ETA Models Explained: The Six Searcher Types

Not all acquisition entrepreneurs are the same. Understanding the model matters for buyers, investors, and the businesses they acquire.

Entrepreneurship through acquisition is not a single path. It is a family of related models, each with a different capital structure, risk profile, timeline, and investor dynamic. What they share is the core premise: rather than building a business from nothing, you acquire one that already exists and create value by running it well.

The six models covered in this article are the ones you will encounter most frequently in the UK and European ETA market, and the ones used to classify deal types on the Archimax platform. If you are a searcher bringing a deal to market, understanding which model you are operating under matters. If you are an investor evaluating an opportunity, it shapes how you assess the risk, the return, and the operator in front of you.

1. Traditional Search Fund

The traditional search fund is the original model, developed at Stanford Graduate School of Business in the 1980s and now the most academically studied form of ETA.

The structure works in two stages. In the first stage, the searcher raises a modest amount of capital, typically from 10 to 20 individual investors, to fund a dedicated search period of 18 to 24 months. This capital covers the searcher's salary, travel, adviser fees, and the cost of evaluating acquisition targets. In return, investors receive pro-rata rights to participate in the acquisition when a deal is found, along with a step-up on their initial investment as compensation for bearing early-stage risk.

In the second stage, once a target is identified, investors are offered the right of first refusal to fund the acquisition. The searcher typically receives a meaningful equity stake in the acquired business, earned over time through a vesting schedule tied to continued involvement as operator.

What distinguishes this model: the investor relationship is established before a deal exists. Investors back the searcher first, the deal second. This creates strong alignment and genuine mentorship, but it also means the searcher is accountable to a group of investors from day one.

Typical deal profile: established SMEs with £500,000 to £3 million in EBITDA, strong cash flow, and a clear succession need.

Best suited to: first-time buyers with strong commercial backgrounds, typically MBA graduates or professionals with five to ten years of operating experience, who benefit from the structure, salary, and investor network that the model provides.

2. Self-Funded Searcher

The self-funded model follows the same acquisition logic as the traditional search fund but without institutional search capital. The searcher funds their own search period, relying on personal savings, consulting income, or part-time work to cover costs while they look for a target.

This means more personal financial exposure during the search but significantly more equity at the end of it. There are no search capital investors with preferential rights, no step-up obligations, and no investor reporting during the search phase. The searcher moves faster, retains more control, and keeps more of the upside.

When a deal is found, the self-funded searcher typically approaches investors directly to raise the equity needed to close. Because there is no pre-existing investor group with first refusal rights, the searcher has more flexibility in structuring the deal and selecting capital partners. One European nuance is worth noting: US self-funded deals lean heavily on government-backed SBA (Small Business Administration) loans for the debt layer, and there is no direct UK or European equivalent. Self-funded acquisitions here are typically financed through commercial bank debt, a seller note, and the searcher's own capital alongside outside equity.

What distinguishes this model: personal financial risk during the search is higher, but the equity position at acquisition is structurally cleaner. Self-funded searchers tend to be more capital-efficient and move with less process.

Typical deal profile: often smaller than traditional search fund targets, with EBITDA of £200,000 to £1.5 million, where deal complexity is lower and the path to close is more straightforward.

Best suited to: experienced operators or professionals with sufficient personal financial runway who want more autonomy, less process, and a larger equity share at the end.

3. Accelerator-Sponsored Searcher

The accelerator model is the newest of the six and is growing quickly in both the US and Europe. It operates like a studio or incubator for acquisition entrepreneurs: a sponsoring organisation provides a group of searchers with infrastructure, mentorship, a shared services platform, access to deal flow networks, and in some cases capital, in exchange for an equity stake in whatever business each searcher eventually acquires.

The searcher benefits from day one. They are not alone during the search, they have access to experienced operators and advisers within the accelerator network, and the organisational infrastructure around them reduces friction. The trade-off is that they give up a portion of equity to the accelerator sponsor upfront, before any deal is found.

Accelerators vary considerably in what they offer and what they take. Some provide a salary equivalent during the search period. Others offer co-investment rights or guarantee deal financing through their network. The equity stake taken by the sponsor typically ranges from 10% to 25% of the acquired business, depending on the level of support provided.

What distinguishes this model: the searcher operates within a structured support system rather than independently. The model reduces isolation and inexperience risk, but introduces a third-party equity holder whose interests must be managed carefully post-acquisition.

Typical deal profile: broadly similar to traditional search fund targets, though accelerators often have sector preferences or geographic focus areas that shape the deal mandate.

Best suited to: first-time buyers who value structured support, mentorship, and a peer cohort over maximum equity retention. Also attractive to buyers who want access to a proprietary deal flow network or investor base without building one from scratch.

4. Independent Sponsor

The independent sponsor model inverts the search fund sequence. Rather than raising capital first and then finding a deal, the independent sponsor identifies a specific acquisition target and then goes to investors to raise the capital needed to close it. There is no pre-committed pool of capital, no search salary, and no investor relationship before the deal exists.

The economics are deal-by-deal. Independent sponsors typically earn a transaction fee at close (usually 2 to 5% of deal value) and carried interest on profits at exit (typically 20%), sometimes alongside a co-investment stake of their own. They may or may not operate the business post-acquisition; some hand off to a management team and take a board seat, others step in as full-time operator.

This model demands credibility. Approaching investors with a specific deal and no track record is a hard sell. Most successful independent sponsors have prior private equity, investment banking, or operating experience that allows them to be taken seriously during the capital raise. The upside is complete freedom: no institutional constraints, no pre-agreed deal parameters, and the ability to pursue any opportunity that meets their criteria.

