Turning an acquisition brief into hard filters and evidence requirements

By Joash Boyton, founder, owner and CEO of Acquiry

Sponsored educational article by Acquiry.

A useful acquisition brief tells an origination team which businesses to investigate, which to exclude and what evidence is needed before a conclusion can be trusted. It separates genuine constraints from preferences and keeps unknowns visible. A long wish list does none of those jobs reliably if every item appears equally important.

The most consequential part of the brief is often the reason to say no. An attractive target may have a strong product, familiar customers and an interested owner while still failing a condition the buyer cannot accommodate. If the team allows those attractive features to compensate for a genuine constraint without an explicit decision, the brief has stopped governing the search.

This guide focuses on the inputs to an acquisition search: criteria, evidence and decision authority. Its central tool is a blank brief scorecard that can be used with internal researchers or an origination partner. The purpose is not to create an elaborate scoring system. It is to make the buyer's instructions clear enough that different people can apply them consistently and recognise when a decision is required.

Decide what the brief must enable

An acquisition brief should enable three practical decisions. First, should a company enter the research universe? Second, is there enough apparent relevance to justify an appropriate owner approach? Third, which unresolved questions must be answered before the buyer relies on the target's fit? These decisions require different levels of evidence, so the brief should not pretend that public research can settle everything.

Start with the acquisition objective. Describe the customer, product, capability, operating or ownership result the buyer seeks. Explain why an acquisition is being considered and what the target must contribute. Without that context, a researcher can match sector labels and financial ranges while missing the strategic purpose.

Identify the people who will use the brief. A corporate development analyst, external researcher, operating executive and owner-contact adviser may interpret the same phrase differently. The document should provide enough explanation for each to understand the criterion, the source expected and the point at which they should ask for clarification.

Keep the brief separate from a later diligence checklist. It should identify the issues that determine search relevance, not list every document that might eventually be reviewed. An overly broad diligence list can make early work burdensome without improving the target universe. The brief should direct attention to the questions most likely to change the search decision.

End the opening section with a concise statement of the desired target and the buyer's main limitations. If that statement cannot be written without contradictory phrases, the buyer may need to resolve its own choices before commissioning outreach. More detail does not cure an objective that is internally inconsistent.

Separate hard filters, preferences and unknowns

A hard filter is a condition that must be satisfied for the target to fit the current brief. It should reflect a real constraint or essential strategic requirement. A preference improves fit but can be traded against other considerations. An unknown is a question whose answer is not yet supported. These categories should be explicit rather than inferred from the order of a bullet list.

For every proposed hard filter, ask: what makes this non-negotiable? The answer might involve the buyer's operating capacity, approved scope or a capability essential to the thesis. If the reason is merely that the characteristic would be convenient, it may belong among preferences. A narrow brief can be useful, but only when its exclusions serve the objective.

For every preference, ask what could compensate for its absence. The buyer might prefer a particular location but accept another if the service can be delivered effectively. It might prefer a familiar technology environment but consider alternatives with a credible integration plan. The trade-off should be described, not left to the originator's intuition.

Unknowns need their own treatment. Missing evidence does not prove that a target passes or fails. The brief should state whether the company can remain in research, whether outreach may clarify the issue and when the uncertainty becomes too important to leave unresolved. This prevents optimistic assumptions from being hidden inside a completed scorecard.

Use plain labels in the working document. “Required”, “preferred” and “not yet known” are usually more informative than unexplained colours. Where a criterion is conditional, state the condition. For example, independent management may be required only where the buyer cannot supply leadership during the intended transition.

Make every hard filter traceable to a reason

A hard filter should have a written rationale connecting it to the acquisition objective. This allows the buyer to distinguish a current constraint from a habit inherited from earlier searches. It also helps an adviser recognise relevant alternatives without treating the brief as an invitation to ignore instructions.

Ask whether the criterion describes the desired outcome or only one way of achieving it. A requirement for a particular office location might actually reflect a need for reliable customer coverage. A requirement for a specific software system might reflect a need for data interoperability. The underlying requirement may be firm while the proposed implementation is flexible.

Where the implementation itself is essential, explain why. The buyer may have an approved operating model or a genuine limit on integration work. The point is not to challenge every constraint until it disappears. It is to ensure the team understands the constraint well enough to apply it correctly.

