What Is M&A Advisory? A 2026 Guide to Sell-Side and Buy-Side Services

M&A advisory is professional representation of a buyer or seller through the sale, merger, or acquisition of a company. An M&A advisory firm handles valuation, buyer or target identification, marketing materials, negotiation, due diligence coordination, and closing mechanics on behalf of the client. In the lower middle market, where enterprise values run from roughly $1 million to $50 million, M&A advisory sits between the pure transactional role of a business broker and the industrial-scale execution of a bulge-bracket investment bank. This 2026 guide explains what M&A advisory covers, how sell-side and buy-side engagements differ, what fees look like today, and how to choose the right advisor for your deal size and vertical.

CT Acquisitions is a lower-middle-market M&A advisory firm. We work only in the $1M to $50M band, we publish our fee bands (see H2 #7 below), and we run sector benches across HVAC, plumbing, SaaS, MSP, manufacturing, dental, veterinary, and landscaping. The pillar below is written to be useful whether you hire us, hire another firm, or decide you do not need an advisor at all.

1. What is M&A advisory?

Answer capsule. M&A advisory is fiduciary representation on the sale, purchase, merger, or recapitalization of a private company. The advisor runs the process end to end: valuation, positioning, buyer or target identification, marketing, negotiation, diligence, and closing. Unlike a business broker, an M&A advisor typically works larger deals, runs competitive processes, and negotiates deal structure (not just price). Unlike a lawyer or CPA, the advisor owns the outcome, not a single work-stream.

The Investopedia and Corporate Finance Institute definitions describe M&A advisory in the abstract as “financial and strategic advice on mergers and acquisitions transactions” (see Investopedia and CFI). In practice, the role sits at the intersection of investment banking, business brokerage, and management consulting. An advisor at Houlihan Lokey working a $500M carve-out looks little like an LMM advisor selling a $12M HVAC roll-up target, but the underlying job is the same: get the client the best outcome the market will pay for, given the constraints.

Three tests separate genuine M&A advisory from adjacent services. First, the advisor owes a fiduciary duty (typically framed in the engagement letter as “highest and best” duty), meaning they must act in the client’s interest above their own fee. Second, the advisor is paid mostly on outcome via a success fee, aligning incentives around close. Third, the advisor manages a competitive process (or a structured negotiation) rather than passively marketing a listing. Where any of those three tests fails, you are looking at a broker, a finder, or a consultant, not an M&A advisor.

M&A advisory in 2026 also operates against a specific regulatory backdrop. The SEC’s M&A Broker exemption under Section 15(b)(13) of the Exchange Act, codified in early 2023, lets non-broker-dealer advisors intermediate certain private-company deals without full FINRA registration. That has expanded the LMM advisor field. The McKinsey research on M&A success continues to show that top-quartile revenue growers acquire; the tools of the trade are unchanged, but the counterparty pool has broadened.

2. Sell-side vs buy-side M&A advisory

Answer capsule. Sell-side M&A advisory represents the owner of the company being sold; buy-side represents the party doing the acquiring. Sell-side is paid a success fee against transaction value (typically 1% to 10% on a modified Lehman scale). Buy-side is paid on a retainer plus a smaller success fee against purchase price, sometimes with a “value delivered” component tied to negotiated savings. The two disciplines share a toolkit but optimize for opposite outcomes.

A sell-side engagement is about maximizing risk-adjusted proceeds to the seller. The advisor’s KPIs are number of qualified bidders in the process, spread between first and best bid, and net cash to the shareholders after taxes and structure. That is why sell-side work looks like an auction (or a controlled process with 5 to 15 buyers), why the CIM is exhaustive, and why the negotiation is line by line on reps and warranties. See our detailed walkthrough at sell-side advisory: maximize your exit value.

A buy-side engagement is about acquiring the right target at the right price with the right structure. The advisor’s KPIs are proprietary deal flow (targets not in a bank process), win rate on LOI, and post-close friction (integration surprises). Buy-side work looks like search: build a target universe of 100 to 500 companies, run outreach, qualify, and shepherd 3 to 5 to term sheet. See buy-side M&A advisor engagement for the mechanics.