What distinguishes this model: the deal comes first, the capital second. Speed and credibility are essential. The investor relationship is transactional and deal-specific rather than long-term and mentorship-oriented.

Typical deal profile: broader than traditional search funds, often mid-market (£2 million to £10 million EBITDA), and frequently involving more complex capital structures.

Best suited to: experienced professionals with an existing investor network, strong deal origination capabilities, and the financial resilience to work without a salary until a transaction closes.

5. HoldCo Buy & Build

The buy-and-build model starts with the acquisition of a single platform business and uses it as the foundation for a series of further acquisitions in the same sector. The goal is to create a larger, more valuable entity than any of the individual businesses would be on their own, capturing value through operational integration, cost synergies, and the multiple expansion that comes from increased scale.

In a buy-and-build, the platform acquisition is typically the most important decision. The platform needs to be operationally solid enough to absorb add-on acquisitions without destabilising, and it needs a management team capable of integrating new businesses rather than just running the original one. Add-ons are usually smaller than the platform and bought at lower multiples, creating immediate value on acquisition.

The holding company structure (HoldCo) is the legal and operational vehicle through which the multiple businesses are owned and governed. It provides a clean separation between the platform, the add-ons, and the capital providers, and it simplifies the eventual exit, whether to a strategic buyer or a private equity firm looking for a sector platform.

What distinguishes this model: this is a programmatic acquisition strategy, not a single transaction. It requires capital for multiple deals, operational infrastructure capable of integration, and a longer time horizon than a single-business acquisition.

Typical deal profile: platform businesses with £1 million to £5 million EBITDA in a fragmented sector with multiple smaller acquisition targets available at lower entry multiples.

Best suited to: experienced operators with sector expertise and the ability to raise capital for multiple transactions, or those backed by investors who explicitly support a consolidation thesis.

6. HoldCo Roll-Up

The roll-up is the most aggressive of the six models and the closest to traditional private equity in its logic. Rather than acquiring a platform and building around it, the roll-up strategy involves acquiring multiple businesses in a fragmented sector simultaneously or in rapid succession, with the explicit goal of creating a larger entity that commands a premium exit multiple.

The primary value driver is multiple arbitrage: buying businesses individually at four to five times EBITDA, combining them into a group, and selling the group at eight to twelve times EBITDA. This arithmetic can be compelling, but it demands exceptional execution. Integration is harder and faster than in a buy-and-build. Cultural clashes between founder-led businesses are common. And if the exit multiple does not materialise, or the integration underdelivers, the returns collapse quickly.

Roll-ups require more capital than any other model on this list. They also require a clear thesis about why the combined entity is more valuable than the sum of its parts, a thesis that investors will interrogate carefully.

The HoldCo structure is equally important here: it provides the governance layer across multiple operating businesses, clarity on where debt sits within the group, and the clean exit path that institutional buyers require.

What distinguishes this model: speed and ambition. This is not a patient capital story. It is a deliberate consolidation play with a tight timeline and a specific exit thesis. The risk is higher and so is the potential reward.

Typical deal profile: multiple businesses in the same sector, each with £300,000 to £2 million EBITDA, bought in sequence or in parallel to create a group with combined EBITDA of £5 million or more.

Best suited to: operators or investors with deep sector expertise, strong existing relationships in a fragmented industry, access to meaningful capital, and prior experience managing complex organisational integration.

A Side-by-Side Comparison

| Model | Capital Raised | Deal First? | Operator Role | Timeline | Equity Complexity | |---|---|---|---|---|---| | Traditional Search Fund | Before deal | No | Full-time operator | 5–8 years | Moderate | | Self-Funded Searcher | At deal close | No | Full-time operator | 4–7 years | Low | | Accelerator-Sponsored | Before deal | No | Full-time operator | 5–8 years | Moderate (sponsor stake) | | Independent Sponsor | At deal close | Yes | Varies | 3–6 years | Low to moderate | | HoldCo Buy & Build | Multiple rounds | Partly | Full-time, multi-site | 6–10 years | High | | HoldCo Roll-Up | Multiple rounds | Partly | Strategic/board level | 4–8 years | High |

Which Model Is Right for You?

There is no universally correct answer. The right model depends on your financial runway, your sector expertise, your risk tolerance, your investor network, and the type of business you want to run.

If you are a first-time buyer with a strong background but limited personal capital, a traditional search fund or an accelerator gives you structure, support, and a salary during the search. If you have the financial resilience to go it alone and want to maximise your equity, a self-funded search may be the better fit. If you have a specific deal in hand and an existing investor network, an independent sponsor approach is the most direct route. And if your ambition is to build something larger, a buy-and-build or roll-up strategy opens a different set of possibilities, at the cost of significantly more complexity.

What all six models share is the core ETA premise: you are buying a business that already works, and your job is to run it better than it has been run before. The model shapes how you get there. The quality of the business and the quality of your execution determine what happens once you do.

How Archimax Supports All Six Models

The Archimax platform is built to serve all six searcher types. Whether you are a traditional searcher in the middle of a funded search, a self-funded buyer who has identified a target, an accelerator-backed operator, or an independent sponsor building a roll-up thesis, the platform provides deal discovery and presentation tools for the ETA community.

When you register a deal on Archimax, you select the model that best describes your approach. That classification determines how the deal is categorised and presented to the relevant audience on the platform.

Note

The deal sizes, fee ranges, multiples, timelines, and equity structures described in this article are illustrative of typical market practice. Actual terms vary by deal, sector, and structure.

Alexander Kalis is the Founder and CEO of Archimax Global Solutions (archimax.solutions). Archimax is an information and deal-discovery platform for the entrepreneurship-through-acquisition and search fund community, at archimax.io.