Record what would need to change for the filter to be reconsidered. If the buyer's lack of management capacity creates the requirement, a newly approved leadership resource might alter it. If the filter reflects an essential customer proposition, the threshold for changing it may be much higher. A review condition is not an automatic exception.

This traceability protects against two errors. The first is excluding useful targets because a preferred implementation was mistaken for a strategic necessity. The second is advancing unsuitable targets because the team treats a real operating limit as a negotiable preference once an attractive company appears.

Define evidence before applying the criterion

A criterion is incomplete until the brief says what would support a conclusion. “Established management” could mean a public list of executives, an owner explanation of responsibilities or a verified plan for leadership continuity. Those forms of evidence answer different questions. The brief should identify what is enough for research inclusion and what must be examined later.

For each material criterion, specify the expected source, relevant period and reviewer. Public company materials may establish a stated product offering. Official records may help identify an entity or ownership position. Contracts, financial schedules and operating evidence may be needed for more consequential conclusions. The source should match the claim.

Keep statements and verification distinct. An owner may accurately describe a business in an introductory conversation, but the buyer still needs to know which points have supporting evidence and which remain to be checked. A research note should not convert a confident explanation into a verified fact simply because it sounds plausible.

Define how conflicting evidence is handled. A website may describe a product that no longer contributes materially to the business. A historic document may differ from the owner's current account. Record the conflict, date the sources and assign the question to someone who can resolve it. Do not choose the version that makes the target appear to fit.

Use a short evidence statement for each criterion: “For initial research, use [source or signal]. Before relying on fit, obtain [evidence] and review it with [responsible person].” This keeps early work proportionate while preventing preliminary observations from being treated as final conclusions.

Assign decision owners and exception authority

The brief should identify who can interpret ambiguous criteria and who can approve changes. These may be different people. A researcher can flag uncertainty; an operating executive can assess an integration constraint; the buyer's authorised decision-maker can approve a revised search scope. The allocation should be explicit.

Avoid giving every participant an informal veto. If several teams can introduce new hard filters at any moment, the search can become impossible to execute consistently. Invite their input when the brief is prepared, identify the requirements that matter and establish a clear process for raising newly discovered concerns.

Likewise, do not allow a single enthusiastic sponsor to waive a constraint that another team must live with. If the target's fit depends on additional operational capacity, the responsible team should assess that capacity before the brief changes. An exception should be a considered buyer decision, not a verbal reassurance during a meeting.

Record the exception authority for each hard filter. Some criteria may require approval from a specific internal committee or role; others may be adjustable by the search lead. The article does not prescribe a governance structure. It recommends that the buyer use its actual authority arrangements rather than leaving them implicit.

When an exception is approved, document the reason, conditions and impact on other targets. A one-off decision may reveal that the original filter was too narrow. Alternatively, it may remain a genuinely exceptional case. The team should know which interpretation applies so future research is not guided by an accidental precedent.

Translate the core target fields into usable instructions

Niche, geography, business model, financial characteristics, capabilities and ownership are useful headings, but each needs a definition. The following approach turns those headings into instructions a researcher or origination adviser can apply.

• Niche: Describe the customer problem and the target's role in solving it. Include adjacent business types that may be relevant and superficially similar types that are outside scope.
• Geography: State whether the requirement concerns customers, operations, establishment, staff or another specific feature. A broad country label can conceal several different needs.
• Business model: Explain how the target delivers value and earns income. Distinguish the desired commercial relationship from a sector label or a preferred technology.
• Financial characteristics: Define the measure, period, currency and reason it matters. Identify which figures are preliminary and which require review by appropriate financial specialists.
• Capabilities: Describe the operating result the buyer needs, the components that support it and the evidence required to assess usability.
• Ownership: State the ownership or transaction situations within scope without assuming the owner's interest, authority or preferred outcome.
• Strategic rationale: Explain how the target would contribute to the buyer's objective and which assumptions connect the two.

For each field, add examples of what would and would not fit. Use hypothetical descriptions rather than confidential companies. Examples help expose ambiguity that abstract definitions can hide. They also give new researchers a practical way to understand the buyer's intent.

Do not make every field equally restrictive. The buyer may have one genuine capability requirement and considerable flexibility elsewhere. Another search may have several operating constraints. The brief should reflect the actual objective rather than imitate the shape of a standard template.

Use financial screens without creating false precision

Financial characteristics can help define a relevant target universe, but the brief should be clear about what the numbers represent. Specify the period and currency, whether the information is reported or estimated and whether adjustments have been made. A range without those definitions can produce inconsistent screening.