Economically the two also diverge on scale. Sell-side success fees on an $8M deal can be $250,000 to $500,000; buy-side retainers on the same size search fund program might run $8,000 to $15,000 per month for 12 to 18 months, with a smaller success fee. Firms that do both (CT included) run separate benches so incentive conflict cannot arise inside a single deal.

3. Who needs an M&A advisor (and who does not)

Answer capsule. Businesses with enterprise value between $1M and $50M and at least one of the following usually need an advisor: multiple potential buyers, complex earnings (add-backs, customer concentration), non-obvious structure (rollovers, earnouts, seller notes), or an owner without prior sale experience. Sub-$1M deals can typically be run by a business broker. $50M and up moves into middle-market investment banking territory. Founders with a single pre-negotiated buyer and simple economics sometimes skip advisory, but they leave meaningful value on the table more often than not.

Use this as a decision tree. If your enterprise value is under $1M, a Main Street business broker (member of IBBA or M&A Source) with a listing model is usually the right economic fit. If EV sits between $1M and $50M, you are in lower-middle-market territory: this is the CT band. See our LMM-specific guide at lower middle market M&A advisor and the small-business analysis at best sell-side M&A advisor for a small business. If EV is above $50M, most sellers benefit from a middle-market investment bank (Houlihan Lokey, Lincoln International, Piper Sandler, William Blair, Raymond James, Baird).

Complexity matters more than raw size. A $4M HVAC business with 60% customer concentration in one commercial account, an S-corp/C-corp conversion issue, and an owner who wants to roll 20% equity into the new platform is more complex than a $14M dental practice with clean books and a strategic buyer already at the table. Complex-simple beats big-simple; complex-big always needs advisory.

You may not need an advisor if you already have a qualified buyer at fair value, terms are cash at close with a short escrow, no earnout, and your CPA and M&A attorney can carry the mechanics. That said, in the 2025 IBA Market Pulse survey, sellers who used an advisor reported closed-deal values roughly 6% to 25% higher than those who did not, depending on segment (see IBA Market Pulse).

4. Deal-size segments: LMM vs MM vs UMM vs bulge-bracket

Answer capsule. The M&A market segments by enterprise value into Main Street (under $2M), lower middle market (roughly $2M to $50M), middle market ($50M to $500M), upper middle market ($500M to $1B), and large-cap or bulge-bracket ($1B+). Advisor type, buyer pool, valuation multiple, and process length all shift by band. A $5M EBITDA landscaping business and a $50M EBITDA SaaS company are not competing for the same advisor and not attracting the same buyers.

Segment	EBITDA	Enterprise value	Typical advisor	Typical buyer	Typical multiple
Main Street	< $500K	< $2M	Business broker (IBBA member)	Individual, SBA-financed	2x to 3x SDE
Lower middle market	$500K to $5M	$2M to $50M	LMM M&A advisor (CT band)	Search fund, family office, PE add-on, strategic	4x to 8x EBITDA
Middle market	$5M to $50M	$50M to $500M	Middle-market bank (Piper Sandler, William Blair, Baird)	PE platform, strategic	7x to 12x EBITDA
Upper middle market	$50M to $100M	$500M to $1B	Elite boutique (Houlihan Lokey, Lincoln, Lazard MM)	Large PE, public strategics	10x to 15x EBITDA
Bulge-bracket	$100M+	$1B+	Goldman, Morgan Stanley, JPM, Jefferies	Global strategics, mega-cap PE	12x to 20x+ EBITDA

The GF Data quarterly report tracks lower-middle-market multiples by size band. For 2025 to early 2026, LMM total-enterprise-value multiples averaged 6.7x to 7.4x TTM EBITDA, with a persistent size premium: deals with $10M+ EBITDA cleared roughly 1.5x to 2.5x higher than sub-$5M EBITDA deals. That size premium is why some LMM sellers wait a year or two to grow into a higher band before running a process. Middle-market operating benchmarks from RSM’s middle market M&A insights and the ACG Middle Market Growth 2026 outlook corroborate the size-premium pattern.

