Indirect Ownership Examples: Attribution, Chains, and Thresholds

Indirect ownership examples all start with the same arithmetic: multiply your ownership percentage at each link in a chain. If you own 70% of Corporation A and Corporation A owns 40% of Corporation B, you indirectly own 28% of Corporation B, even though your name appears nowhere on Corporation B’s records. From that simple multiplication, federal tax law layers on attribution rules for partnerships, trusts, family members, options, and foreign entities, and the resulting percentage decides who controls what for controlled group testing, S corporation eligibility, SEC reporting, and more.

The Basic Multiplication

Start with the cleanest case. You own 80% of Entity A. Entity A owns 60% of Entity B. Your indirect interest in Entity B is 48%. Extend the chain: Entity B owns 50% of Entity C, and your indirect interest in Entity C drops to 24%. Each link dilutes the percentage.

The look-through doesn’t always run. Under many attribution rules, the intermediate entity must own at least 50% of the next entity in the chain before the calculation kicks in. If the intermediate stake falls below that threshold, the chain of attribution may stop entirely. Structures that hover right around the 50% line attract scrutiny for that reason.

Corporate Chain Example

Corporation A holds 70% of Corporation B, and Corporation B holds 40% of Corporation C. Corporation A’s indirect ownership of Corporation C is 28%. That figure matters because it determines whether the three corporations form a controlled group and whether certain deductions survive.

Attribution also runs the other direction. Under IRC Section 318, if you own 50% or more of a corporation’s stock by value, the corporation is treated as owning whatever stock you personally hold in other companies, and you are treated as owning a proportionate share of any stock the corporation holds.¹ The two-way flow keeps people from parking ownership inside a corporation to duck thresholds they’d otherwise cross.

Partnership Example

Which partnership attribution rule applies depends on the tax question you’re answering, and this is where practitioners slip. Under the general constructive ownership rules of IRC Section 318, stock owned by a partnership is attributed proportionately to its partners. A partnership owns 100 shares of a company, you’re a 40% partner, and you’re treated as owning 40 shares. The statute doesn’t distinguish between capital interest and profits interest for this purpose.¹

The controlled group rules under IRC Section 1563 use a different test. Attribution from a partnership is based on whichever is greater: your share of capital or your share of profits. A partner with a 60% capital interest but only a 45% profits interest has ownership attributed based on the 60% capital figure. A partner with a 30% capital interest but a 55% profits interest uses the 55% profits figure.²

Applying the wrong method to a controlled group analysis or a stock redemption can produce a materially different ownership percentage and a wrong conclusion about who controls what.

Trust Examples

Trust attribution follows two paths depending on the type of trust. For non-grantor trusts, a beneficiary is treated as owning a proportionate share of the trust’s holdings based on actuarial interest. A trust holds 100% of a corporation’s stock, you have a 30% actuarial interest in the trust, and you’re deemed to own 30% of the corporation.³

Grantor trusts are simpler. Because the grantor is treated as owner of the trust’s assets for income tax purposes, 100% of whatever the trust holds is attributed back to the grantor. No proportional calculation. Set up a revocable trust that owns stock in a family business, and you still own that stock for every attribution purpose that matters.³

Family Attribution Examples

Federal tax law treats certain family members as a single economic unit. Under IRC Section 318, you’re treated as owning the stock held by your spouse, children, grandchildren, and parents. Siblings, in-laws, and grandparents are not part of this group.¹

A straightforward case: a father owns 30% of a private corporation, and his daughter owns 20% directly. Under family attribution, the father is treated as owning 50% (his 30% plus the daughter’s 20%), and the daughter is treated as owning 50% (her 20% plus the father’s 30%). Neither may think of themselves as a 50% owner, but the IRS does.

Family rules stack on top of entity attribution, and the stacking is where the real complexity lives. Husband H owns 100% of Corporation X, and Corporation X owns 40% of Corporation Y. Wife W owns 10% of Corporation Y directly. H’s indirect ownership of Corporation Y is 40% through Corporation X. W’s total attributed ownership of Corporation Y is 50%: her direct 10% plus the 40% attributed through her husband. That combined figure can push her over a regulatory threshold she’d clear on her own.¹

One guardrail keeps this from spiraling. The sideways attribution rule prevents ownership constructively attributed to one family member from being re-attributed to another. If a child’s stock is attributed to the father, that same stock cannot then hop from the father to the mother. Without the rule, every family member would end up constructively owning every other family member’s stock through a chain of attributions.¹

Stock Options as Constructive Ownership

Under IRC Section 318, if you hold an option to buy stock, you’re treated as already owning it. The stock doesn’t have to be in your name. You don’t have to have exercised the option. The right to acquire the stock is enough. The rule even applies to an option to acquire an option, cascading through each layer until you reach the underlying stock.¹

Ordering matters when option attribution and family attribution overlap. If stock could be attributed to you under either the family rules or the option rules, the option rules win. Option-attributed stock can be re-attributed to entities you own, while family-attributed stock cannot always be passed along the same way, so the ordering changes the outcome of real compliance calculations.