Ask why the financial criterion matters to the buyer. It may relate to operating scale, the ability to support a management team or the scope of the approved search. That reason helps determine whether the measure is a hard filter, a preference or an initial research signal. Do not assume a convenient threshold is strategically essential.

Keep screening measures separate from valuation conclusions. A company falling within a revenue range does not establish an acceptable price, funding capacity or transaction feasibility. The search brief identifies relevance; accounting, financial and transaction analysis assess other questions at the appropriate stage.

If a measure is defined differently across companies, require the differences to be recorded. The team can retain a target for clarification without treating incomparable figures as directly comparable. Missing private information may be a normal limitation of early research rather than a reason to invent an estimate.

Where the financial condition is genuinely decisive, identify the evidence and specialist review required before relying on it. If the information cannot yet be obtained, record the consequence for the search. The answer may be conditional inclusion, a proportionate owner question or a pause, depending on the buyer's purpose.

Check whether the criteria can work together

Individual criteria can appear reasonable while their combination creates an unrealistic target. Review the brief as an operating model, not just a list. Ask what a business satisfying all the hard filters would need to look like and whether the buyer has evidence that such a model exists.

Look for dependencies between requirements. A buyer might require the target to operate independently while also expecting to remove most of its support functions immediately. Another might seek a highly specialised service but insist that no important knowledge resides with a small group of people. These combinations are not automatically impossible, but they require an explanation of how the operating model would work.

Use a constraint-interaction exercise. Choose each hard filter in turn and ask whether meeting it makes another requirement harder to satisfy. Record the relationship and the buyer capability that could address it. If no credible response exists, the team may need to revise the brief or acknowledge that the search is deliberately narrow.

Check the timing assumptions as well. A target may satisfy the buyer's needs after an agreed transition without meeting every desired condition on the first day. If immediate readiness is essential, state that clearly. If a transition is acceptable, define the outcome required and the evidence needed to assess whether the plan is credible.

Finally, ask whether the buyer is assigning its own responsibilities to the target by default. Some gaps may be more sensibly addressed through internal preparation, specialist support or a separate commercial arrangement. The brief should identify what the acquisition must provide, not demand that one company solve every weakness in the buyer's organisation.

This review does not mean relaxing genuine requirements to make the list longer. It ensures that exclusions follow from a coherent strategy. A narrow but internally consistent brief is workable; a contradictory brief can generate endless revisions without producing a target the buyer could actually use.

Handle preferences through explicit trade-offs

Preferences are valuable because they help the buyer choose among targets that meet essential requirements. They become problematic when they are treated as hidden hard filters or combined in a scoring system that conceals the reasoning. The brief should explain which trade-offs are acceptable and which require a decision.

Group related preferences. A buyer may prefer familiar systems, a nearby office and a similar operating model because all three reduce integration effort. Treating them as independent advantages can overstate the importance of one underlying concern. Identify the reason behind the preference before assigning weight.

Use qualitative comparisons where the evidence does not support precision. A target may offer stronger capability but require more integration work. Another may be easier to operate but contribute less to the strategic objective. A written comparison can expose the choice more clearly than a decimal score that implies an objective answer.

If the buyer uses weighted scoring, keep hard filters outside the compensating calculation. A target should not pass a genuine non-negotiable condition simply because it receives high scores elsewhere. The score can help compare eligible candidates, but it should not silently authorise a change to the brief.

Ask what information could reverse the preference ranking. This identifies useful next research rather than encouraging debate over weakly supported scores. A target that appears less attractive may deserve attention if one unresolved issue could materially improve its fit and can be investigated proportionately.

Give unknowns a deliberate place in the brief

Early acquisition research contains uncertainty. The brief should provide a way to work with it rather than forcing every field into a yes-or-no answer. Use an unknown category that states the question, why it matters and how the answer could be obtained.

Distinguish unknown because not researched, unknown because evidence is unavailable and unknown because evidence conflicts. These situations call for different actions. A researcher can address the first through further work; the second may require an owner discussion; the third may need a more careful review of dates, definitions or sources.

For a hard filter, state how long the question can remain unresolved in the decision sequence. The appropriate boundary depends on the criterion. A target may remain in the research universe while the team checks ownership, but the buyer should not rely on a critical operating capability before obtaining the relevant evidence.

