Last reviewed: July 2026.
A parent undertaking is identified by control, not simply by owning more than half of another company. The analysis considers decision-making power, variable returns and the link between power and returns, together with applicable company-law definitions.
This guide explains direct and indirect control, de facto control, parent versus associate classification, consolidated and separate accounts, reassessment and disclosures.
What a parent undertaking is
A parent undertaking is an entity that controls one or more subsidiary undertakings. Under IFRS 10, a parent controls an investee when it has power over relevant activities, exposure or rights to variable returns, and the ability to use its power to affect those returns.
Company-law definitions may also refer to majority voting rights, rights to appoint or remove a majority of the board, dominant influence, shareholder agreements or unified management. The legal and IFRS analyses often align but should be documented separately.
Power over relevant activities
Power arises from existing rights that give the current ability to direct activities that significantly affect returns. Voting rights are common, but contractual rights, decision-making arrangements and substantive potential voting rights may also create power.
Protective rights, such as a lender’s veto over fundamental changes, do not by themselves create control. Rights must be substantive, meaning the holder has the practical ability to exercise them when decisions need to be made.
Variable returns and the link to power
Returns can be positive, negative or both and may include dividends, changes in investment value, fees, cost savings, synergies and access to resources. Exposure to returns alone is insufficient; the investor must also be able to use power to affect those returns.
An agent may make decisions on behalf of others without controlling the investee. The principal-versus-agent assessment considers scope of authority, rights held by other parties, remuneration and the decision maker’s exposure to returns.
Direct, indirect and de facto control
A parent may control a subsidiary directly or through other subsidiaries. The group boundary includes lower-level subsidiaries, so the ultimate parent’s analysis must trace rights through the ownership chain.
Control can exist without a majority holding when other shareholders are widely dispersed and the investor has the practical ability to direct relevant activities. Historical voting patterns, attendance, agreements and potential voting rights are considered.
Parent, associate and passive investment
If the investor has significant influence but not control, the investee is generally an associate under IAS 28. Joint control leads to joint-arrangement analysis. A passive investment without control, joint control or significant influence is normally accounted for under IFRS 9.
The percentage held is therefore a starting point, not the conclusion. A 51% holding may not control if rights are not substantive, while a holding below 50% may control in some circumstances.
Consolidated and separate financial statements
A parent that is required to consolidate combines the parent and subsidiaries as one economic entity, eliminating intragroup balances and transactions and recognising non-controlling interests. Uniform accounting policies and appropriate reporting dates are required.
In separate financial statements, investments in subsidiaries are accounted for under IAS 27 using an permitted basis such as cost, IFRS 9 or the equity method. Separate accounts do not replace consolidated accounts when consolidation is required.
Worked control assessment
Company P owns 45% of Company S. The remaining shares are held by thousands of investors, no other shareholder holds more than 1%, and P has consistently appointed the board and directed operating policy. These facts may indicate de facto control despite ownership below 50%.
If a shareholder agreement gives another investor substantive rights to direct the relevant activities, P may not control S. The assessment must examine actual rights and decision-making, not only historical behaviour or economic dependence.
Reassessment and disclosures
Control is reassessed when facts and circumstances change, including ownership transactions, expiry of options, changes in agreements, new financing or changes in relevant activities. A gain or loss of control can create significant accounting consequences.
IFRS 12 requires disclosures about judgements used to determine control and the nature and risks of interests in other entities. Group structure charts, legal documents and board-rights schedules support both accounting and governance.
Control when decision-making is delegated
A parent may delegate day-to-day operations to management without losing control if it retains substantive rights over the relevant activities. Conversely, an investment manager with extensive discretion may act as an agent for investors rather than control the fund or vehicle.
The assessment considers removal rights, approval rights, the decision maker’s remuneration and its economic exposure. Labels such as manager, sponsor or founder do not determine the answer; the contractual and practical rights do.
Practical review checklist
- Map all direct and indirect ownership interests.
- Identify the activities that significantly affect returns.
- Evaluate substantive voting and contractual rights.
- Distinguish protective rights from decision-making power.
- Assess exposure to variable returns and the power-return link.
- Consider de facto control and potential voting rights.
- Reassess control when agreements or facts change.
- Document conclusions and IFRS 12 disclosures.
Related Accounting Support guides
Authoritative references
- IFRS Foundation: IFRS 10 Consolidated Financial Statements
- HM Revenue & Customs: Parent and subsidiary undertakings definitions
This educational guide explains general accounting principles. Apply the reporting framework, law and market rules relevant to the entity and jurisdiction.