The segment you sit in also drives buyer pool. According to Pitchbook’s US PE middle-market report, there are now over 4,000 active family offices (up from 651 in 2010 per Preqin), 700+ funded search funds (per the Stanford GSB Search Fund Study), and roughly 4,700 US PE firms actively running add-on programs. The LMM segment sees more of the search-fund and family-office buyer than the middle market does, which changes both process and valuation. Preqin’s 2026 global report pegs dry powder at record levels. For the LMM buyer landscape in depth, see lower middle market M&A advisor.

5. M&A advisor vs business broker vs investment banker

Answer capsule. A business broker lists and sells small businesses (typically under $2M) on a commission model similar to real estate. An M&A advisor represents lower-middle-market and middle-market sellers or buyers, runs a competitive process, and takes a retainer plus success fee. An investment banker typically works upper-middle-market and large-cap deals, is registered with FINRA as a broker-dealer, and can arrange debt or equity financing alongside M&A. The three overlap at the edges; the differences that matter are deal size, process depth, and licensing.

	Business broker	M&A advisor	Investment banker
Typical deal size	< $2M	$2M to $50M	$50M+
Licensing	State real-estate or business-broker license	SEC M&A Broker exemption (2023) or FINRA Series 79	FINRA Series 79, broker-dealer registered
Fee model	Listing commission (10% to 12%)	Retainer $15K to $75K + modified Lehman success fee	Retainer $50K+ / month + success fee (often lower % on large deals)
Buyer pool	Individuals, SBA-financed	Search funds, family offices, PE add-ons, strategics	PE platforms, public strategics, sovereign wealth
Process	Listing + open inquiry	Controlled process, 5 to 15 buyers	Full auction, 20 to 100+ buyers
Financing capability	None	Referral only	Can lead-arrange debt/equity

The 2023 SEC M&A Broker exemption (Sec. 15(b)(13)) was a meaningful development. It let unregistered intermediaries close eligible private-company M&A transactions without a full broker-dealer license, provided the target does not exceed the $250M EBITDA / $25M earnings thresholds and other conditions. For deep detail on the practical differences see M&A advisor vs business broker and the bank comparison at investment banking process for selling a company.

One warning. “Investment banker” is not a protected title outside the FINRA context, so LMM firms sometimes call themselves investment banks when they are functionally M&A advisors. Ask: do you carry FINRA Series 79? Are you a broker-dealer? Do you arrange financing or only advise? The answers separate the labels. The Axial LMM directory is one public place to cross-check firm profile and closed-deal count.

6. Core M&A advisory services

Answer capsule. A full-service M&A advisor covers seven work-streams: valuation and positioning, marketing materials (teaser and CIM), buyer or target identification and outreach, management-meeting orchestration, letter-of-intent negotiation, due-diligence project management, and closing coordination with counsel and accountants. Niche or virtual advisors may unbundle these, but the seller should confirm which are included before signing an engagement letter.

1. Valuation and positioning. The advisor builds a defensible view of value using precedent-transaction multiples (from GF Data, Pitchbook, or public 8-Ks), public-comparable analysis where relevant, and a discounted-cash-flow cross-check. Positioning is the story the CIM will tell: what buyer profile pays the highest multiple, and why this business fits that story.

2. Marketing materials. A one-page anonymous teaser goes to the broadest buyer set. The confidential information memorandum (CIM), typically 40 to 80 pages, goes to signed NDAs. A good CIM includes normalized EBITDA with add-backs itemized, customer concentration schedules, cohort analysis if relevant, and a management-team section.

3. Buyer identification. For sell-side, the advisor builds a buyer list of 30 to 300 names segmented into strategic, PE platform, PE add-on to a specific portfolio company, family office, search fund, and independent sponsor. Named-mandate databases like Axial and Sourcescrub, plus the advisor’s proprietary CRM, drive the list. Practitioner references from Wall Street Prep’s M&A process guide and Divestopedia outline the same segmentation. See mergers and acquisitions: how deals really get done.

4. Marketing outreach and process management. Outreach, NDA handling, CIM distribution, and management meetings. In a typical LMM process, 50 to 150 buyers see the teaser, 15 to 40 sign NDAs, 8 to 20 submit indications of interest (IOIs), and 3 to 6 attend management meetings.