For a preference, uncertainty may be acceptable for longer if it does not affect the next action. Do not spend disproportionate effort resolving a minor detail while a central strategic question remains unanswered. The brief should help prioritise learning, not encourage completion of every field for its own sake.

Finally, prevent unknowns from disappearing during summarisation. If a presentation describes a target as fitting the brief, it should not omit a material condition that remains unverified. Clear qualification is more useful than a polished but misleading impression of certainty.

Test the brief using contrasting hypothetical companies

Before commissioning a large search, apply the draft brief to several invented company descriptions. Include an obvious fit, an obvious exclusion and at least one ambiguous case. Ask different members of the team to explain their decisions. The exercise tests the instructions, not the researchers' ability to guess what a senior person prefers.

Use ambiguity intentionally. One description might have the required capability but a less preferred customer segment. Another might serve the right customers but depend on a founder who plans to leave. A third might appear outside the sector label while solving the precise customer problem. These cases reveal whether the brief distinguishes underlying needs from convenient proxies.

Compare the reasoning before discussing scores. If two reviewers reach different conclusions, identify which phrase or evidence assumption caused the difference. The solution may be a clearer definition, an additional example or a buyer decision about an unresolved trade-off.

Keep the calibration cases with the working brief. They help an external partner or new team member understand how to apply the criteria. Update them when the brief changes, so an old example does not contradict the current instruction.

This exercise can also reveal an overconstrained search. If every plausible description fails a different preferred feature, the team should ask whether those features are truly mandatory. The answer may be to preserve a narrow brief, but that should be a conscious choice supported by the acquisition objective.

Review the brief when evidence changes

A search brief should be stable enough to guide work and flexible enough to learn from evidence. The buyer may discover that the desired capability is usually delivered through a different model, that an assumed target category is too broad or that its own operating capacity has changed. Those findings can justify revision.

Use a change record with the original criterion, new evidence, proposed revision, approving person and effective date. Identify which researched companies are affected. This avoids the situation where one part of the team continues applying an old instruction while another uses the revised version.

Distinguish a change to the strategy from an exception for one target. A strategic change may require reconsidering the target universe and buyer rationale. A narrow exception may require specific conditions without changing the broader search. Both should be documented so the team knows what precedent has been created.

Ask whether the change is driven by evidence or by attachment to a particular company. An attractive owner conversation can create pressure to reinterpret the brief. That may sometimes lead to a sound new idea, but the new rationale deserves its own assessment rather than being presented as if it always matched the original objective.

Communicate changes before further affected outreach. An adviser should not describe an outdated buyer rationale to an owner or continue researching companies the buyer no longer wants. The brief is an operating instruction, so version control has a direct effect on the quality of external conversations.

Work through an attractive target that should be excluded

This example is hypothetical and does not describe a live acquisition opportunity. A professional training group wants to acquire a technical-skills training business that can operate with its existing management during the buyer's initial integration period. The buyer can provide commercial support and finance resources, but it has no approved capacity to run the target's daily training operations.

The brief therefore treats operating leadership continuity as a hard filter. It prefers a nearby location and a complementary course catalogue, but those are preferences rather than absolute conditions. The evidence requirement is a clear account of management responsibilities and a credible continuity plan, followed by appropriate verification before reliance.

Candidate A has an appealing brand, relevant customers and a course catalogue that closely matches the buyer's ambition. Its owner is interested in discussing a sale. However, the owner also manages instructor scheduling, resolves delivery problems and maintains key commercial relationships, and wants to leave day-to-day work immediately. No other person currently performs those responsibilities.

Candidate A should not pass the current hard filter merely because its other characteristics are attractive. The buyer needs a credible operating-leadership solution that it does not presently have. An enthusiastic owner response or a high preference score cannot supply that solution.

The team has several legitimate choices. It can exclude the target from the current search. It can pause while a specific continuity option is investigated. Or the authorised buyer decision-makers can consider changing the operating plan, including the resources required, and then revise the brief if the new plan is approved. What it should not do is quietly relabel the hard filter as a preference.

Candidate B is farther away and has a less familiar brand, but it has an established operations lead and an owner willing to discuss a transition. Those statements still need evidence. If they are supported, Candidate B may fit the essential operating requirement even though it scores less strongly on location and brand familiarity.

The example illustrates the purpose of the scorecard. It does not declare Candidate B a good acquisition or assign either company a value. It shows that an eligible but less convenient target can deserve more attention than a highly attractive target that fails a genuine constraint. The buyer's operating reality should govern the decision.

