, with no deduction. This creates a significant tax rate differential between corporate and individual ownership of CFCs: a C corporation with a 21% statutory rate pays an effective rate reduced by the 40% deduction, while an individual pays their full marginal rate on the NCTI inclusion.

This differential existed under the prior GILTI rules as well (the Section 250 deduction was also limited to C corporations), but the OBBBA reduction of the NCTI deduction from 50% to 40% narrows the benefit relative to prior law for corporate shareholders.

Taxable Income Limitation (IRC 250(a)(2))

The Section 250 deduction (40% of NCTI plus 40% of FDDEI) cannot exceed the corporation's taxable income for the year, reduced by certain items specified in IRC 250(a)(2). If taxable income for the year is less than the sum of NCTI and FDDEI, the deduction is reduced pro-rata. Hedge all proration mechanics and the specific definition of "taxable income" for this limitation to IRC 250(a)(2) and IRS.gov; the computation is not straightforward and is subject to regulatory guidance.

Section 5: FDDEI (Formerly FDII) and the Section 250 Deduction

FDDEI (foreign-derived deduction-eligible income) is the OBBBA replacement for the prior FDII concept. Like FDII, FDDEI is income attributable to serving foreign markets using a domestic corporation's deduction-eligible income. The core policy purpose is unchanged: incentivizing U.S. corporations to earn income from foreign customers using U.S.-based operations and intangibles, rather than locating those intangibles in lower-tax foreign jurisdictions.

Section 250 Deduction for FDDEI: 40% (OBBBA)

Under IRC 250 as amended by OBBBA, a domestic C corporation may claim a deduction equal to 40% of its FDDEI for the taxable year. This is an increase from 37.5% under the prior FDII rules, making FDDEI slightly more favorable on a deduction-percentage basis than FDII was. The deduction is subject to the taxable income limitation under IRC 250(a)(2), which applies to the combined NCTI and FDDEI deductions (see Section 4 above).

The 40% FDDEI deduction is available only to domestic C corporations. Individuals are not entitled to the FDDEI deduction.

What Qualifies as FDDEI: Hedge to IRC 250 and IRS.gov

OBBBA modified the definition of FDDEI and the expense allocation rules for the FDDEI computation from the prior FDII rules. The exact computation mechanics, the definition of "deduction-eligible income," and the modified expense allocation methodology will be clarified in forthcoming Treasury regulations. Hedge all specifics of what qualifies as FDDEI, how the FDDEI amount is computed, and which expense allocation rules apply to IRC 250 as amended by OBBBA, the enacted OBBBA text, and IRS.gov. Do not rely on prior FDII computation mechanics for FDDEI without confirming that the specific rule carried forward unchanged.

Section 6: FTC Haircut (90%) and No Carryover in the NCTI Basket

The foreign tax credit mechanics in the NCTI basket are significantly harsher under OBBBA than they were under the prior GILTI rules. There are two interacting changes: a higher haircut on creditable taxes, and the elimination of the carryover for excess credits. Both are statutory under the enacted OBBBA; both are non-negotiable permanent rules until Congress acts.

The 90% FTC Haircut (OBBBA)

Of the foreign income taxes paid by CFCs that are attributable to NCTI income, only 90% can be credited against U.S. tax on the NCTI inclusion. The remaining 10% is permanently non-creditable; it cannot be credited, deducted, or carried to any other year or basket.

Under the prior GILTI rules, the haircut was 80%: only 80% of CFC taxes attributable to GILTI income could be credited, leaving 20% permanently non-creditable. The OBBBA increase from 80% to 90% creditable sounds like an improvement on first read, but it means that the non-creditable portion shrank from 20% to 10%. In absolute terms, the OBBBA haircut is less penalizing per dollar of foreign taxes paid than the prior GILTI haircut. The practical concern is the interaction of the 90% limit with the elimination of carryovers (addressed below), which amplifies the cost of any excess FTC position.

Cite the enacted OBBBA for the 90% haircut figure. Hedge all implementation mechanics (including which taxes are "attributable to NCTI income" for purposes of the haircut) to IRS.gov as regulatory guidance may be issued by Treasury.

No NCTI FTC Carryover (OBBBA)

Under OBBBA, excess foreign tax credits in the NCTI basket -- credits that exceed the current-year NCTI FTC limitation -- cannot be carried back or forward. They are permanently lost at the end of the taxable year. Cite the enacted OBBBA.

This is a significant departure from the general rule for FTCs under IRC 904(c), which allows excess credits in the passive and general baskets to carry back one year and forward ten years. Under prior GILTI law, excess GILTI FTCs could also carry back one year and forward ten years. OBBBA eliminated that relief for the NCTI basket entirely.

