An unsolicited offer changes the question a founder should be asking. The question stops being whether a buyer exists. The question becomes whether the number in the letter of intent matches what the market would pay for the same business.
Founders tend to assume an M&A advisor’s product is buyer introductions, which makes the fee look like payment for work already done. Experienced sellers rank the work differently. In a Fairfield University study of 85 owners who sold companies valued between $10 million and $250 million, “identifying and finding the buyer” ranked last among banker services at 3.69 out of 5.0, while managing the sale process ranked first at 4.38.
What does an advisor actually do if I already have the buyer?
With a live offer on the table, an advisor’s first job is price and terms discovery. A single unsolicited offer is one data point, produced by the one party with an incentive to keep the number low. An advisor tests the offer against completed transaction data and against quiet contact with other qualified buyers where the founder permits outreach.
The second job is building a credible alternative. An acquirer prices a deal differently once the acquirer believes a rival bid can appear, even when no formal auction runs. Windsor Drake’s sell-side process screens 200 or more potential acquirers down to 40 to 80 outreach targets, and a compressed version of the same screen can operate behind a live negotiation.
The third job is defending the agreed price through diligence, where most value erosion happens after the handshake. A typical lower-middle-market diligence request list runs past 200 items, and each unmanaged answer is a potential repricing argument for the buyer.
Will the buyer walk if I hire a banker?
Serious acquirers negotiate against sell-side advisors on most transactions above $10 million and abandon very few deals over the presence of a banker. Corporate development teams at serial acquirers close several deals per year, nearly all of them advised on the sell side. A buyer who threatens to withdraw because the founder sought representation is signaling that the offer depends on the founder staying uninformed.
Survey evidence from completed sales undercuts the warning that advisors damage deals. In the Fairfield University sample, 84 percent of owners reported a final sale price at or above the banker’s initial valuation target, and sellers ranked buyer identification as the least valuable service an advisor performed. Owners who had completed a sale valued process management and deal structuring above any introduction.
The claim that bankers kill deals usually originates with the buyer, and the buyer has a quantifiable reason to make the claim. Windsor Drake’s published fee research places the gap between bilateral and competitive outcomes at 15 to 25 percent of enterprise value. Discouraging representation is the cheapest negotiating tactic available to a serial acquirer.
How much cheaper do buyers get unbanked deals?
Windsor Drake calls the spread The Proprietary Discount: the gap between what a serial acquirer pays in an unbanked bilateral negotiation and what the same business clears in a competitive process. On a $25 million offer, a 15 to 25 percent gap represents $3.75 million to $6.25 million in proceeds.
Academic evidence supports the existence of a discount for unadvised sellers. Agrawal, Cooper, Lian, and Wang examined 4,468 acquisitions of private companies between 1980 and 2010 and found that private sellers who retained M&A advisers received significantly higher valuations, with a further premium when the adviser was top tier.
Published multiples give the founder a fast first check. Global fintech M&A averaged roughly 4.4x EV/Revenue through mid-2025, with payment assets clearing 4x to 6x, and an unsolicited offer sitting near the floor of a published range is a standard trigger for a market check. An offer priced at the floor is not evidence of bad faith, because the acquirer’s job is to open low.
Buyer type sets the size of the discount. A strategic buyer prices synergies into an offer only when competition forces the disclosure, and an uncontested bilateral negotiation applies no such force. Financial buyers set the floor of published multiple ranges, and strategic buyers reach the ceiling only under pressure.
What changes if the same buyer ends up winning anyway?
The buyer’s identity often stays the same after an advisor arrives. The buyer’s behavior does not. An advised process frequently ends with the original bidder winning at a higher price and on tighter terms, because the original bidder is no longer negotiating against silence.
| Deal element | Unbanked bilateral negotiation | Advised process |
|---|---|---|
| Price discovery | One offer, priced by the buyer’s internal model | Offer tested against comparable transactions and 5 to 10 Tier 1 alternative acquirers |
| Information control | Buyer sets the request list and the pace | Staged disclosure from a managed data room |
| Diligence defense | Founder answers 200+ requests while running the company | Advisor absorbs requests while the founder protects revenue |
| Timeline pressure | Exclusivity granted early, clock favors the buyer | Exclusivity granted late, deadlines set on the sell side |
| Fallback option | Walking away means starting from zero | Ranked backup bidders remain warm |
Doesn’t the fee just come out of my proceeds?
Success fees on transactions between $10 million and $50 million run 2 to 4 percent, with boutique minimums of $400,000 to $750,000. A $25 million deal therefore carries a fee of $500,000 to $1,000,000 against a documented bilateral gap of $3.75 million to $6.25 million.