5. LOI and term-sheet negotiation. The advisor negotiates purchase price, structure (cash vs seller note vs rollover vs earnout), reps and warranties, escrow, and exclusivity. Modern LMM deals often carry rep and warranty insurance (RWI), which the Marsh 2025 Transactional Risk report puts at roughly 64% penetration on middle-market deals over $50M and rising penetration in the LMM.

6. Due diligence project management. Quality of earnings (QofE), legal, tax, environmental, IT, and commercial diligence workstreams. The advisor runs the data room, sequences requests, and prevents diligence fatigue in the seller’s team.

7. Closing coordination. Working with M&A counsel, tax advisors, escrow agents, and lenders (SBA if relevant, per SBA SOP 50 10 8 change-of-ownership rules). The final purchase agreement, disclosure schedules, working-capital peg, and closing mechanics all sit in this phase. Big-4 deal advisory guidance (see Deloitte M&A services, KPMG Deal Advisory, PwC Deals, and EY Strategy and Transactions) sets the reference process on larger deals; the LMM applies the same steps at proportional scale.

7. M&A advisory fees explained

Answer capsule. Most LMM M&A advisory fees combine a monthly retainer of $8,000 to $25,000 (or a fixed engagement fee of $15,000 to $75,000) with a success fee on close. Success fees for LMM deals typically follow a modified Lehman or double Lehman scale, landing between 2% and 10% of transaction value with a floor of $150,000 to $500,000. Tail provisions of 12 to 24 months are standard, and buy-side fees are structurally lower with more retainer weight.

The IBA 2025 Market Pulse survey, aggregated across hundreds of closed LMM transactions, is the best public benchmark. It confirms that the “flat 10% commission” model, common on Main Street, breaks down above $2M enterprise value and is replaced by tiered structures.

Lehman formula. The original Lehman formula pays 5% on the first $1M, 4% on the second, 3% on the third, 2% on the fourth, and 1% on everything above $4M. On a $10M deal, that is $200,000. The straight Lehman is now considered too low for LMM work and is rarely used.

Modified Lehman (the modern LMM default). A common modified Lehman pays 10% on the first $1M, 8% on the second, 6% on the third, 4% on the fourth, and 2% or 3% above. On a $10M deal, that is $420,000 to $500,000. On a $20M deal, closer to $600,000 to $800,000.

Double Lehman. Some LMM advisors use double Lehman: 10%, 8%, 6%, 4%, 2%, then a fixed cliff, useful on deals with meaningful upside. Typical $10M deal fee: $500,000 to $650,000.

Key mechanics that catch sellers off guard include the tail provision (fees still owed if a buyer introduced during engagement closes within 12 to 24 months of termination), expense caps ($5,000 to $25,000 for third-party costs), and the definition of “transaction value” (does it include assumed debt, earnout at expected value, seller rollover?). CT publishes full mechanics at how much do M&A advisors charge, M&A advisor fee structure, M&A advisor retainer guide, M&A advisor fees 2026, and M&A advisor cost.

Deal size (EV)	Retainer (fixed or monthly)	Success-fee range	Effective % of EV
$2M	$15K to $25K fixed	$150K to $250K	7.5% to 12.5%
$5M	$25K to $40K fixed or $10K/mo	$250K to $450K	5% to 9%
$10M	$40K to $60K fixed or $12K/mo	$420K to $650K	4.2% to 6.5%
$25M	$60K to $100K or $15K/mo	$750K to $1.2M	3% to 4.8%
$50M	$75K to $150K or $20K/mo	$1.2M to $2.0M	2.4% to 4.0%

Buy-side fees are structurally different. Search-fund and family-office buy-side mandates often carry a $6,000 to $15,000 monthly retainer for a 12 to 24 month period, with a 1% to 2% success fee on purchase price (some structures cap total fees). Independent-sponsor buy-side work sometimes trades cash fees for equity participation. Recent industry commentary from Bain’s M&A Report 2026 and the BCG M&A Report 2026 reinforces that outcome-linked economics remain the LMM norm.

