What is an acquisition thesis?
An acquisition thesis is a written specification of the company a buyer intends to acquire, stated precisely enough that someone else could use it to disqualify a candidate. It has three parts that are usually separable: the objective, which is what the acquisition is meant to achieve that the buyer cannot build or hire; the specification, which is the size, sector, business model, geography, customer profile and management situation that would serve that objective; and the disqualifiers, which are the characteristics that end the conversation regardless of price. The Business Acquisitions Institute treats the third part as the one that does the most work, and its department page on building the acquisition thesis puts the reason plainly: the disqualifiers are “easy to write while no company is in view and nearly impossible to write honestly once one is.”
A thesis is not a valuation, a model, or a prediction about a market: it states what the buyer will consider, not what anything is worth. A document that contains a target price stops being a filter and becomes an anchor, and the buyer spends the search looking for a company that justifies the number rather than one that fits the criteria. The Institute publishes no multiple, range or benchmark price for any category of private company.
Acquisition criteria are not stable under contact with an attractive company, and the document is the only durable record of what the buyer decided before anybody was persuasive. The upstream questions are covered at why acquire, and when not to and acquisition readiness.
Why do buyers without an acquisition thesis overpay?
Buyers without an acquisition thesis overpay because there is nothing in the process that produces a walk-away point. Every company that comes in front of them is evaluated on its own terms, against no stated standard, by people who have already invested weeks of attention in it. Criteria formed while looking at a specific business are not criteria; they are a description of that business.
The second mechanism is that undirected buyers are shown worse opportunities and therefore see a worse population. A buyer who describes themselves as opportunistic gives an intermediary nothing to screen against. The Institute’s page on brokers, advisors and investment banks makes the same observation from the intermediary’s side, noting that a buyer without a written thesis “usually gets volume rather than fit, and pays to evaluate companies that were never candidates.” Attention spent on companies that were never candidates raises the cost of the search, which raises the pressure to conclude it.
The third mechanism is that a buyer with no fixed disqualifiers has no language for declining a company for a reason other than price. When the only available objection is the number, every concern that should have ended the process instead becomes something to be priced: owner dependence, a single customer carrying the margin, an unresolved regulatory exposure. Whether such a concern was correctly identified is what quality of earnings and commercial diligence exist to establish.
What does an acquisition thesis have to specify to be useful?
A usable thesis specifies the dimensions on which a company can be ruled out, in terms that need no follow-up conversation. In the Institute’s framing those are size and financial profile, industry and business model, geography, customer profile and the concentration the buyer will tolerate stated as a number, what happens to the owner and whether a management layer exists beneath them, and the absolute disqualifiers. Vagueness on any one of them stops the document filtering, and a thesis that filters nothing is a mood rather than a specification.
Two of those dimensions are routinely written too loosely to be operative. The first is size: the band a buyer can finance and absorb is usually narrower than the band the buyer finds interesting, and stating the second produces a search full of companies the buyer cannot transact in. The second is owner transition, which changes both the integration plan and the population of realistic targets and is frequently left to be discovered during negotiation.
Valuation parameters belong in a thesis, but a target price does not. Parameters describe what pricing the buyer considers defensible for that profile of business and how much leverage they will carry; a price is a function of a specific company and of what diligence reveals. The useful discipline is stating in advance what would justify going above the buyer’s normal parameters, so that if it happens it is a recognized decision rather than a drift noticed afterward. What a specific business is worth requires normalized financials and a valuation professional working from them.
Does a lender test the acquisition thesis, or only the company?
A lender tests the price, and in doing so imposes discipline the buyer may not have brought. For a change of ownership financed by a U.S. Small Business Administration 7(a) loan, the SBA standard operating procedure sets out what must be established before the loan can be approved. The version that governs an application made today is SOP 50 10 8, effective 1 June 2025; SOP 50 10 8.1 is published but does not take effect until 1 October 2026, and SBA Information Notice 5000-880695 of 14 August 2026 states that lenders “must continue to use SOP 50 10 8.0 for 7(a) and 504 applications submitted through September 30, 2026.” Both versions provide that the business valuation “must be requested by and prepared for the Lender” and that the lender “may not use a business valuation prepared for the Applicant or the seller.” The valuation is not the buyer’s document and is not produced for the buyer’s comfort.
The consequence of exceeding it falls on the buyer directly. Under SOP 50 10 8 the ceiling is stated against the loan: any loan proceeds used to facilitate a change of ownership “may not exceed the business valuation.” From 1 October 2026, SOP 50 10 8.1, Appendix 15, states it against the buyer: “[t]he business valuation must support the Purchase Price as defined in Paragraph A.1 regardless of how the debt is structured. If the amount paid for the business exceeds the business valuation, the difference must be made up by equity.” The base contribution is fixed in both. SOP 50 10 8 requires an equity injection of at least 10 percent of total project costs on a complete change of ownership; SOP 50 10 8.1 keeps 10 percent and adds that “[f]or Initial Acquisitions, the required equity injection cannot be reduced or eliminated,” while allowing a lender to reduce or eliminate it for business expansions and owner buyouts where stated liquidity and net worth conditions are met. Under both versions, loans to an employee stock ownership plan acquiring a controlling interest of at least 51 percent in the employer business are not subject to the equity injection requirement at all.
