Goodwill
Goodwill arises when one company buys another for more than the fair value of its identifiable net assets. The excess lands on the acquirer’s balance sheet as an intangible asset and stays there indefinitely, tested each year for impairment rather than depreciated.
It is, in effect, the accounting record of a deal premium.
The math
An acquirer pays $500M for a target whose identifiable net assets are worth $300M, booking $200M of goodwill. Years later the acquired unit underperforms and auditors force a $150M impairment.
Shareholders’ equity of $600M drops to $450M overnight, and a stock that traded at 1.5x book, a $900M market cap, suddenly shows 2.0x book with no change in price. Nothing operational happened that day; the balance sheet simply confessed that $150M of the purchase price bought expectations that never materialized.
| Before impairment | After | |
|---|---|---|
| Shareholders’ equity | $600M | $450M |
| Market cap | $900M | $900M |
| Price to book | 1.5x | 2.0x |
Investors who anchored on the old book value were valuing hope at par.
The trap
Impairments are lagging indicators, announced long after the deal has visibly failed, so waiting for the write-down means learning last what field evidence showed first. The subtler danger sits with serial acquirers: goodwill stacking up from deal after deal can grow to dominate the asset side, meaning reported equity and returns on it rest on management’s own optimism about its shopping.
When a third of the balance sheet is deal premium, book-based ratios describe past acquisitions rather than the business.
The move
Measure goodwill as a share of total assets and of equity before trusting any balance sheet ratio, and compute returns both with and without it: return on tangible capital shows how the operations perform, return including goodwill shows how well management spends shareholders’ money on deals. Watch segment results for acquired units, since deterioration there foreshadows impairments.
Serial acquirers earn scrutiny in proportion to the goodwill they carry.