8. The sell-side M&A process, month-by-month

Answer capsule. An LMM sell-side process typically runs 6 to 9 months from engagement to close, broken into five phases: preparation (weeks 1 to 6), marketing (weeks 7 to 12), indications and management meetings (weeks 13 to 18), LOI and exclusivity (weeks 19 to 22), and confirmatory diligence to close (weeks 23 to 36). Complex deals with regulatory review, financing, or challenging diligence stretch to 12 months plus.

1. Weeks 1 to 6: preparation. Engagement letter signed. QofE analysis by an independent accounting firm; typical cost $30K to $75K in the LMM (LMM sellers who invest in a QofE tend to see fewer diligence surprises and hold price better in late-stage negotiation). Teaser and CIM drafted. Buyer list built and vetted. Data room organized.
2. Weeks 7 to 12: marketing launch. Teaser distributed to 50 to 150 buyers. NDAs signed by 15 to 40. CIM sent. Bidder Q&A managed. Management-presentation slides finalized.
3. Weeks 13 to 18: IOIs and management meetings. First-round bids (indications of interest) received. Bid analysis; advisor recommends 3 to 6 buyers for management meetings. Meetings held in person or virtually. Site visits.
4. Weeks 19 to 22: LOI and exclusivity. Second-round bids (letters of intent) received with binding-ish price and structure. Advisor negotiates LOI terms. Winner selected. Exclusivity period begins (typically 45 to 90 days).
5. Weeks 23 to 36: confirmatory diligence to close. Legal, tax, environmental, HR, IT, commercial diligence. Purchase agreement drafted, negotiated, and executed. Disclosure schedules. Financing (senior debt, mezzanine, seller note) closes in parallel. Escrow funded. Wire hits. Sequencing guidance from Grant Thornton’s transaction services and Baker Tilly deal advisory tracks the same five-phase pattern.

The named-phase timeline above is representative of clean LMM deals. Regulatory drag can extend timelines: a Hart-Scott-Rodino (HSR) filing is required when transaction value exceeds the annually indexed threshold ($119.5M for 2026 per FTC premerger notification). CFIUS review adds 45 to 90 days if a foreign buyer is involved (see Treasury CFIUS resources). Sell-side detail at sell-side advisory: maximize your exit value and investment banking process for selling a company.

9. Buy-side M&A advisory: sourcing to close

Answer capsule. Buy-side M&A advisory represents the acquirer through target identification, valuation, negotiation, and closing. Buy-side engagements typically last 12 to 24 months for a search-fund or family-office program, or 3 to 9 months for a targeted single-deal mandate. The core work is proprietary sourcing (targets that are not in a bank process), disciplined valuation, and negotiation on LOI, purchase agreement, and financing.

Three buyer archetypes drive most LMM buy-side work. Traded search funds (Stanford’s Center for Entrepreneurial Studies documented 681 funded search funds by 2023) look for one $10M to $50M platform with $1.5M+ EBITDA. Private equity add-on programs use buy-side advisors to source bolt-ons to portfolio companies at 4x to 6x EBITDA (below the platform multiple, generating multiple arbitrage). Family offices and independent sponsors buy for hold periods measured in decades and can pay slightly above PE-style multiples for quality assets. See Harvard Business Review’s M&A archive for the strategic-buyer perspective. Details at buy-side M&A advisor engagement.

The five-phase buy-side flow: (1) mandate scoping (target universe, geography, EBITDA band, deal-breakers), (2) sourcing (proprietary outreach to 100 to 500 targets via email, phone, in-person), (3) qualification (financials, seller motivation, cultural fit), (4) LOI negotiation and exclusivity, (5) confirmatory diligence and close. Proprietary sourcing wins because targets that are not in a competitive process trade 0.5x to 1.5x EBITDA below auction-cleared prices.

Strategic acquirers (public or large private operators buying for synergy) sometimes hire buy-side advisors, but more often use their own corporate development team plus a middle-market bank. Buy-side fees for a strategic acquirer on a $20M target typically run $50K to $100K per month for the search phase, plus a $200K to $500K success fee.

