SOTP Valuation: Accounting for Subsidiary Stakes and Shared Costs
Sum-of-the-parts valuation highlights differences among businesses. Learn to combine operating and equity values while avoiding double-counted subsidiaries and omitted corporate costs.
SOTP values individual business segments or equity holdings using suitable methods, then adds them together. It can reduce the problem of applying one multiple to different businesses, but the scope of the sum must be consistent. A simple total without adjustments for debt, corporate costs, and ownership percentages may not represent common-equity value.
Label each component as operating value or equity value
Multiplying segment EBITDA by an EV multiple generally produces operating value. Multiplying a listed subsidiary’s market capitalization by the ownership percentage produces equity value, with the subsidiary’s debt burden already reflected in the market price. You can combine the two, but define the boundaries so the same debt is not deducted twice in the final adjustment. For a simple company, you can first add all segment operating values and then deduct consolidated net debt. If some subsidiaries are included directly at equity value, reconsider simply subtracting debt from the consolidated balance sheet.
Locate intercompany transactions and corporate costs
Valuing revenue supplied by one segment to another twice as though it were external revenue can inflate the total. Also check whether intercompany transfer prices shift earnings between segments. If corporate human resources, accounting, research, and brand management costs are absent from all segments, deduct their present value separately or allocate them consistently. An assumed actual breakup and sale may also require the costs of replacing shared resources and paying taxes. Choosing only the most favorable peer multiple for each segment can also make the sum overly optimistic.
Do not apply a holding-company discount without a reason
A gap between the sum of subsidiary holdings and a holding company’s price does not automatically close. Examine how funds reach shareholders, taxes, management expenses, capital allocation, and governance. Before applying a customary discount, check whether the same costs are already included in cash flows or net-debt adjustments. SOTP is closer to a map showing where each business’s value originates. Unless separate listings or sales are confirmed, avoid describing the calculated component values as amounts that can immediately be converted into cash.
Worked example
Hypothetical example: A wholly owned manufacturing business has operating value of KRW 70 billion. A separately valued subsidiary has total equity value of KRW 50 billion, and the ownership stake is 40%, worth KRW 20 billion. Deducting manufacturing and corporate net debt of KRW 15 billion and the KRW 5 billion present value of corporate costs absent from segment valuations gives combined equity value of 70 + 20 − 15 − 5 = KRW 70 billion, with amounts in billions of won. Do not deduct again the debt of the subsidiary already included at equity value.
What to check
- Have you labeled each business valuation as operating value or equity value?
- Have you correctly treated ownership percentages and noncontrolling interests?
- Have you included intercompany transactions, corporate costs, and shared assets?
- Have you avoided adjusting subsidiary debt or cash twice?
Sources and primary materials
This is educational material about research methods. For an actual company decision, verify the filings and primary sources for the relevant period.