The practical effect: if a CFC pays foreign tax at a rate that generates more creditable NCTI FTCs than the current-year NCTI FTC limitation can absorb, the excess is permanently gone. In prior years, a taxpayer in this position could at least carry the excess to a future year when NCTI income was lower (or there was none). Under OBBBA, there is no such relief.

Planning Impact: High-Tax CFCs and Excess NCTI FTC Positions

For U.S. shareholders of CFCs in high-tax foreign jurisdictions (where foreign effective tax rates are high relative to the NCTI FTC limitation), the combination of the 90% haircut and the no-carryover rule creates a permanent cost structure: 10% of CFC taxes on NCTI income is permanently non-creditable, and any excess NCTI FTCs beyond the limitation are also permanently lost. There is no mechanism to recover either amount in future years.

This makes the high-tax exclusion election under IRC 954(b)(4) (see Section 7 below) more valuable than it was under prior GILTI law, because the exclusion converts a high-tax CFC income position from a problematic excess-FTC position into a non-inclusion with no FTC issue at all.

Section 7: High-Tax Exclusion Election (IRC 954(b)(4)) -- Interaction with OBBBA

The high-tax exclusion under IRC 954(b)(4) allows a U.S. shareholder to elect to exclude from NCTI any CFC income that was subject to foreign income tax at a rate above the applicable threshold. OBBBA did not eliminate the high-tax exclusion; it remains available for tax years beginning after December 31, 2025.

Threshold: Do Not State a Specific Rate

The applicable effective tax rate threshold for the high-tax exclusion is not stated in this guide. Confirm the current threshold at IRS.gov and in the most current Treasury regulations or other guidance under IRC 954(b)(4). The threshold has been subject to regulatory change, and practitioners must verify the current applicable rate before advising clients on whether a CFC's income qualifies for the exclusion.

How the Election Works

If a U.S. shareholder makes a valid high-tax exclusion election for a CFC's income that qualifies above the threshold, that income is excluded from the NCTI inclusion entirely: no U.S. tax applies to the excluded income. The tradeoff is that no foreign tax credit is available for the foreign taxes paid on the excluded income. The FTC is tied to the U.S. inclusion: if there is no U.S. inclusion, there is no U.S. tax to credit against, and therefore no FTC for the excluded income's foreign taxes.

Why the High-Tax Exclusion Is More Valuable Under OBBBA

Under the prior GILTI rules, a taxpayer in an excess FTC position in the GILTI basket could carry excess credits forward up to ten years. That carryover provided a safety valve: even if the current year generated more GILTI FTCs than the limitation could absorb, there was a reasonable chance of using the excess in a future year with lower GILTI income.

Under OBBBA, that safety valve is gone. Excess NCTI FTCs are permanently lost. For a U.S. shareholder whose CFC is in a high-tax jurisdiction -- where the foreign effective rate is above the NCTI FTC limitation rate -- the choice between including the income (with an excess FTC position that will be permanently lost) and excluding the income via the high-tax exclusion (with no U.S. tax and no FTC) often favors exclusion.

Additionally, OBBBA eliminated the QBAI return, which means the NCTI inclusion now equals the full net tested income with no QBAI offset. In prior years, the QBAI return reduced the GILTI inclusion for tangible-asset-heavy CFCs, which also reduced the GILTI FTC limitation (less inclusion = lower limitation). Without the QBAI offset, the NCTI inclusion is larger, and the resulting FTC limitation may create more (or less) excess FTC exposure depending on the individual taxpayer's structure. Analyze the specific CFC's income, foreign tax rate, and QBAI position in the context of the new no-QBAI, no-carryover, 90% haircut environment before advising on the high-tax exclusion.

Frequently Asked Questions: NCTI, FDDEI, and OBBBA Section 250

1. What did OBBBA change about GILTI?

   OBBBA (effective for tax years beginning after December 31, 2025) renamed GILTI to NCTI (net controlled taxpayer income) and made four substantive changes: (1) it eliminated the 10% QBAI return that previously reduced the GILTI inclusion, so the NCTI inclusion now equals the full net tested income; (2) it increased the FTC haircut in the CFC income basket from 80% creditable to 90% creditable (meaning the non-creditable portion dropped from 20% to 10%, but any excess is now permanently lost); (3) it eliminated the carryover of excess NCTI FTCs, which under prior GILTI law could carry back one year and forward ten years; and (4) it reduced the Section 250 deduction for C corporations from 50% of GILTI to 40% of NCTI (IRC 250 as amended by OBBBA). For tax years through December 31, 2025, the prior GILTI rules continue to apply in full.