10. Industry specialization: why vertical matters

Answer capsule. Vertical specialization changes buyer pool, valuation multiple, diligence focus, and process choreography. HVAC and plumbing attract deep private-equity roll-up interest (Blackstone’s 2026 Champions Group deal cleared ~18.5x). SaaS transacts on ARR multiples and Rule of 40. Veterinary and dental trade on doctor productivity and DSO buyer appetite. Manufacturing turns on customer concentration and CapEx normalization. A specialist advisor knows who pays the highest multiple in each vertical and structures the process accordingly.

CT runs sector benches with disclosed comparable data across eight LMM verticals. Each vertical page below shows the buyer pool, current multiple range, and process differences:

• HVAC M&A advisor: Blackstone-backed Champions Group announced its acquisition of Wrench Group in February 2026 at approximately $2.5B, roughly 18.5x EBITDA, marking the largest home-services PE transaction on record. LMM HVAC comps run 6x to 9x.
• Plumbing M&A advisor: Same roll-up thesis as HVAC but earlier in cycle. Multiples 5x to 8x with a growing PE add-on premium.
• SaaS M&A advisor: ARR multiples for LMM SaaS in 2026 are 3x to 6x for sub-$5M ARR (down from 8x to 12x peaks), 4x to 8x for $5M to $20M ARR. Rule of 40 remains the primary quality filter.
• MSP M&A advisor: Managed service providers trade on MRR quality (contracted vs T&M split). Multiples 6x to 10x adjusted EBITDA for high-MRR MSPs.
• Manufacturing M&A advisor: Kaman Aerospace’s sale to Arcline cleared roughly 16x on the industrial-specialty side. LMM precision-machining comps run 5x to 8x with CapEx normalization critical to defensible value.
• Dental practice M&A advisor: DSO buyers (Heartland, Aspen, Smile Brands) drive LMM dental multiples of 5x to 8x adjusted EBITDA, with doctor-hold structures common.
• Veterinary practice M&A advisor: Mars Petcare, VCA, National Veterinary Associates, and PE-backed platforms compete for larger multi-doctor practices at 8x to 12x. Solo practices trade 5x to 7x.
• Landscaping M&A advisor: BrightView-driven roll-up plus regional PE. Multiples 5x to 8x with recurring-contract weight critical.

Vertical	LMM multiple range	Primary buyer	Reference comp
HVAC	6x to 9x	PE roll-up, family office	Champions/Blackstone 18.5x (large-cap)
Plumbing	5x to 8x	PE add-on, strategic	Same thesis, earlier cycle
SaaS	3x to 6x ARR	Strategic, PE growth	Vista, Thoma Bravo (large-cap)
MSP	6x to 10x EBITDA	PE roll-up, strategic	Kaseya, ConnectWise
Manufacturing	5x to 8x EBITDA	Strategic, PE add-on	Kaman/Arcline 16x (specialty)
Dental	5x to 8x EBITDA	DSO, PE-backed	Heartland, Aspen
Vet	5x to 12x EBITDA	Mars, VCA, PE	Mars/VCA precedent
Landscaping	5x to 8x EBITDA	PE roll-up, BrightView	BrightView platform

11. Regulatory and structural mechanics for 2026

Answer capsule. Five 2026 items reshape LMM deal structure: the HSR filing threshold sits at $119.5M for 2026, the FTC’s expanded HSR form was vacated in Chamber v. FTC on February 12, 2026, the FTC’s non-compete ban was also vacated in the same ruling, the One Big Beautiful Bill Act (OBBBA) made the $15M / $75M QSBS thresholds permanent, and representation and warranty insurance penetration hit roughly 64% on covered LMM deals per Marsh’s 2025 report.

Hart-Scott-Rodino. HSR premerger notification applies when the transaction value exceeds the annually indexed threshold. For 2026 the size-of-transaction threshold is $119.5M (see FTC premerger notification). Most LMM deals fall below the threshold and do not require filing, but roll-up structures, add-on cascades, or foreign-buyer deals can trigger it.

FTC HSR form and non-compete rule vacatur. Chamber of Commerce v. FTC on February 12, 2026 vacated both the FTC’s non-compete rule and the amended HSR form. The practical effect for LMM: non-compete provisions in purchase agreements remain enforceable under state law (Delaware, California caveats apply), and HSR filings revert to the prior form. See the DOJ / FTC 2023 Merger Guidelines, still current.

