Best M&A Advisors for Selling
a $20 Million Company in 2026

Why Deal Size Changes the Advisor Search

At roughly $20 million in enterprise value, most transactions fall into what is commonly called the lower middle market, generally defined as businesses with $5 million to $100 million in revenue or a similar range in transaction value. This size band has its own dynamics:

• Large investment banks (bulge-bracket and most middle-market banks) typically focus on transactions well above $100 million and may not prioritize a $20 million deal.
• Business brokers often work smaller "main street" transactions and may not run the kind of structured, multi-buyer process that maximizes value at $20 million.
• Lower middle market M&A advisors and boutique investment banks are built specifically for this range: sized to give a $20 million deal real attention without the overhead of a large bank. Our companion guide to top lower middle market investment banks covers this category in more depth.

Understanding where your deal falls helps narrow the search before you evaluate individual firms.

What Advisors Actually Charge at $20 Million

Fee talk usually stays vague until an engagement letter lands in front of you, which is backwards: the fee structure is one of the few things you can benchmark before you ever take a meeting. The most useful public benchmark is the M&A Fee Guide that Firmex has run annually since 2016 in partnership with Axial and Divestopedia. Its 2023–24 US edition, built from 189 US respondents (six in ten investment bankers, about 30% business brokers), models a success fee of 3.9% on a $20 million deal, against 6.3% at $5 million and 2.0% at $100 million. The more recent 2024–25 global edition, drawing on 456 respondents across 40 countries, models the same $20 million deal at 3.4%, with 4.8% at $5 million and 2.0% at $100 million. Call it roughly 3.4% to 3.9% at this size. The consistent pattern across every edition is that the percentage falls as deal size rises, so a quote well outside that band deserves an explanation.

The structure underneath the percentage varies more than the percentage itself. The single most common approach is a Lehman-style formula in which the rate declines as the price climbs, used by 51% of US respondents in the 2023–24 edition and 41% globally a year later. The classic version charges 5% on the first million, 4% on the second, and so on down to 1% above $5 million; the widely used "Double Lehman" variant starts at 10% and falls to 2%. About a third of advisors skip tiering entirely and charge a flat percentage, and 16% use an accelerator that pays them more above an agreed target price, which can be a genuinely useful way to align an advisor with a stretch outcome.

Then there is the part owners tend to overlook. In the US edition, three-quarters of advisors charge some form of engagement, work, or retainer fee payable whether or not your deal ever closes, most commonly a monthly fee between $5,000 and $10,000; roughly a quarter charge nothing upfront (the newer global edition puts the no-work-fee share at 19% among North American firms). The detail that matters most is whether that money comes back to you: only 54% of advisors credit collected work fees against the success fee at closing, meaning nearly half keep the retainer on top of it. Firmex also notes that firms have deliberately shifted toward recurring engagement fees to protect themselves against deals that drag on or never close, which is a rational business decision on their side and a real transfer of risk onto yours. Ask two specific questions of every finalist: what is the monthly fee, and is it credited against the success fee. Get both answers in writing.

None of this makes retainers illegitimate. A firm doing serious preparation work deserves to be paid for it, and a nominal retainer can be a reasonable test of whether a seller is genuinely committed. The point is that "success fee" and "no retainer" are not interchangeable claims, and the difference between a credited and a non-credited work fee on a $20 million deal can run into six figures.

What "Best" Actually Means at This Size

Instead of chasing a generic ranking, evaluate advisors against the criteria that actually affect your outcome:

• Relevant deal experience. Has the firm closed transactions in a similar revenue range and industry, or adjacent ones?
• Who does the work. Will a managing director or partner run your deal day to day, or will it be delegated to junior associates once you sign the engagement letter?
• Process discipline. Ask how many buyers the firm actually contacted on its last closed deal in your size range, not just how many expressed interest.
• Buyer network fit. Does the firm have real relationships with the strategic acquirers, private equity firms, and search funds that actually buy businesses like yours?
• Fee structure. Does the advisor make most of their money from a success fee paid at closing, or would you still owe substantial retainers even if the deal never closes?
• Communication style. Do you get direct answers on a call, or a sales pitch that avoids specifics?

The reason these criteria beat a generic ranking is that a $20 million sale is not a commodity transaction. Two firms can both be excellent and still be wrong for each other, one built for cross-border strategic buyers, the other for regional financial buyers, and the mismatch only shows up months into a process when it is expensive to switch. Judging advisors against the factors above forces the conversation onto the things that will actually move your outcome: who runs the deal, how they run it, and whether their buyer relationships overlap with the acquirers most likely to pay a premium for a business like yours.