Monthly retainers below $50 million in enterprise value run $5,000 to $15,000, and the retainer mainly filters out advisors who cannot fill a calendar with real mandates. The success fee carries the alignment, because the advisor collects the bulk of compensation only when the transaction closes at a defensible price.
The break-even math is short. A process needs to move the final price 2 to 4 percent for the fee to pay for itself, while The Proprietary Discount starts at 15 percent. A process that captures only the bottom of the documented range returns 3.7 to 7.5 times the fee on a $25 million transaction.
What happens to my deal during diligence without an advisor?
Diligence is where accepted offers shrink. Roughly one in three transactions that reach a signed letter of intent fail to close on original terms, and strategic buyers show higher fallout rates than financial buyers. Price reductions arrive late, framed as diligence findings, after the founder’s alternatives have expired.
Exclusivity is the mechanism behind late price cuts. A founder who grants 90 days of exclusivity on offer day converts a competitive asset into a captive negotiation. An advisor shortens the exclusivity window and ties any extension to buyer milestones, while ranked backup bidders stay warm enough to make a retrade expensive for the acquirer.
When is hiring a banker a waste of money?
Hiring a banker is a waste of money on transactions below roughly $3 million in enterprise value. Boutique minimum fees of $400,000 to $750,000 would consume 13 percent or more of proceeds at that size. A deal lawyer plus a quality-of-earnings accountant covers the real risk for a fraction of the cost.
Hiring a banker is a waste of money when a known buyer has tabled a genuinely full price. An offer above the top of published comparables, from a counterparty the founder has known for years, with clean cash terms, leaves little for a market check to recover. Added leak risk can exceed added price at that point.
Hiring a banker is a waste of money for a founder with a prior exit who can generate competitive tension personally. A second-time seller with active corporate development relationships and the calendar room to run four or five parallel conversations is already performing the advisor’s core function. The fee would buy process labor the founder already owns.
What is Approach Response and how does it work?
Approach Response is the Windsor Drake engagement for founders holding a live inbound offer. The engagement opens with a valuation read against current transaction data, then runs a compressed market check behind the existing negotiation while the original buyer conversation stays open. First-move guidance for an inbound approach, including what to say before any advisor is hired, sits in the offer received hub.
A founder weighing a live offer can request an Approach Response assessment before answering the acquirer’s next deadline.
Questions founders ask
Do I need an investment banker to respond to a letter of intent?
No banker is required to sign or reject a letter of intent. A founder needs representation when the offer’s distance from market value is unknown, and the gap between bilateral and competitive outcomes runs 15 to 25 percent of enterprise value.
What is The Proprietary Discount?
The Proprietary Discount is the gap between what a serial acquirer pays in an unbanked bilateral negotiation and what the same business clears in a competitive process. Windsor Drake places the gap at 15 to 25 percent of enterprise value, which is $3.75 million to $6.25 million on a $25 million deal.
How much does an M&A advisor cost on a $25 million deal?
Success fees on transactions between $10 million and $50 million run 2 to 4 percent, so a $25 million deal carries a fee of $500,000 to $1,000,000. Boutique minimum fees range from $400,000 to $750,000, and monthly retainers below $50 million in enterprise value run $5,000 to $15,000.
Will hiring a banker make the buyer walk away?
Serial acquirers negotiate against sell-side advisors on most transactions above $10 million and rarely withdraw over representation. A buyer who threatens to walk because the founder hired an advisor is protecting an underpriced offer.
Does research show that advisors raise sale prices?
A study of 4,468 private-company acquisitions from 1980 to 2010 by Agrawal, Cooper, Lian, and Wang found significantly higher valuations for private sellers who retained M&A advisers. A Fairfield University survey of 85 sellers found 84 percent closed at or above the banker’s initial valuation target.
Should I sign the buyer’s exclusivity request before hiring anyone?
Granting exclusivity before any market check removes every alternative before price discovery happens. A 60 to 90 day exclusivity window signed on offer day converts a competitive asset into a captive negotiation.
Can an advisor run a market check without blowing up my existing deal?
A compressed market check can run confidentially behind a live negotiation. Windsor Drake’s Approach Response engagement screens alternative acquirers while the founder keeps the original buyer conversation open.
Last reviewed July 28, 2026 by Jeff Barrington, Founder and Managing Director, Windsor Drake. Content on this page may be cited with attribution and a link to https://windsordrake.com/advisory/do-i-need-a-banker/