2. What is the Section 250 deduction for NCTI and who can claim it?

   C corporations (only) can deduct 40% of their NCTI inclusion under the OBBBA-amended Section 250 (IRC 250 as amended). Individual U.S. shareholders of CFCs are not entitled to the Section 250 deduction; they pay ordinary income tax on the full NCTI inclusion at their individual marginal rate. The deduction is subject to the taxable income limitation under IRC 250(a)(2): if the corporation's taxable income for the year is less than the sum of NCTI and FDDEI, the deduction is reduced pro-rata. Hedge all proration mechanics to IRC 250(a)(2) and IRS.gov.

3. What is QBAI and was it eliminated?

   QBAI (qualified business asset investment) was a deemed return on tangible assets used in a CFC's business, equal to 10% of the CFC's QBAI. Under the pre-OBBBA GILTI rules, the GILTI inclusion was reduced by the U.S. shareholder's pro-rata share of the CFCs' QBAI returns, which reduced the inclusion for tangible-asset-heavy businesses. OBBBA eliminated the QBAI return entirely for tax years beginning after December 31, 2025. The NCTI inclusion now equals the full net tested income of the CFC with no QBAI offset. Tangible-asset-heavy CFCs that previously had a significantly reduced GILTI inclusion due to the QBAI return will see a larger NCTI inclusion under OBBBA. The QBAI return still applies to GILTI for tax years beginning on or before December 31, 2025.

4. What is the FTC haircut for NCTI under OBBBA?

   Under OBBBA (effective for tax years beginning after December 31, 2025), only 90% of the foreign income taxes paid by CFCs attributable to NCTI income can be credited against U.S. tax on the NCTI inclusion. The remaining 10% is permanently non-creditable and cannot be recovered in any other year or basket. Under the prior GILTI rules, the haircut was 80% (20% non-creditable). Additionally, under OBBBA, excess NCTI FTCs (credits that exceed the current-year NCTI FTC limitation) cannot be carried back or forward -- they are permanently lost. Cite the enacted OBBBA for the 90% figure and the no-carryover rule; hedge all implementation mechanics to IRS.gov as Treasury may issue guidance on which taxes are attributable to NCTI income for these purposes.

5. What is FDDEI (formerly FDII) and how does the deduction work?

   FDDEI (foreign-derived deduction-eligible income) is OBBBA's replacement for FDII (foreign-derived intangible income). It is income attributable to serving foreign markets using a domestic corporation's operations. C corporations can deduct 40% of their FDDEI for the taxable year under the OBBBA-amended Section 250 (IRC 250 as amended), up from 37.5% for FDII under prior law. This deduction reduces the corporation's effective U.S. tax rate on qualifying foreign-market income. OBBBA modified the FDDEI definition and expense allocation rules from the prior FDII framework; the exact computation mechanics are subject to forthcoming regulatory guidance. Hedge all FDDEI computation specifics, including what qualifies as FDDEI and how the deduction-eligible income base is computed, to IRC 250 as amended by OBBBA and IRS.gov.

6. Can excess NCTI foreign tax credits be carried forward?

   No. Under OBBBA, excess FTCs in the NCTI basket cannot be carried back or carried forward; they are permanently lost at the end of the taxable year. This is a significant departure from both the prior GILTI FTC rules (which allowed a 1-year carryback and 10-year carryforward) and the general and passive FTC baskets under IRC 904(c), which retain the carryback and carryforward for excess credits. The no-carryover rule for the NCTI basket makes the high-tax exclusion election (IRC 954(b)(4)) more attractive for taxpayers whose CFCs are in high-tax jurisdictions, because the exclusion avoids generating an excess NCTI FTC position that would be permanently lost. Cite the enacted OBBBA; confirm at IRS.gov.

7. Does the OBBBA NCTI rule apply to individual U.S. shareholders of CFCs?

   Yes. NCTI applies to all U.S. shareholders (IRC 951(b)) of CFCs (IRC 957), including individuals. A U.S. shareholder is generally defined as a U.S. person that owns 10% or more of the total combined voting power of a foreign corporation's stock. Individual U.S. shareholders must include their pro-rata share of the CFC's net tested income as NCTI, just as they were subject to GILTI under prior law. However, the Section 250 deduction (40% of NCTI) is available only to domestic C corporations, not to individual shareholders. Individuals pay ordinary income rates on the full NCTI inclusion with no Section 250 deduction, creating a significant tax rate differential between corporate and individual ownership of CFCs with NCTI income. Cite IRC 951A as amended and IRC 951(b) for the U.S. shareholder definition.