What the League Tables Do and Do Not Tell You

Several firms in this article cite a ranking, and those rankings are not all the same thing, so it is worth being precise about which ones carry weight. The most credible source in this segment is Axial, a lower middle market deal network that publishes a quarterly Top 25. Axial states that its rankings are "based entirely on first-party Axial data drawn from every stage of eligible deals marketed on the platform" and that "no self-reported data or paid placements factor into the results," scoring firms on client quality, buyer targeting, and process effectiveness rather than raw deal count. That is a materially better methodology than a directory that sells placement, and when a firm below cites an Axial rank, we treat it as a real signal.

It has one structural limit worth understanding, and Axial is open about it. Only "active investment banking and M&A advisory members of the Axial platform" in good standing that "marketed at least one deal that received investor interest during the ranking period" are eligible. So the Top 25 is a rigorous ranking of firms that use Axial and ran a qualifying deal that quarter, not a survey of every advisor in the country. A strong firm that sources buyers through its own relationships and never lists on the platform cannot appear, and neither can one that had a quiet quarter. Salt Creek Advisory is not on these tables. Read a high Axial rank as real evidence of process effectiveness within that pool, and read its absence as no evidence either way.

Treat other signals more carefully. Awards are verifiable when the awarding body publishes its own winners, which is why we link to the awarding organization rather than the firm's press release wherever possible. Self-reported statistics (close rates, aggregate transaction volume, "#1" claims) are not independently audited, and we label them as self-reported throughout rather than repeating them as established fact.

How We Evaluated These Firms

Every firm below was assessed against five criteria that determine whether it fits an owner selling a business around $20 million. First, does its stated deal range genuinely include a company this size, rather than treating it as an outlier at the bottom of the range. Second, who does the work: does a principal or managing director run the process, or does it pass to junior staff after signing. Third, is the fee structure disclosed clearly enough to compare against the benchmarks above. Fourth, does the firm have demonstrable reach into the buyers most likely to acquire a business in your sector. Fifth, is its claimed track record verifiable from a source other than its own marketing.

Where a claim comes only from a firm's own website or press release, we say so and cite it to that firm rather than presenting it as independent fact. Where a figure is a career-long total across a team's whole working history rather than the firm's own deal count, we flag the distinction, because the two get conflated constantly in this industry. Where we could not confirm something, we left it out instead of filling the gap with marketing language. We also include firms that compete directly with us and describe honestly what they do better than we do.

Questions to Ask Before You Hire

Once you have narrowed the field, a short, direct conversation tells you more than any pitch deck. These six questions are designed to surface how a firm actually operates rather than how it markets itself.

1. How many transactions has your team closed in my industry or a similar one?
2. Who exactly will be handling my deal day to day, and how often will I actually hear from that person?
3. What does your typical buyer outreach process look like: how many buyers, and how are they sourced?
4. What is your fee structure, and how much is contingent on a closed transaction?
5. Can you walk me through a recent process, without disclosing confidential details, from engagement to close?
6. How long, realistically, should I expect this process to take from start to close?

What Matters Most at $20 Million

Beyond the advisor's resume, a few practical factors tend to matter most for a $20 million sale:

• Alignment of incentives. A success-fee-based structure generally means the advisor is only paid when you are.
• Bandwidth. A firm handling too many deals at once may not be able to give yours the attention it deserves.
• Confidentiality practices. Ask exactly how the firm keeps your name out of the market before a buyer signs an NDA.
• Cultural fit. You'll be working closely with this person through months of due diligence and buyer negotiations, so make sure it's a relationship you actually want, not just a resume you're impressed by.
• Buyer-side perspective. Advisors who have worked inside private equity firms or as acquirers often anticipate the questions, diligence requests, and negotiating tactics a buyer will use, which can help you prepare before those pressures arrive rather than reacting to them mid-process.
• Industry-specific reach. A generalist can run a competent process, but a firm that already knows the active acquirers in your sector can often reach the right buyers faster and frame your business in the language those buyers use to value companies like yours.
• Valuation grounding. Before you compare advisors, it helps to know roughly what your business is worth and how buyers will price it. Our guides to EBITDA and valuation basics and the best business valuation firms for a sale cover how that number gets built, and strategic versus private equity buyers explains why two credible bidders can value the same company differently.

