Business Combinations and Investments in Associates
When one company holds a stake in another, the accounting depends on how much influence it has. Control means full consolidation (combine 100% of the other firm, recognising goodwill and non-controlling interests); significant influence or joint control means the equity method (a single line). This lesson works through both, shows how each distorts margins and leverage, and asks the harder questions: is goodwill even an asset, and does M&A create value?
On this page
The accounting method follows the relationship, and the relationship follows the degree of influence — from full control down to significant influence and joint control.
Learning outcomes
- Classify an investment as a subsidiary, associate or joint arrangement.
- Distinguish percentage of control from percentage of interest.
- Prepare a full consolidation, computing goodwill and non-controlling interests.
- Apply the equity method and contrast its statement effects with consolidation.
- Critically assess whether goodwill is an asset and whether M&A creates value.
Group relationships
Subsidiary — control (IFRS 10): three cumulative conditions — power over the investee (ability to direct relevant activities, via voting rights or contracts), exposure to variable returns, and the ability to use that power to affect returns. Notably, there is no quantitative threshold. Associate — significant influence (IAS 28): typically ≥20% of voting power, evidenced by board representation, policy participation, material transactions, managerial interchange or essential technical information. Joint arrangement — joint control (IFRS 11): contractually agreed sharing of control requiring unanimous consent (a joint operation gives rights to assets/obligations; a joint venture, rights to net assets).
Control vs interest
Two different percentages do two different jobs. The percentage of control (voting rights held) determines the consolidation method. The percentage of interest (the economic claim on the investee's equity, including net income) determines the majority/minority split.
Control ≠ interest in a chain
P owns 30% of C1 and 43% of C2 directly; C1 owns 40% of C2. What are P's control and interest in C2?
Show solution
Control = 43% — only P's direct voting rights count (the 40% held via C1 is not P's vote unless P controls C1). At 43% < 50% and no other control feature, C2 is not a subsidiary. Interest = 55% \(=43\%+(30\%\times40\%)\) — the economic claim flows through the chain. Control drives consolidation; interest drives how equity and income are split.
Control 43% (not consolidated); interest 55%Full consolidation
Consolidation evolved from the need to monitor performance and debt-contract compliance (Whittred, 1987): creditors must stop assets being shuffled to unconsolidated related parties, and shareholders cannot rely on discretionary inter-company dividends. Under control, the parent integrates 100% of the subsidiary's assets and liabilities into the consolidated balance sheet (and 100% of its revenues and expenses), replacing the "investment in subsidiary" line — even when it owns less than 100%.
Goodwill and non-controlling interests
When the price paid differs from the book value acquired, the gap splits into valuation differences (fair value − book value of identifiable net assets, which may surface previously unrecognised intangibles) and goodwill (the residual):
Non-controlling (minority) interests are presented within equity, separately from the parent's owners (IFRS 10 §22): the minority's claim on the subsidiary's net assets and earnings.
Acquirer buys 60% of Target
Acquirer pays 10,000 for 60% of Target, whose equity is 16,000 (share capital 10,000, reserves 5,000, net income 4,000); assume no valuation differences. Find goodwill, the minority interest, and group net income (Target net income 4,000).
Show solution
Goodwill \(=10{,}000-60\%\times16{,}000=10{,}000-9{,}600=400\). Non-controlling interest \(=40\%\times(\text{share capital }10{,}000+\text{reserves}+\text{NI }= 25{,}000\ \text{total equity ex-acq})\) — here \(40\%\times(15{,}000+10{,}000)=10{,}000\). Minority share of income \(=40\%\times4{,}000=1{,}600\), so group net income \(=11{,}000-1{,}600=9{,}400\). Consolidated share capital is only the Acquirer's (40,000); the 10,000 "investment in Target" is eliminated; consolidated reserves = Acquirer's 21,000 + 60%×4,000 = 23,400; and a consolidation reserve of 3,000 arises when consolidation post-dates acquisition \(\big(=60\%\times(15{,}000+(10{,}000-4{,}000))-9{,}600\big)\).
Goodwill 400; NCI 10,000; group net income 9,400The equity method
For an associate (≈20–50%) or a joint venture, there is no integration of the financial statements. The investment is recognised at cost and then adjusted for the investor's share of the investee's post-acquisition change in net assets (share of income − dividends received). It is called "one-line consolidation": the investor's share of the investee's net assets appears as a single balance-sheet line ("investment in associates"), and its share of results as a single income-statement line ("share in results of associated companies").
Equity method vs full consolidation
Run the same Acquirer/Target numbers through the equity method (for illustration only — 60% would really require consolidation) and the contrast is stark: total assets are far lower (96,100 vs 116,300), there is no minority interest and no grossed-up debt — yet group net income is identical (9,400), because the investor's 60% share of Target's profit (2,400) plus Acquirer's 7,000 equals the same bottom line.
The associate's income is in group net income but not in group sales — so net profit margins look higher than economic reality. And the associate's assets and (crucially) liabilities are off the group balance sheet — so leverage and debt ratios look lower. Full consolidation grosses everything up and shows the NCI, which is more complete — but it is not automatically more transparent: Bonacchi et al. (2018) and Beuselinck et al. (2019) show parents orchestrate group profits by pushing earnings management down into subsidiaries.
Is goodwill an asset?
Clor-Proell et al. (2022), responding to the FASB, decompose recognised goodwill into three parts: (1) core goodwill — the synergy from combining the two firms' assets (genuinely an asset); (2) measurement errors — e.g. over-allocating the price to goodwill to dodge amortising finite-lived intangibles (asset?); and (3) overpayment — paying more than the business is worth (not an asset). Because goodwill is not amortised, frequent, large impairments have led to questioning the rules — the impairment mechanics covered earlier in the course.
Does M&A create value?
Dargenidou et al. (2016, commissioned by the ICAEW) find share-price evidence that acquisitions destroy value: about two-thirds of UK M&A events destroy shareholder value over the 36 months after the deal. Managers of over-valued firms may still act rationally by using inflated stock to buy cheaper targets. Accounting-performance evidence is kinder — it points to synergies and potential value creation — but the "loser" group shows little post-deal synergy. The takeaway: current goodwill accounting is "anything but conservative," and it is unrealistic to expect financial reporting alone to fix managers' real-world M&A decisions.
Influence dictates method: control → full consolidation (combine 100%, recognise goodwill = cost − interest in fair value, and present non-controlling interests in equity), while significant influence/joint control → the equity method (one line). Watch the two percentages — control drives the method, interest drives the split. The equity method flatters margins (associate profit without its sales) and understates leverage (associate liabilities off-balance-sheet), while consolidation is fuller but still gameable through subsidiaries. And the research is sobering: much recognised goodwill is overpayment, not an asset, and most M&A destroys shareholder value.