A subsidiary company is a company that is controlled by another company, known as the parent company (or holding company). Control is usually established through owning more than 50% of the voting shares, but it can also arise through other means of dominant influence.

Definition Under the Companies Act 2006

Section 1159 of the Companies Act 2006 defines a subsidiary. Company A is a subsidiary of Company B if Company B:

  • Holds a majority of the voting rights in Company A, or
  • Is a member of Company A and has the right to appoint or remove a majority of its board of directors , or
  • Is a member of Company A and controls alone, pursuant to an agreement with other members, a majority of the voting rights

A wholly-owned subsidiary is one where 100% of the shares are held by the parent company (or by another wholly-owned subsidiary of the parent).

Types of Control

Level of OwnershipRelationship
Over 50% of voting sharesSubsidiary
100% of sharesWholly-owned subsidiary
20%–50% of voting sharesAssociate (significant influence, not control)
Under 20%Simple investment (usually)

Why Companies Use Subsidiaries

ReasonDetail
Limited liabilityEach subsidiary is a separate legal entity with its own liabilities
Risk isolationA subsidiary’s debts do not automatically fall on the parent
Operational separationDifferent business activities can be run independently
Tax planningGroup relief allows losses in one company to offset profits in another
Regulatory complianceSome activities require a separate legal entity (e.g. regulated financial services)
Joint venturesA subsidiary can be partly owned with a third-party partner
AcquisitionsBuying a company creates a parent-subsidiary relationship automatically

Setting Up a Subsidiary

A parent company can create a subsidiary by:

  1. Incorporating a new company at Companies House with the parent as the sole shareholder
  2. Acquiring a majority stake in an existing company through a share purchase

Registration Requirements

The subsidiary is a separate company and must:

Consolidated (Group) Accounts

A parent company that has subsidiaries must generally prepare consolidated financial statements that combine the financial results of the parent and all its subsidiaries as if they were a single entity.

Exemptions from Consolidation

Small groups are exempt from preparing consolidated accounts if the group meets at least two of the following conditions (on a net or gross basis):

ConditionNet ThresholdGross Threshold
Turnover£10.2 million£12.2 million
Balance sheet total£5.1 million£6.1 million
Employees5050

A parent company also does not need to prepare group accounts if it is itself a subsidiary of a larger group that prepares consolidated accounts (intermediate parent exemption).

What Consolidated Accounts Show

ComponentDetail
Group turnoverCombined revenue (eliminating inter-company sales)
Group profitCombined profit (eliminating inter-company transactions)
Group assetsCombined assets (eliminating inter-company balances)
GoodwillThe premium paid for subsidiaries above their net asset value
Non-controlling interestThe minority shareholders’ portion of partly-owned subsidiaries

Tax Grouping

Subsidiaries within a group can benefit from several UK tax provisions:

Group Relief

Companies in a 75% group (parent holds at least 75% of the subsidiary’s ordinary share capital) can transfer trading losses between group members. A loss-making subsidiary can surrender its losses to a profitable parent (or sibling), reducing the group’s overall corporation tax bill.

Capital Gains Group

Companies in a 75% group (with additional conditions) can transfer assets between group members without triggering a capital gains tax charge. The receiving company takes over the transferring company’s base cost.

VAT Grouping

Companies under common control can register as a VAT group, meaning:

  • Inter-company supplies within the group are disregarded for VAT purposes
  • One VAT return is filed for the entire group
  • Each member is jointly and severally liable for the group’s VAT obligations

Parent Company Obligations

The parent company must:

  • Disclose the existence of subsidiaries in its own accounts
  • Prepare consolidated accounts (unless exempt)
  • Record its investment in subsidiaries at cost or fair value in the parent’s individual accounts
  • Declare People with Significant Control relationships where applicable

Subsidiary Directors and Governance

A subsidiary has its own board of directors, but in practice:

  • The parent often appoints the subsidiary’s directors
  • The parent may set the subsidiary’s strategy and budget
  • Directors of the subsidiary still owe their statutory duties to the subsidiary (not the parent)
  • A director must act in the subsidiary’s best interests, which may occasionally conflict with the parent’s wishes

Accounting for the Investment

In the parent company’s individual accounts:

TransactionDebitCredit
Acquiring a subsidiaryInvestment in subsidiary (balance sheet)Bank / consideration
Receiving dividends from subsidiaryBankDividend income (P&L)
Impairment of investmentImpairment loss (P&L)Investment in subsidiary

In the consolidated accounts, the investment is replaced by the subsidiary’s individual assets and liabilities.

Subsidiary vs Branch

FeatureSubsidiaryBranch
Legal statusSeparate legal entityPart of the parent company
LiabilityLimited to the subsidiaryParent bears full liability
TaxationSeparate CT returnIncluded in parent’s CT return
FilingSeparate accounts at Companies HouseNo separate filing
FormationIncorporation or acquisitionOpening a new location