None of these factors is decisive on its own. The point is to weigh them together against your specific situation, rather than defaulting to whichever firm has the largest logo or the longest track record on paper.

Best M&A Advisors for a $20 Million Company Sale

Owners selling a $20 million company tend to research the same short list of firms before deciding who to call. Below are twelve worth knowing, starting with where Salt Creek fits and why, followed by other respected lower middle market advisors, each paired with the kind of owner it tends to serve best. Every firm here does real work for real clients; the goal is to find the right fit for your situation, not to crown a single winner.

As you read, it helps to notice what distinguishes these firms from one another, because at a glance many of them look similar. A few, like Peakstone and Madison Street, are larger platforms with deep benches and international reach. Others, like Hill View Partners and Salt Creek, are deliberately small so that the senior people stay on your deal from first call to close. Some specialize by transaction type, such as Prairie Capital's ESOP focus, and others by industry, such as Caber Hill in healthcare and facility services or The Advisory in essential-services trades. A handful are franchise or network models that trade consistency for reach. None of these approaches is inherently better; the question is which one matches the business you are actually selling and the outcome you care most about, whether that is the highest headline price, the most certainty of closing, or a specific structure like employee ownership.

Comparison at a Glance

Before the profiles, here are all twelve firms side by side. Ranks shown are Axial league-table placements, which carry the methodology and the eligibility limits described above; everything else is each firm's own stated focus. The order follows the profiles below and is not a ranking.

Salt Creek Advisory Best Fit

Salt Creek Advisory is a family-owned lower middle market investment bank based in Chicago, working with businesses in the $2 million to $75 million revenue range ($500,000 to $5 million EBITDA). A $20 million-revenue company sits squarely in that band, which means it gets the founders' direct attention rather than being routed to a rotating cast of associates. Co-founders Jack and Connor Pitts run every engagement personally, and both have spent their careers on the buyer's side of the table. Jack studied at Vanderbilt, then worked inside the private equity firms Blue Wolf Capital and Kingfish Capital. Connor trained at the middle-market advisory firm Brown Gibbons Lang & Company before spending three years inside Cadence Education, working through more than 40 acquisitions. That background matters at this size. The people most likely to buy a $20 million company are private equity funds and strategic acquirers who negotiate deals for a living. Having advisors who have sat in those exact seats changes how a process is run, and how hard the other side can push. Salt Creek charges no retainer at all: the firm is paid a success fee earned at closing and nothing before it. Against the benchmarks above, where roughly three-quarters of advisors bill a monthly work fee and only 54% credit it back, that puts the whole fee at risk on getting your deal closed.

The honest tradeoff is capacity and coverage. A firm where both founders work every deal personally can only run a small number of engagements at once, so there are periods when we are the wrong answer simply because we cannot give a new mandate the attention it needs. Our sector depth is real in early childhood education, business services, and industrials, and thin outside them: an owner selling a healthcare services business, a technology company, or a specialty manufacturer in a vertical we do not know well is better served by a firm that already knows those acquirers. We are also a young firm without a decades-long transaction list or a published league-table rank, and for some owners that history is worth paying for. If your situation calls for an ESOP, a genuine cross-border auction, a capital raise alongside a partial sale, or a specialist in a sector we do not cover, several firms below are a better fit than we are, and we would rather say that here than discover it three months into a process.

Best for: a $20 million owner who wants both principals working the deal directly, with negotiators who understand how private equity and strategic buyers actually think. If you need an ESOP specialist, cross-border reach, or deep expertise in a sector outside ECE, business services, or industrials, choose accordingly from the firms below.

Peakstone Group

Peakstone Group is a Chicago investment bank founded in 2008, with more than 40 investment banking professionals whose managing directors average over 25 years of experience (Peakstone). Its managing directors have collectively executed 500-plus transactions and raised more than $200 billion in capital over their careers, a career-long total rather than a Peakstone-only deal count. Axial, an independent M&A network, has ranked Peakstone the #1 lower middle market U.S. investment bank in Q2 2021, full-year 2022, and again in full-year 2024 (Axial). Beyond sell-side M&A, the firm also offers capital raising and restructuring services, so it can bring a broad institutional platform to a mandate. For an owner whose situation is not a clean sale, for example one who wants to take some chips off the table while raising growth capital, that range of services under one roof can be an advantage. The trade-off of any firm this size is that a $20 million deal sits toward the smaller end of what a large bench typically handles, so it is worth confirming which specific banker will own your process day to day.

