What it means
Shareholders of a target will not sell for what their shares are already worth; they need an incentive, and the acquirer needs to outbid other possible buyers and overcome the board's duty to reject inadequate offers. The premium is that incentive.
Typical premiums for listed companies run between 20% and 50%, higher in competitive auctions, for small targets, and in sectors where control is especially valuable, and lower for large targets and for friendly deals where the target's board has recommended the offer. From the acquirer's point of view the premium must be earned back.
The target's standalone value already belongs to the target's shareholders; the acquirer receives it in exchange for paying it. What the acquirer gains is the value of control (the ability to run the business differently) and the synergies (cost savings, revenue gains, tax benefits, financing advantages) that come from combining the businesses.
If the present value of those benefits exceeds the premium plus the costs of doing the deal and integrating, the acquirer's shareholders gain; if not, the acquirer has transferred wealth to the target's shareholders. Because the market prices this logic immediately, an acquirer's share price often falls on announcement of a deal, particularly when the premium is high or the synergies are vague.
Studies of large samples of acquisitions consistently find that target shareholders capture most of the value created and acquirer shareholders capture little or none on average, with the size of the premium the strongest predictor of a poor outcome for the buyer. The premium also has accounting consequences.
It flows into the purchase price, and the part of the price that cannot be attributed to identifiable assets becomes goodwill. A large premium usually means large goodwill, and if the synergies fail, that goodwill is impaired, making the overpayment visible in the acquirer's accounts.
In practice
Real-world examples.
Example
A pharmaceutical group pays a 60% premium for a biotech company with a single late-stage drug, because the drug's value depends on approval and the group's distribution can capture it fully.
Example
A bank pays a 15% premium for a rival in a friendly merger, with the two boards agreeing that a low premium and a share exchange share the synergies fairly.
Example
A private equity bidder walks away from an auction when the premium implied by the leading bid exceeds the value of any plausible improvement plan.
Think of it
“An acquisition premium is like paying more for a restaurant than its current value because you believe you can make it more profitable.
Formula
Calculation
Acquisition Premium (%) = (Offer Price per Share minus Pre-Announcement Share Price) / Pre-Announcement Share Price x 100%
Maximum Justifiable Premium = Present Value of Synergies minus Transaction and Integration Costs
Worked example. A listed logistics company's shares closed at $24.00 on the day before an acquirer announced an offer of $32.40 per share in cash. The company has 50 million shares.
- Premium per share = $32.40 minus $24.00 = $8.40
- Premium = $8.40 / $24.00 = 35%
- Total premium paid = $8.40 x 50 million = $420 million
- Total price = $32.40 x 50 million = $1,620 million
The acquirer expects synergies of $45 million a year after tax, starting in year two and continuing indefinitely. Its cost of capital is 8%, and transaction plus integration costs are $60 million.
- Present value of synergies = ($45 million / 8%) discounted one year = $562.5 million / 1.08 = $521 million
- Maximum justifiable premium = $521 million minus $60 million = $461 million
- Value created for the acquirer at the actual premium = $461 million minus $420 million = $41 million
The deal is worth doing on these assumptions, but 91% of the synergy value is being handed to the target's shareholders. If synergies come in at $35 million a year rather than $45 million, the present value falls to $405 million and the acquirer loses $75 million on the deal.
If the acquirer pays in shares rather than cash, the target's shareholders share in both the synergies and the risk of their non-delivery, which is one reason share-funded deals are common when the premium is high.Case study
Seen in the real world.
A consumer products company launched a hostile bid for a competitor at a 30% premium. The target's board rejected it, a second bidder emerged, and after three rounds the original bidder won at a 62% premium, $900 million above the target's pre-bid value. The chief executive told shareholders that synergies of $80 million a year justified the price.
The acquirer's shares fell 14% on the day the final price was announced. Integration delivered $55 million of savings, but two of the target's brands lost distribution as retailers rationalised ranges after the merger, and the combined revenue fell short of plan by 8%.
Three years later the company wrote off $600 million of goodwill and the chief executive departed. An analyst's calculation at the time of the final bid had shown that the premium required synergies of $75 million a year with no revenue loss just to break even; the company had bid past its own valuation because it did not want to lose.
Watch out
Common mistakes.
- Measuring the premium against a share price already inflated by bid rumours. Use the undisturbed price before speculation began.
- Justifying the premium with synergies that have not been costed, timed and risk-adjusted.
- Increasing the bid in an auction beyond the premium the synergies can support. Losing an auction costs nothing; winning one at the wrong price costs for years.
Questions
People also ask.
What is a typical acquisition premium?
Between 20% and 50% for listed targets, varying with sector, deal size, competition and whether the bid is friendly or hostile.
Who benefits from the acquisition premium?
The target's shareholders receive it. The acquirer's shareholders benefit only if the synergies and control value exceed it.
Does the premium appear in the accounts?
Indirectly. It raises the purchase price, and the portion not attributable to identifiable assets becomes goodwill, which is impaired if the acquisition underperforms.
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