Before the Price: Testing the Acquisition Thesis

By Mark | strategy | 7 min read

An acquisition is a wager on a particular future under a particular owner. Confirming the seller's historical results is necessary, but those results do not establish that the buyer can create the value described in its investment case. The distinction matters because an accurate set of accounts can coexist with a weak acquisition thesis. A target can have loyal customers, sound contracts, and capable management while offering little advantage to the buyer that intends to own it.

The central decision before signing is therefore not simply whether the target is as represented. It is whether the proposed combination still merits its price, risk, and use of management attention after the buyer has tested the assumptions that make the combination attractive. This is a proposed decision framework, not a substitute for financial, legal, tax, commercial, or technical diligence. Those disciplines supply evidence. The investment thesis determines which evidence is decisive.

State the Thesis So It Can Fail

Deal teams often describe an acquisition in terms that cannot be tested: expand the platform, gain strategic capability, or accelerate growth. A more useful thesis specifies how ownership changes outcomes. It identifies the customers who will buy more, the operating costs that can actually be removed, the capabilities that can be combined, the time required, and the resources needed to make each result possible.

For each expected source of value, write down the causal chain. If the thesis depends on selling a target's product to the buyer's customers, does the buyer have access to the relevant decision makers? Can its sales team explain and support that product? Are purchasing cycles and contracting requirements compatible? Will the buyer's customers accept the target's product without features that have not yet been built? A projection of additional revenue is not a causal explanation.

The thesis should also identify observations that would change the recommendation. If the buyer would proceed regardless of what customer interviews, product testing, or integration planning reveal, the exercise has become confirmation rather than diligence. A precommitted decision rule helps resist the momentum of a competitive process. It need not be mechanical. Directors and executives can exercise judgment while still recording what evidence would justify a lower price, a changed structure, a pause, or a decision not to proceed.

Hypothetical example: A buyer proposes to acquire a software company largely to sell its product through an existing enterprise sales force. The target's customer renewals and reported revenue check out. Interviews with the buyer's account leaders, however, indicate that their buyers are in a different department from the target's buyers. Product testing reveals that an integration required by those customers would consume the development capacity assigned to the first year of the plan. Neither finding means the target is a poor company. Together they challenge the buyer's specific reason for paying a strategic premium.

Separate Evidence From Assumption

A proposed framework can divide each material thesis into four parts: a value mechanism, an observable condition, an owner, and a response if the condition fails. The value mechanism explains where returns are expected to come from. The observable condition is a claim that diligence can test. The owner is the executive accountable for the work before and after closing. The response describes how the buyer would change its price, terms, integration plan, or decision.

Different claims require different tests. A revenue synergy might require customer interviews, a review of channel incentives, and an estimate of product changes. A cost saving might require process mapping and an assessment of contractual or service constraints. A market entry thesis might depend on approvals, distribution relationships, or local operating capability. A technology thesis might depend on the target's architecture, maintenance burden, and ability to connect with the buyer's systems. No single checklist can replace the reasoning that makes these questions material.

Historical performance remains important. Financial diligence tests the quality and durability of earnings. Legal diligence tests obligations and rights. Commercial work examines customers and competitors. The proposed change is to connect those workstreams to the acquisition decision. A finding about a contract should not be filed as a legal exception if the same contract is the only path to a planned product launch. Its strategic significance belongs in the investment case and the price discussion.

This approach also requires attention to the buyer. A seller can reasonably provide information about its own operations, but it cannot validate whether the buyer's sales channels, systems, leaders, or customers will deliver a projected benefit. The buyer must test its own ability to execute. Asking the seller to confirm a synergy that depends on the buyer's organization confuses access to evidence with responsibility for the claim.

Test the Downside Without Assuming the Worst

Good diligence does not require treating every uncertainty as a reason to stop. It requires distinguishing risks that can be priced, controlled, or monitored from those that invalidate the thesis. A buyer might accept uncertain customer adoption if it can stage investment, retain the product as an independent offering, and avoid paying in advance for unproven expansion. It should be more cautious if the deal works only when a single assumption succeeds and there is no credible alternative.

Scenario work should connect uncertainty to consequences. Consider a proposed acquisition whose return depends on both retaining a major customer and combining two technology platforms. Model the case in which only one occurs, as well as the case in which both fail. Ask what resources would be committed before the outcome becomes visible and what options would remain. The point is not to assign false precision to probabilities. It is to expose concentrations of risk that a single forecast can hide.

Deal terms can address some uncertainties, but they cannot repair an incoherent operating thesis. Contingent consideration may align payment with measurable outcomes where the terms are practical and the parties can define who controls those outcomes. Representations can allocate specified risks, subject to negotiation and the applicable agreements. Neither converts an untested integration assumption into a tested one. Nor should a buyer assume that every material risk can be shifted to a seller.

Tradeoffs are unavoidable. Greater investigation can improve confidence but consume time, cost money, and risk exposing sensitive information. Competitive processes may limit access. In those circumstances, record what remains unknown, identify any conservative assumptions used in price, and decide which unresolved points are conditions for proceeding. Speed is a legitimate consideration; pretending that speed removed uncertainty is not.

Carry the Thesis Through Closing

The investment committee or board should receive a short record of the value mechanisms, the evidence for each, the remaining uncertainties, and the people accountable for resolving them. A long diligence report is not a substitute for a decision document that shows how new information changed the original case. Where an important finding has no effect on valuation, terms, or execution, decision makers should be able to explain why.

The same record should become a post closing operating tool. Assign milestones tied to the assumptions that justified the purchase, not merely to generic integration activity. If the deal relies on selling a product through a new channel, monitor whether that channel produces qualified opportunities and whether customers can adopt the product. If it relies on cost savings, measure the savings net of transition expenses and any loss of service quality. If the thesis changes, revise the plan and state what has been learned.

A review after the transaction can compare the original decision rules with actual outcomes. This is not an exercise in finding fault with hindsight. Some carefully assessed risks will materialize, and some weakly examined risks will not. The aim is to distinguish errors in evidence, reasoning, and execution so the next acquisition decision improves. The buyer builds a stronger decision process by learning from both completed transactions and deals it chose not to pursue.

Negotiation still matters. Price, protections, financing, and closing conditions can determine whether a sound target becomes a sound investment. Diligence is not more important in every deal. Its contribution is to make negotiation and the final decision responsive to the actual sources of value and risk. A buyer should know not just what it is buying, but why ownership should make the asset worth more to that buyer, and what would prove that belief wrong.

Executive Imperatives

Executive Imperative: Write a testable investment thesis before the next acquisition process advances. Name each material source of value, the evidence required, the executive responsible, and the finding that would change the recommendation.

Executive Imperative: Ask diligence leads to report findings against the thesis, not only against their functional checklists. Require the final decision paper to distinguish established facts, assumptions, and unresolved issues that matter to price or execution.

Executive Imperative: Run at least one downside scenario that challenges the main value mechanism. Decide explicitly which risks can be managed through terms or staged investment and which would make the proposed transaction unattractive.

Executive Imperative: Keep the decision record after closing. Measure the assumptions that supported approval, assign owners to corrective action, and compare outcomes with the original case before repeating the acquisition playbook.