What Is Section 909? Foreign Tax Credit Splitting Rules

Section 909 of the Internal Revenue Code contains the foreign tax credit splitting rules, which suspend a foreign tax credit whenever the entity that pays the foreign tax is a different person from the entity that will recognize the related income for U.S. tax purposes. The credit stays frozen until that related income actually enters the U.S. tax base.¹ The rule exists to stop taxpayers from claiming a foreign tax credit years before the matching income shows up on a U.S. return, a mismatch that certain cross-border structures were built to produce.

What Counts as a Splitting Event

Everything in Section 909 turns on whether a “foreign tax credit splitting event,” or FTCSE, has occurred. The statute defines one as a situation where the income related to a foreign tax payment is, or will be, taken into account by a “covered person” rather than by the person who actually paid or accrued the tax.¹ The focus is the person mismatch, not a mismatch in timing.

Once an FTCSE exists, the foreign tax becomes a “split tax.” The split tax cannot reduce U.S. tax liability until the year the related income is recognized. The related income is whatever income or earnings and profits the split portion of foreign tax relates to under the particular splitter arrangement rules that apply.

Who Is a Covered Person

Not every person mismatch triggers Section 909. The counterparty has to be a “covered person” measured against the payor of the foreign tax. Four categories qualify:

Any entity in which the payor holds at least a 10 percent interest by vote or value, directly or indirectly.
Any person holding at least a 10 percent interest in the payor.
Anyone related to the payor under the constructive ownership rules of Sections 267(b) or 707(b).
Any other person the Treasury Department specifies by regulation.

The 10 percent threshold combined with the related-party net sweeps in essentially any entity inside a controlled foreign corporation chain or a concentrated partnership structure.¹

The Splitter Arrangements the Regulations Target

The Treasury regulations identify specific arrangement types that produce splitting events. Each one exploits a mismatch between how the U.S. and a foreign jurisdiction classify an entity, an instrument, or a loss.

Reverse Hybrid Entities

A reverse hybrid is treated as a corporation for U.S. purposes but as fiscally transparent under foreign law. The foreign jurisdiction looks through the entity and taxes the U.S. owner directly on the income as earned, while for U.S. purposes the owner generally recognizes nothing until a distribution, a Subpart F inclusion, or a GILTI inclusion. The regulation treats a reverse hybrid as a splitter arrangement whenever the payor pays or accrues foreign taxes on the reverse hybrid’s income, and the treatment applies even if the reverse hybrid has a loss or an earnings and profits deficit for U.S. purposes in a given year.²

Loss-Sharing Arrangements

Many foreign jurisdictions allow affiliated companies to share losses through group relief or consolidated return regimes. A loss-sharing splitter arises when one group member’s loss could have offset that same group’s own income, currently or in a prior year, but is instead used to offset another group member’s income for foreign tax purposes. The U.S. system does not recognize that cross-group offset, so the foreign tax ends up split from the income it supposedly relates to.²

Hybrid Instruments

These involve instruments treated as equity for U.S. purposes but as debt under foreign law, or the reverse. The regulations describe two patterns. A U.S. equity hybrid instrument is one where the owner includes income for foreign tax purposes and the issuer claims a foreign deduction, yet no corresponding income inclusion occurs for U.S. purposes. A U.S. debt hybrid instrument works the other direction: the issuer pays foreign tax on income that for U.S. purposes is deductible interest, so the U.S. deduction erodes the U.S. tax base without a matching reduction in the foreign tax credit.² Either way, foreign tax and related income land with different persons on the U.S. side.

How Suspension Works and What Releases It

When a foreign tax is classified as a split tax, it cannot be credited, cannot be factored into earnings and profits calculations, and cannot otherwise reduce U.S. tax until the related income is recognized.¹ The taxpayer has to track both the suspended tax amount and the pool of related income that is waiting to be recognized. No expiration date applies. Suspended taxes stay suspended until the income event occurs.

Release happens when the U.S. taxpayer takes the related income into account. Common triggers include a dividend from the foreign entity, a Subpart F income inclusion, a GILTI inclusion, or gain on sale of the foreign subsidiary’s stock. When the income is recognized, a proportionate share of the suspended split tax is released and treated as if it were paid or accrued in that year.¹ The released tax is not retranslated into U.S. dollars under the Section 986(a) exchange rate rules for the release year; it keeps its original translation, which matters when exchange rates have moved.