Best for: owners who want a large, deeply staffed platform and are comfortable being one mandate among many.

Transworld Business Advisors

Founded in 1979 and headquartered in West Palm Beach, Florida, Transworld runs a franchise model with more than 1,000 brokers across 250-plus offices worldwide (Transworld). That footprint makes it one of the most recognizable names in "main street" business sales, and the firm also handles franchise consulting and development, with current territory startup costs of $104,105 to $131,055 for its own franchisees (FranchiseDirect). Because each office is independently owned, the experience level and the depth of any given competitive process can vary from broker to broker.

Best for: owners of smaller, simpler businesses who want a local broker and don't need a structured, multi-buyer investment-banking process.

Viking Mergers & Acquisitions

Viking was founded in 1996 by father and son Brad and Jay Offerdahl (Viking) and works deals valued from $1 million to $150 million-plus. The firm reports selling more than 950 businesses, an 85% closing rate (roughly three times the commonly cited national average), and asking-price realization of at least 96% (Viking) — figures that, like most broker performance claims, are self-reported rather than independently audited. More than half of its advisors are former business owners themselves, which shapes how the firm relates to sellers, and Viking has been expanding its footprint, opening an office in Memphis in April 2026 (its 19th location) and Philadelphia in February 2026.

Best for: owners in Viking's Southeast and Mid-Atlantic footprint who value working with advisors who have run companies themselves.

Protegrity Advisors

Protegrity Advisors focuses on the $10 million to $100 million revenue range and, having relocated its headquarters to Melville, New York in 2026, also keeps a South Carolina office (Protegrity). The firm is a member of Pandea Global M&A, a network spanning more than 30 countries and 68 offices (Pandea), which extends its reach into cross-border buyers. Axial, an independent M&A network, ranked it #10 in its 2024 Lower Middle Market Investment Banking League Table and #12 in its 2025 table (Axial), and its leadership includes President Mark Pollack.

Best for: owners who want access to an international buyer network alongside a focused lower middle market practice.

Cornerstone Business Services

Based in Green Bay, Wisconsin and founded in 2001, Cornerstone celebrated its 25th anniversary in January 2026 (Cornerstone) and works across a $5 million to $250 million revenue range. It takes a team-based approach built around a proprietary "Assurance 360" process designed to generate multiple competing offers rather than negotiating with a single buyer. The firm serves a broad set of industries including agriculture, distribution, professional services, healthcare, food and beverage, logistics, and technology.

Best for: owners who want a larger internal team and a defined process aimed squarely at driving competitive offers.

Prairie Capital Advisors

Based in Oakbrook Terrace, Illinois, Prairie Capital Advisors specializes heavily in ownership-transition and ESOP (employee stock ownership plan) advisory for the lower middle market, and is itself majority ESOP-owned. Its award record is verifiable against the awarding body's own published winners. Global M&A Network gave it M&A Atlas Awards between 2018 and 2024, across categories including Americas USA, Canada, Private Equity, Transport and Services, and Materials M&A (Global M&A Network). It also won “ESOP · Boutique Investment Bank of the Year” in 2022 and “ESOP Investment Bank of the Year” in 2023. That depth makes it a natural fit for owners weighing an employee-ownership path rather than a straight third-party sale.

Best for: owners specifically exploring an ESOP or a structured ownership transition.

Hill View Partners

Hill View Partners, founded in 2016 by Arthur Petropoulos and based in Providence, Rhode Island, splits its practice into two explicit tracks: a core group serving owners with $5 million to $20 million of EBITDA, and a separate "1-to-4" track built for owners with $1 million to $4 million of EBITDA (Hill View). That structure is worth noting, because it means a smaller business is served by a team organized around smaller businesses rather than squeezed into a process designed for larger ones. The firm reports more than $1 billion in cumulative transaction experience across 100-plus completed engagements, and Axial ranked it #3 on its Top 25 Lower Middle Market Investment Banks for Q1 2026 (Axial). Its concentration on the smaller end of the lower middle market means a $20 million-revenue business is comfortably within its core zone rather than an outlier the firm rarely sees. That focus is worth weighing carefully: an advisor who works this size band every week tends to have realistic expectations about valuation, buyer behavior, and timelines at this level, instead of applying assumptions borrowed from much larger transactions where the buyer universe and negotiating dynamics are different.

Best for: owners at the smaller end of the lower middle market who want a boutique that lives in that range every day.