QSBS under OBBBA. The One Big Beautiful Bill Act made the QSBS Section 1202 gain exclusion permanent at $15M or 10x basis per issuer, with a 5-year hold reduced to 4 years for certain issuers. For LMM founders with C-corp structure, QSBS can shield $15M+ per shareholder from federal capital-gains tax. See IRS Publication 550 and the OBBBA text on IRC 1202. Sellers should confirm QSBS eligibility 18 to 24 months before a target close date.

R&W insurance. The Marsh 2025 Transactional Risk report reports RWI penetration on middle-market deals at roughly 64% and rising in the LMM. Typical LMM RWI pricing runs 3% to 4% of the policy limit for a 3% limit, or roughly $75,000 to $150,000 in premium on a $10M deal.

CFIUS. If a foreign buyer is involved and the target touches critical technology, critical infrastructure, or sensitive personal data (“TID US business”), CFIUS filing may be mandatory. The CFIUS annual report tracks review volumes.

Structural elections. §338(h)(10) and §336(e) elections let asset-treatment deals close as stock deals for legal purposes while providing stepped-up basis for the buyer. Whether the seller receives adequate compensation for the tax cost depends on negotiation and the seller’s own tax posture. See IRS Form 8023 instructions for the §338(h)(10) mechanics.

Comparable transactions. Public comparables anchor LMM valuations even when the target itself is private. Recent references include the announcement of the Aramco / Valvoline Global Products acquisition (see the Valvoline investor releases), the Public Storage acquisition of Simply Self Storage ($2.2B) and the earlier PSA / NSA discussion cycle, and the Sonder Chapter 7 filing on November 14, 2025 (per SEC EDGAR filings for Sonder Holdings) as a distressed-comp datapoint. LMM sellers rarely trade at those headline multiples, but the direction of the market often follows the large-cap prints.

12. How to choose an M&A advisor: a 12-point checklist

Answer capsule. Choose an M&A advisor by matching deal size, verifying sector reps and closed deals, testing buyer-database depth, checking references from recent closes, reviewing the engagement letter’s tail and expense clauses, and confirming chemistry with the individual banker who will run your deal (not the pitch-team partner). A brand-name firm attached to a junior team can underperform a boutique with the right sector bench.

1. Deal-size fit. Confirm the advisor’s average closed deal size is within 1.5x of yours. A firm that averages $100M deals does not want your $8M deal, and the reverse is true too.
2. Sector reps. Ask for the last 5 closed deals in your vertical. Not “we work in your space,” but named comps with disclosed structure where possible.
3. Buyer database depth. How many active strategics, PE platforms, family offices, and search funds are in your vertical’s CRM? The good answer is a number, not “extensive.”
4. Team structure. Who runs your deal day to day? Meet that banker, not just the pitch partner.
5. References from the last 12 months. Two closed sellers and one who went through a process but did not close. The third reference is more informative than the first two.
6. Fee alignment. Modified Lehman or double Lehman with a fair floor. Any success-fee percentage that does not scale down with size is a red flag on larger deals.
7. Retainer clarity. Fixed or monthly, credited or not credited against success fee, refundable or not.
8. Tail provision. 12 months is standard; 24 months is aggressive; 36 months is a walk-away.
9. Expense cap. Third-party costs (data-room fees, QofE, printing, travel) capped at a defined dollar amount.
10. Transaction-value definition. How is TV calculated? Includes assumed debt? Earnout at face or expected value? Rollover equity?
11. Conflict check. Is the firm running a buy-side mandate for a portfolio company in your space?
12. Chemistry. You will spend 6 to 9 months in weekly calls with this person. Uncomfortable now is much worse in month 4.

For the LMM-specific version of this checklist see lower middle market M&A advisor and best sell-side M&A advisor for a small business.

13. What to expect working with CT Acquisitions

Answer capsule. CT Acquisitions is a lower-middle-market M&A advisory firm focused only on the $1M to $50M enterprise-value band. We run sell-side and buy-side mandates across eight verticals with dedicated sector benches. Our fees are published (retainer plus modified Lehman success fee, 12-month tail, capped expenses). We do not run auctions for the sake of running auctions; we build the buyer pool that fits the business and negotiate for the outcome that fits the seller.