Related Practitioner Guides

The following guides cover international tax provisions and post-OBBBA obligations that practitioners analyze alongside the IRC 250 NCTI deduction.

• IRC 904 FTC Limitation, Basket Rules, and OBBBA Section 904(b)(5) -- FTC limitation formula, basket system, Section 904(b)(5) expense allocation restriction for the NCTI basket, and five open guidance questions for 2026 FTC planning.
• IRC 987 Branch Functional Currency: FEEP Method, Remittance, and Form 8964 -- FEEP method mechanics, remittance proportion, Forms 8964-TRA and 8964-ELE, and Notice 2026-17 proposed simplifications (not yet final).
• IRC 245A Participation Exemption DRD -- Section 245A DRD mechanics, expense disallowance under IRC 245A(d), and interaction with the post-OBBBA NCTI deduction framework.
• IRC 956 U.S. Property, Deemed Dividends, and the FCUS Extension: OBBBA Practitioner Guide -- IRC 956 U.S. property investment mechanics, deemed dividends, and the OBBBA extension to FCUSes and FCFCs under IRC 951B.
• IRC 1248 CFC Stock Sale Gain Recharacterization: PTEP, Section 245A, and NCTI OBBBA Practitioner Guide -- IRC 1248 CFC stock sale gain recharacterization: E&P ceiling, PTEP exclusion, Section 245A DRD, and post-2025 NCTI basket interactions.
• IRC 959 and 961 PTEP Mechanics, Ordering Rules, and Basis Adjustments: OBBBA Practitioner Guide -- PTEP mechanics for NCTI inclusions: LIFO ordering, Section 960(d)(4) FTC disallowance, IRC 961 basis adjustments, and Section 986(c) currency gain on NCTI PTEP distributions.
• Foreign Tax Credit Form 1116 and Form 1118 OBBBA Guide -- the NCTI deduction under IRC 250 reduces the gross tested income used in the foreign tax credit limitation calculation; practitioners must run the IRC 250 NCTI deduction and the FTC limitation together for any C-corporation with significant CFC income; the OBBBA changed both the NCTI deduction rate and the FTC basket mechanics simultaneously.
• CAMT Corporate Alternative Minimum Tax Form 4626 Guide -- the CAMT adjusted financial statement income base may diverge from taxable income when computing NCTI; book income from CFCs included in the AFSI base and the tested income used for NCTI interact; large C-corporations with significant CFC holdings model CAMT and NCTI together.
• Form 5471 and Form 5472 Foreign Corporation Reporting Guide -- the NCTI deduction is computed at the CFC level using tested income and tested loss data derived from Form 5471; the Form 5471 and the IRC 250 NCTI computation are prepared together for the same CFC group; errors in Form 5471 schedules flow directly into the IRC 250 deduction.
• IRC 965 Transition Tax Guide -- IRC 965 and IRC 250 affect the same universe of taxpayers: U.S. shareholders of controlled foreign corporations; the transition tax established the framework for subpart F income inclusion that NCTI now builds on; practitioners advising clients with outstanding IRC 965 installment elections must also assess the current-year IRC 250 NCTI deduction position.
• IRC 267A Anti-Hybrid Rules: Hybrid Deduction Accounts and Specified Payment Guide -- IRC 267A can disallow deductions for specified payments to related parties in hybrid arrangements, and the hybrid deduction account rules interact with the IRC 250 NCTI computation for the same CFC group; practitioners running the NCTI deduction should confirm no specified payment has been disallowed under the anti-hybrid rules.
• IRC 59A Base Erosion Anti-Abuse Tax: BEAT Calculation, Form 8991, and OBBBA Interactions Guide -- the BEAT applicable taxpayer test and base erosion percentage draw on the same related-party payment data used in the IRC 250 NCTI computation, and the NCTI deduction reduces the regular tax liability that BEAT is compared against; practitioners modeling NCTI for large multinational C-corporations should run the BEAT calculation on Form 8991 in parallel.
• IRC 951B Foreign-Controlled U.S. Shareholder (FCUS): OBBBA Practitioner Guide -- the OBBBA-enacted IRC 951B foreign-controlled U.S. shareholder rules expand the universe of persons treated as U.S. shareholders and the CFCs subject to Subpart F and NCTI inclusions, so practitioners running the IRC 250 NCTI deduction must confirm which entities fall inside the FCUS and FCFC definitions after the 958(b)(4) restoration.
• Pillar Two / GLOBE Minimum Tax: U.S. Practitioner Guide -- OECD GloBE framework for U.S. MNEs: ETR computation, SBIE carve-out, QDMTT safe harbor, NCTI covered-tax open question, and asymmetric UTPR exposure.