ACT Capital Advisors

ACT Capital Advisors, based in Mercer Island, Washington, brings a 40-year history (founded 1986) with more than 250 closed transactions and over $2.5 billion in wealth unlocked for clients (ACT), and reports an 89.7% success rate, a figure the firm calls "industry-leading" and that is not independently audited. The firm runs a structured "Auction Process" designed to maximize value, and Axial, an independent M&A network, ranked it #8 on its Top 25 Lower Middle Market Investment Banks for Q1 2026 (ACT). It has also appeared on Axial's Top 50 sector lists for industrials (2026), healthcare (2023), and software (2022) M&A advisors.

Best for: owners who want a long-tenured firm with a formal, competitive-auction methodology.

Caber Hill Advisors

Founded in 2014 by Craig Castelli and based in downtown Chicago (Caber Hill), Caber Hill Advisors focuses on healthcare, facility services, and manufacturing. It is a member of the Cornerstone International Alliance (Cornerstone International Alliance) and, per Axial's Top 25 Lower Middle Market Investment Banks for Q1 2026, was ranked #20 (Axial). It positions itself deliberately between local business brokers and large investment banks. That middle position can suit owners who want more process than a broker typically runs but less overhead than a national bank. Its industry concentration is the thing to weigh here: a firm that already knows the active acquirers in, say, healthcare services can often reach the right buyers faster and speak their valuation language, which matters more in specialized sectors than a generalist's broader but shallower reach.

Best for: Chicago-area owners in healthcare, facility services, or manufacturing looking for a specialized boutique.

Madison Street Capital

Madison Street Capital, founded in 2005, is now headquartered in Austin, Texas, with additional offices including Chicago (Madison Street), and reports a presence across North America, Africa, and Asia, though it does not name a specific Asian office. Axial, an independent M&A network, ranked it #5 on its Top 25 Lower Middle Market Investment Banks for Q1 2026 (Axial). The firm works across a wide industry set spanning technology, pharmaceuticals, healthcare, aerospace, construction, consumer markets, manufacturing, transportation, media, and financial services, and as of mid-2026 reported 48 total deals, split between 22 M&A transactions and 26 funding rounds.

Best for: owners who specifically need international buyer reach or a mix of M&A and capital-raising support.

The Advisory Investment Bank

Founded in 2024 and based in La Jolla, California, The Advisory Investment Bank focuses exclusively on "essential services" businesses (HVAC, plumbing, electrical, landscaping, pest control, fire safety, waste management, roofing, insurance, and 30-plus other trade verticals) generating $2 million to $100 million in revenue with at least five years of operating history (The Advisory). Its standout feature is a proprietary AI platform for buyer identification that maintains profiles on more than 4,500 private equity firms and strategic acquirers; it is a genuinely notable piece of technology that can accelerate the earliest and most tedious part of a sale process, mapping the buyer universe. Since the firm is not yet two years old, its volume figures cover roughly its first full year of operation: it self-reports more than $630 million in 2025 transaction volume across 81 deals, targets $1 billion-plus in 2026, advertises "30 Days to First Offer," and works on a 100% success-fee model with no retainers or upfront fees. It describes itself as "the #1 investment bank in America exclusively for essential services," which is its own positioning, though it now carries independent backing as well: Axial ranked the firm #1 among all lower middle market investment banks for Q2 2026, from a pool of more than 400 firms (Axial).

Best for: owners of trades and essential-services businesses who want deep vertical focus and an AI-accelerated buyer search.

Summary Table

The profiles above cover specific firms; the recap below zooms back out to the broad categories of advisor an owner weighs at this size, lining up deal-size focus, principal involvement, and fee structure side by side. Use it as a quick gut-check on where any firm you are considering actually sits.

Fit Beats the League Table

The "best" advisor for a $20 million sale is not a name on a ranked list. It's the firm whose deal-size focus, industry background, and process actually match this transaction. Use deal-size fit, relevant experience, direct principal involvement, and process discipline as your filters, and call two or three firms, ask them the six questions above, and choose based on how they actually answer, not how their marketing reads.

Most of the firms profiled here are credible operators with real track records; several would do a capable job with the right client. The differences that matter at $20 million are rarely about competence in the abstract. They are about fit. Will the people you meet in the pitch still be answering your calls in month seven? Do the firm's buyer relationships line up with your industry? Are its incentives tied to closing your deal at the right number? A short, honest comparison against those questions will tell you more than any league table, and it costs nothing but a few conversations before you sign anything.