From the same date, independent examination of the seller’s earnings becomes a condition rather than a courtesy at a defined size. SOP 50 10 8 imposes no such requirement; SOP 50 10 8.1, Appendix 15, Credit Standards, provides that “[f]or Business Expansion and Initial Acquisition transactions where the Purchase Price as defined in Paragraph A.1 is equal to or greater than $3 million, the Lender must also obtain a Quality of Earnings (QoE) in addition to the required Business Valuation,” with the threshold measured before buyer equity, seller debt or other financing sources are applied, and with the report required to be prepared for the lender rather than by or for the borrower or seller. None of this states what any buyer should do, and the rules of any particular loan program are a matter for the lender and the buyer’s own advisers. What it establishes is narrower: a buyer who abandoned their own price discipline will meet somebody else’s. See acquisition financing.
Does a roll-up thesis carry risks that a single acquisition does not?
A thesis contemplating repeated acquisitions in the same or related business lines is assessed cumulatively by the federal antitrust agencies, which is a different exercise from assessing each deal alone. Guideline 8 of the Merger Guidelines issued jointly by the U.S. Department of Justice and the Federal Trade Commission on 18 December 2023 is titled “When a Merger is Part of a Series of Multiple Acquisitions, the Agencies May Examine the Whole Series,” and provides that “[i]f an individual transaction is part of a firm’s pattern or strategy of multiple acquisitions, the Agencies consider the cumulative effect of the pattern or strategy when applying the frameworks in Guidelines 1-6.” The guidelines add that the agencies “may examine a pattern or strategy of growth through acquisition by examining both the firm’s history and current or future strategic incentives,” including documents reflecting the firm’s plans. A written acquisition thesis is a document of exactly that kind.
The 2023 Merger Guidelines survived the change of administration. On 18 February 2025, FTC Chairman Andrew N. Ferguson wrote to FTC staff that “the FTC’s and DOJ’s joint 2023 Merger Guidelines are in effect and are the framework for this agency’s merger-review analysis,” citing stability across administrations as the reason. The guidelines themselves state that they “create no independent rights or obligations, do not affect the rights or obligations of private parties, and do not limit the discretion of the Agencies.” They describe how the agencies investigate; they are not the law. Whether a particular series of acquisitions raises a problem under Section 7 of the Clayton Act is a legal question decided by the agencies and, if litigated, by a court, on advice from the buyer’s own antitrust counsel.
Size of transaction is a separate question from antitrust exposure and should not be read as a proxy for it. Premerger notification under the Hart-Scott-Rodino Antitrust Improvements Act turns on thresholds the FTC adjusts annually: for 2026 the size-of-transaction threshold is $133.9 million, published as “Revised Jurisdictional Thresholds for Section 7A of the Clayton Act” at 91 Fed. Reg. 2133 on 16 January 2026 and effective 17 February 2026. The FTC’s Premerger Notification Office, announcing the change in its Competition Matters post “New HSR thresholds and filing fees for 2026,” states that “[t]he correct threshold for determining reportability is the one in effect at the time of closing.” Most acquisitions of the companies this Institute writes about fall below that figure and require no filing, but falling below a notification threshold is not an exemption from the antitrust laws.
When should an acquisition thesis change?
A thesis should change when the buyer’s understanding changes, and the change should be written down as an amendment with a stated reason. Sometimes a company reveals that the original criteria were wrong: a sector adjacency the buyer had excluded turns out to share a sales motion, or a size band turns out to rest on a stale financing assumption. Recording that as a decision preserves the only thing the document was for, which is the ability to tell later whether the criteria were reasoned or merely relaxed.
The failure mode is the unwritten version, where the criteria migrate toward the company currently in front of the buyer and nobody notices that the thesis no longer describes what the buyer is doing. A buyer who has amended a thesis three times in writing can see the pattern. A buyer who has amended it three times silently cannot.
The thesis also has readers beyond the buyer. A leadership team that has seen it need not reconstruct the search from one person’s head, and an intermediary working from a precise thesis screens against something, which is the difference between being shown companies and being shown candidates. Who that intermediary is working for is a separate question, covered at brokers, advisors and investment banks. Nothing on this page recommends that any reader acquire, sell or finance anything, states what any company is worth, or offers legal, tax or securities advice. Each source cited here was read in the issuing body’s own published text on 15 September 2026.