Use the blank acquisition-brief scorecard

Copy the following fields into a working document and complete one row for each material criterion. Keep the wording specific enough that someone who did not attend the strategy meeting can apply it.

1. Criterion: [The characteristic or condition being assessed, written in observable terms.]
2. Type: [Hard filter, preference or unresolved question.]
3. Reason: [How the criterion supports the acquisition objective or reflects a genuine buyer constraint.]
4. Definition: [Scope, threshold, period, geography or other detail needed to prevent inconsistent interpretation.]
5. Initial evidence: [The public source or research signal sufficient to justify further investigation.]
6. Confirmation evidence: [The documents, discussion or specialist assessment needed before the buyer relies on fit.]
7. Unknown treatment: [Whether the target may remain in research and what must happen before the next decision.]
8. Decision owner: [The person or role responsible for interpreting the criterion and assessing the evidence.]
9. Exception authority: [Who can approve a change or exception, and what must be recorded.]
10. Review trigger: [The evidence or change in buyer circumstances that would justify revisiting the criterion.]

Add a brief-level cover section containing the acquisition objective, intended operating model, authorised search scope and current version. Include unresolved strategic choices rather than burying them in footnotes. The cover section helps the reader understand why the individual criteria exist.

Before commissioning work, ask the origination team to explain the brief back in its own words. Which target would it exclude? Which uncertainty would it investigate first? Which statement would it use to explain the buyer's rationale to an owner? Misunderstandings revealed at this point are easier to resolve than after a large list or several owner conversations.

How Acquiry's briefing process relates to the scorecard

Acquiry's published acquisition process starts with an agreed target profile covering niche, geography, business model, financial characteristics, capabilities, ownership and strategic rationale. It then researches companies, approaches owners and qualifies fit, expectations and constraints. The scorecard in this guide is a practical way for a buyer to prepare those inputs and make its priorities explicit.

The worksheet is an educational decision tool, not a statement that every engagement includes this exact format. The actual scope, responsibilities and terms should be agreed for the assignment. A buyer should explain which decisions it retains and which questions it wants an origination adviser to investigate.

Acquiry's role is advisory rather than that of a principal buyer. A well-defined brief helps the firm research and open relevant owner conversations on a client's behalf. It does not replace the client's strategic judgement or the specialist work needed to verify legal, technical, accounting or other material matters.

If the buyer cannot distinguish essential conditions from preferences, an internal strategy and operating-capacity discussion may be more useful than immediate outreach. If the brief is clear and the bottleneck is finding and approaching relevant companies, external origination support can address that defined task. The resource should follow the need revealed by the brief.

Questions buyers should settle before signing off the brief

How many hard filters should a brief contain?

There is no useful universal number. Include the genuine conditions required by the strategy and buyer's constraints, and explain each one. Too many preferences labelled mandatory can make the search unnecessarily narrow; too few real constraints can allow unsuitable targets to consume time.

Should an unknown be treated as a failure?

Not automatically. State how the uncertainty will be handled and when it must be resolved. Missing evidence, contradictory evidence and evidence of failure are different situations. The consequence should follow the importance of the criterion and the next decision being made.

Can strong preferences compensate for a failed hard filter?

Not within an unchanged brief. The buyer can reconsider the constraint through its authorised process, but the change should be explicit and supported. A scoring model should not quietly grant an exception that the people responsible for the underlying risk have not approved.

What if the market does not contain the target we described?

Review the evidence and the reasons behind the criteria. The buyer may revise an unnecessary implementation preference, change the acquisition thesis or pursue another route. It may also keep a narrow search because the constraint is real. The decision should be conscious rather than disguised as broader research.

What is the most important test of a finished brief?

Ask whether two informed people can apply it to the same hypothetical company and explain their conclusion using the same criteria and evidence rules. Agreement is not guaranteed, but the source of any disagreement should be visible. A useful brief makes decisions and unresolved questions clearer, rather than merely making the document longer.

About the author: Joash Boyton is the founder, owner and CEO of Acquiry, an international M&A advisory firm based in Melbourne with a core focus on buy-side acquisition origination. More information: acquiry.com.

Sources and further reading

• Acquiry Buy-Side M&A Advisory: https://www.acquiry.com/acquisitions/
• About Acquiry: Global M&A Advisory Firm: https://www.acquiry.com/about/