• IRC 954 Subpart F: FPHCI, FBCSI, FBCSEI, and HTE Election -- CFC Practitioner Guide -- Six Subpart F income categories, threshold rules, HTE election mechanics, and post-OBBBA NCTI coordination for CFC practitioners.
• IRC 367 Outbound Transfers, GRAs, and 367(d) IP Repatriation -- IRC 367(a) gain recognition, gain recognition agreements under Treas. Reg. 1.367(a)-8, the 367(d) deemed royalty regime for outbound intangible transfers, IP repatriation, and OBBBA NCTI interaction open questions.
• IRC 7874 Anti-Inversion Rules, Surrogate Foreign Corporation, and Expatriate Corporation -- Anti-inversion rules for outbound corporate restructuring: surrogate foreign corporation (80% threshold), expatriate corporation inversion gain tax (60-80% threshold), substantial business activities safe harbor, serial acquisition look-back rules, and post-inversion NCTI analysis under OBBBA.
• IRC 864 ECI, FDAP, and U.S. Trade or Business -- USTOB and ECI framework for inbound foreign parents with U.S. controlled entities, and OBBBA NCTI/ECI open questions for 2026 planning.
• IRC 884 Branch Profits Tax: DEA and Inbound Structuring -- Branch profits tax and OBBBA NCTI interaction open questions for foreign parents with U.S. branch operations and CFC subsidiaries.
• IRC 1503(d) Dual Consolidated Loss: DUA, DPL Rules, and Pillar Two Coordination -- NCTI-DCL open questions (unresolved as of July 2026), domestic use agreement mechanics, and DPL rules announced for withdrawal (T.D. 10026/Notice 2025-44).
• IRC 962: Individual CFC Shareholder Election, NCTI, and Subpart F Corporate Rate -- the IRC 962 election allows a U.S. individual CFC shareholder to be taxed at the 21% corporate rate on NCTI inclusions; the net benefit of the election turns on the IRC 250 deduction rate (40% post-OBBBA, producing an effective NCTI rate of approximately 12.6%), the FTC haircut reduction to 10%, and the QBAI elimination; practitioners running the IRC 250 NCTI deduction for C-corporations should also evaluate the IRC 962 election for any individual shareholders in the same CFC group.
• IRC 951A NCTI/GILTI: Net CFC Tested Income, QBAI Elimination, and OBBBA 2025 Practitioner Guide -- the OBBBA 2025 elimination of the QBAI offset means the entire net CFC tested income amount flows into each US shareholder's IRC 951A inclusion; the IRC 250 deduction for NCTI (the companion provision to the IRC 951A inclusion) dropped from 50 percent to 40 percent effective January 1, 2026; IRC 250 practitioners must recompute the NCTI effective tax rate under the revised parameters and analyze the IRC 960(d) deemed-paid FTC reduction from 80 percent to 70 percent before advising on CFC group structures post-OBBBA (verify at IRS.gov and consult independent counsel, as these provisions are recently enacted and implementation guidance may be pending).
• IRC 951 Subpart F Income: US Shareholder CFC Inclusion, Pro-Rata Share, and PTEI Practitioner Guide -- the IRC 250 NCTI deduction applies at the US shareholder level on the IRC 951A NCTI inclusion, but the underlying Subpart F income categories under IRC 954 and the inclusion mechanism under IRC 951 are entirely separate regimes; practitioners advising on CFC groups must analyze both the IRC 951 Subpart F inclusion and the IRC 951A NCTI inclusion before computing the IRC 250 deduction base, because the IRC 250 deduction applies only to the NCTI portion and not to the Subpart F income included under IRC 951 (verify at IRS.gov and consult independent counsel, as these provisions are recently enacted and implementation guidance may be pending).

Disclaimer and Verification Notice

This guide is for informational purposes only and does not constitute legal, tax, or accounting advice. All statutory citations, regulatory references, IRS guidance, and computation mechanics must be verified against the enacted OBBBA text, IRC 250 as amended, IRC 951A as amended, IRC 954(b)(4), IRC 904(c), current Form 8992 instructions, current Form 8993 instructions, current Form 5471 instructions, and current IRS.gov guidance before reliance in any specific client matter. Regulatory guidance from Treasury and the IRS is expected on OBBBA NCTI and FDDEI provisions; monitor IRS.gov for updates that may affect the rules described in this guide. For tax years beginning on or before December 31, 2025, the pre-OBBBA GILTI and FDII rules apply; verify the applicable year's rules before advising on any return or planning matter.

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