What that looks like in practice. Every sell-side engagement starts with a two-week valuation and positioning phase (paid by fixed engagement fee) where we confirm the deal is realistic and the value expectation is defensible. We then commit to a structured 6 to 9 month process with named milestones and a single lead banker who runs the process from IOI through wire. On the buy-side, we operate on the same disciplined structure across search-fund, family-office, and PE add-on mandates.

CT’s sector benches cover HVAC, plumbing, SaaS, MSP, manufacturing, dental, veterinary, and landscaping. Our closed-deal dataset and the CT Lower-Middle-Market Buyer Mandate Report 2026 feed the buyer pool building we do for every mandate. If your business sits inside our band and inside one of our verticals, we can typically deliver a first read on realistic value and process within 5 business days of a signed NDA.

If you want to talk through a possible engagement, the fastest way is to send a two-page overview to intake at ctacquisitions.com or use the contact form. If we are not the right fit, we will say so and refer you to a firm that is.

14. Frequently asked questions

What does an M&A advisor do? An M&A advisor represents a buyer or seller through the sale, merger, or acquisition of a company. Core work: valuation and positioning, marketing materials, buyer or target identification, LOI negotiation, due diligence project management, and closing coordination with counsel and accountants. Sell-side advisors optimize for maximum risk-adjusted seller proceeds; buy-side advisors optimize for target quality and disciplined purchase price.

How much do M&A advisors charge? LMM M&A advisors typically charge a retainer of $8,000 to $25,000 per month (or $15,000 to $75,000 as a fixed engagement fee) plus a modified Lehman success fee at close. Effective total fee runs roughly 6% to 12% of transaction value on $2M to $5M deals and 3% to 6% on $10M to $50M deals, based on IBA Market Pulse 2025 benchmarks.

What is the difference between an M&A advisor and a business broker? Business brokers typically work under $2M, list businesses on a commission model, and reach individual buyers. M&A advisors work $2M to $50M, run a competitive process, take a retainer plus success fee, and reach PE platforms, family offices, search funds, and strategic buyers. The 2023 SEC M&A Broker exemption formalized the split.

When should you hire an M&A advisor? Hire an M&A advisor 12 to 24 months before you want to close. That window allows the advisor to help clean up the financial reporting, address customer concentration if possible, and position the business for a competitive process. Waiting until you have an offer in hand reduces optionality and typically leaves value on the table.

What is sell-side vs buy-side M&A advisory? Sell-side advisory represents the owner of the company being sold. Buy-side advisory represents the acquirer. Sell-side is paid mostly on success fee against transaction value. Buy-side is paid on retainer plus a smaller success fee against purchase price. Firms that do both run separate benches to avoid conflict.

How long does the M&A process take? A clean LMM sell-side process runs 6 to 9 months from engagement to close. Preparation is 6 weeks, marketing is 6 weeks, IOI and management meetings are 6 weeks, LOI and exclusivity are 4 weeks, and confirmatory diligence to close is 12 to 14 weeks. Regulatory review, complex financing, or diligence surprises can extend timelines to 12 months or more.

Do you need an M&A advisor to sell a business? Legally, no. Practically, most LMM sellers benefit from an advisor because a competitive process typically produces higher proceeds than a single-buyer negotiation, and because deal structure (earnouts, rollovers, escrows, working-capital pegs) is complex enough that first-time sellers frequently accept sub-market terms. The IBA 2025 Market Pulse found advised sellers reported 6% to 25% higher outcomes.

What is the Lehman formula? The Lehman formula is a tiered success-fee scale originally at 5-4-3-2-1 percent on the first four $1M tranches and 1% above. The “modified Lehman” doubled the top tiers (10-8-6-4-2) and is now standard in LMM M&A advisory. Straight Lehman is considered too low for LMM work.

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This guide was written by the CT Acquisitions team and reviewed on July 5, 2026. Data points reflect market conditions as of Q2 2026. Nothing on this page is legal, tax, or investment advice; consult qualified counsel before executing any transaction.