Foreign Entity Chain Example

Indirect ownership through foreign entities follows a parallel framework under IRC Section 958. Stock owned by a foreign corporation, foreign partnership, or foreign trust is attributed proportionately to its shareholders, partners, or beneficiaries. Own 60% of a foreign holding company that owns 100% of a foreign operating subsidiary, and you indirectly own 60% of the subsidiary.⁴

Two features separate the foreign rules from the domestic version. Attribution flows through successive tiers of foreign entities but stops at the first U.S. person in the chain. And the modified constructive ownership rules under IRC 958(b) include a carve-out: stock owned by a nonresident alien is not attributed to a U.S. citizen or resident alien family member. That prevents foreign family members’ holdings from pulling U.S. taxpayers into controlled foreign corporation reporting they wouldn’t otherwise face.⁵

A controlled foreign corporation exists when U.S. shareholders collectively own more than 50% of the foreign corporation’s voting power or value, with a U.S. shareholder defined as any U.S. person who owns at least 10% counting both direct and indirect holdings. Once CFC status attaches, U.S. shareholders may owe tax on certain categories of the foreign corporation’s income regardless of whether any dividends are actually paid.⁵

Thresholds That Turn a Percentage Into a Consequence

Attribution math produces a number. Whether the number matters depends on which threshold it crosses.

A controlled group under IRC Section 1563 exists when corporations are linked by at least 80% common ownership in a parent-subsidiary chain, or when five or fewer individuals, estates, or trusts own more than 50% of each corporation with identical ownership taken into account. Controlled group members must share the Section 179 expensing deduction rather than each claiming the full amount, and they must aggregate their employees when testing whether retirement plans satisfy coverage and nondiscrimination requirements.⁶⁷

An S corporation can have no more than 100 shareholders, and only individuals, certain trusts, and estates qualify. Look-through rules identify the actual beneficial owners underneath a trust. A trust that appears to be a single shareholder might count as multiple shareholders once the beneficiaries are identified, pushing the corporation over the limit and terminating the S election. A Qualified Subchapter S Trust is limited to one income beneficiary and must distribute all income annually; an Electing Small Business Trust can have multiple beneficiaries with the trustee controlling distributions. If a trust that doesn’t qualify as a QSST or ESBT holds S corporation stock, or if a corporation or partnership ends up as a shareholder through a chain of ownership, the S election terminates, and the termination can be retroactive to the date the ineligible ownership began.⁸

For publicly traded companies, any person or group that acquires beneficial ownership of more than 5% of a class of equity securities must file a Schedule 13D or 13G with the SEC within five business days. The filing requirement applies to indirect ownership: shares held through subsidiaries, family members acting together, or investment vehicles all count toward the 5% threshold.⁹

Private foundations face excise taxes on transactions with disqualified persons, and indirect ownership decides who falls into that category. Under IRC Section 4946, a corporation becomes a disqualified person if the foundation’s substantial contributors, managers, and their family members collectively own more than 35% of its voting power. The same 35% threshold applies to partnerships (measured by profits interest) and trusts (measured by beneficial interest), and the threshold can be crossed through several layers of indirect holdings.¹⁰¹¹

OFAC applies a 50 Percent Rule for sanctions enforcement. Any entity owned 50% or more in the aggregate by one or more blocked persons is itself treated as blocked, even if the entity never appears on a sanctions list, and ownership flowing through intermediate entities that are themselves 50% or more owned by the blocked person counts.¹² A company dealing with an apparently clean counterparty can violate sanctions law if the counterparty is indirectly majority-owned by a sanctioned individual through a chain of holding companies.

Before relying on any ownership percentage in a filing, a tax election, or a compliance memo, run the calculation under the specific attribution rule that governs the question in front of you. The same underlying structure can produce different percentages under Section 318, Section 1563, Section 958, and Section 4946, and the right answer is the one produced by the rule that applies.

1
Office of the Law Revision Counsel. 26 U.S. Code 318 – Constructive Ownership of Stock
2
Office of the Law Revision Counsel. 26 U.S. Code 1563 – Definitions and Special Rules
3
CCH AnswerConnect. 26 U.S.C. 1563(e) – Constructive Ownership
4
Office of the Law Revision Counsel. 26 USC 958 – Rules for Determining Stock Ownership
5
Internal Revenue Service. IRC 958 Rules for Determining Stock Ownership
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Office of the Law Revision Counsel. 26 USC 1563 – Definitions and Special Rules
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eCFR. 26 CFR 1.179-2 – Limitations on Amount Subject to Section 179 Election
8
Internal Revenue Service. Instructions for Form 2553 – Election by a Small Business Corporation
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eCFR. 17 CFR 240.13d-1 – Filing of Schedules 13D and 13G
10
Office of the Law Revision Counsel. 26 U.S. Code 4946 – Definitions and Special Rules
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Internal Revenue Service. Attribution of Ownership Rules – Definition of Disqualified Persons
12
Office of Foreign Assets Control. Entities Owned by Blocked Persons (50% Rule)