CFCs, Partnerships, S Corporations, and Trusts

Section 909 has a separate subsection for specified 10-percent owned foreign corporations, a category that captures most CFCs. When a splitting event occurs at the CFC level, the split tax cannot be taken into account for deemed-paid credit purposes under Section 960 and is excluded from the CFC’s earnings and profits under Section 964(a) until the related income is recognized by the CFC or by a U.S. shareholder.¹ That keeps the mismatch from inflating the pools that drive deemed-paid credit calculations.

For partnerships, the suspension rules apply at the partner level, not the partnership level, and the same approach extends to S corporations and trusts.¹ Each partner independently determines whether a splitting event has occurred with respect to its share of the partnership’s foreign taxes and related income, which adds tracking complexity for partnerships with many partners.

Interaction with Section 901(m) Covered Asset Acquisitions

Covered asset acquisitions carry their own foreign tax credit restrictions under Section 901(m), and Section 909 can stack on top. A covered asset acquisition occurs when a transaction increases the U.S. tax basis of acquired assets without a corresponding increase in their foreign tax basis. The classic example is a Section 338 election that treats a stock purchase as an asset acquisition for U.S. purposes. The regulations also reach partnership interest acquisitions with a Section 754 election in effect and other transactions that produce a U.S.-foreign basis mismatch.³

Section 901(m) runs first. It calculates a “disqualified portion” of the foreign tax, the fraction attributable to the U.S. basis step-up, and permanently bars that portion from the foreign tax credit. The disqualified tax may still be deductible but never creditable.⁴ The basis difference is allocated over the asset’s U.S. cost recovery period, so the disqualification phases in rather than hitting all at once.

Section 909 then acts as a second check. Foreign taxes that survive the Section 901(m) cut can still be suspended if the acquisition also produced a splitter arrangement. The most common overlap involves a covered asset acquisition of a reverse hybrid, where the basis step-up and the entity classification mismatch both touch the same income. In that case Section 901(m) strips out the disqualified portion and Section 909 freezes whatever remains until the related income enters the U.S. tax base. The ordering matters: finish the Section 901(m) calculation before determining what is left for Section 909 to suspend.

What Section 909 Does Not Reach

Section 909 itself has no dollar threshold. If a splitting event occurs, the tax is suspended regardless of amount. The Section 901(m) rules for covered asset acquisitions do provide two safe harbors that can short-circuit the analysis for the CAA portion. A basis difference for any single relevant foreign asset is disregarded if its absolute value is less than $20,000, and the entire CAA is exempt from Section 901(m) if the total basis differences across all relevant foreign assets are less than the greater of $10 million or 10 percent of total U.S. basis.⁵ These thresholds apply only to the CAA context. A reverse hybrid, loss-sharing, or hybrid instrument arrangement that does not involve a CAA gets no safe harbor.

Ordinary timing differences also sit outside Section 909. A mismatch in depreciation methods between the U.S. and a foreign system does not create a splitting event, because the same entity is both paying the foreign tax and recognizing the income. Section 909 targets arrangements where the tax and the income land on different persons, not situations where one person simply recognizes them on different schedules.

Pre-2011 Taxes

Section 909 was enacted in 2010 and generally applies to foreign taxes paid or accrued in taxable years beginning after December 31, 2010. The regulations also reach backward. Pre-2011 split taxes, meaning foreign taxes paid in connection with splitter arrangements in earlier years, are generally subject to suspension as of the first day of the taxpayer’s first post-2010 taxable year, and the suspended taxes are removed from the post-1986 foreign income tax pools.⁶

Several categories of pre-2011 taxes escape suspension entirely: taxes already deemed paid under former Section 902 or Section 960 before the post-2010 effective date, taxes where the related income was already recognized before that date, and taxes paid in taxable years beginning before January 1, 1997.⁶ For taxpayers with legacy international structures, this backward reach means the Section 909 analysis does not start cleanly in 2011. Historical tax pool data may need to be traced through earlier years to find splitter arrangements still carrying forward.

1
Office of the Law Revision Counsel. 26 USC 909 – Suspension of Taxes and Credits Until Related Income Taken Into Account
2
GovInfo. 26 CFR 1.909-2 – Splitter Arrangements
3
eCFR. 26 CFR 1.901(m)-2 – Covered Asset Acquisitions and Relevant Foreign Assets
4
Office of the Law Revision Counsel. 26 USC 901 – Taxes of Foreign Countries and of Possessions of United States
5
eCFR. 26 CFR 1.901(m)-7 – De Minimis Rules
6
eCFR. 26 CFR 1.909-6 – Pre-2011 Foreign Tax Credit Splitting Events