The International Business Brokers Association (IBBA) defines a business intermediary as a professional dedicated to serving clients who want to buy or sell businesses. In practice, that single job title stretches across a spectrum: for deals under roughly $2 million the intermediary is usually called a business broker, and above about $5 million the same role goes by M&A advisor or investment banker. What they all share is a mandate to run a confidential, competitive sale process and move an owner from "thinking about selling" to a signed, funded close.
What a Business Intermediary Actually Does
An intermediary sits between a buyer and seller and manages the sale of a privately held company from the first valuation conversation to the closing table. Strip away the title and the core work is consistent: value the business, package it for market, find and screen qualified buyers, protect confidentiality, run the negotiation, and carry the transaction through due diligence to a funded close. Put simply, they represent one side of selling or buying a business and run the deal end to end.
The demand for that work is rising fast. The McKinsey Institute for Economic Mobility projects that roughly six million U.S. small and mid-size businesses will face ownership transitions by 2035 as baby boomers retire, representing up to $5 trillion in enterprise value. More than half of U.S. small business owners are already over 55, and one in four are 65 or older. Most have never sold a company before, which is the gap an intermediary is built to fill.
A capable intermediary does several things a busy owner usually cannot do alone:
- Price the business against real market comparables instead of a number the owner hopes is true.
- Reach buyers the owner would never find, without tipping off employees, customers, or competitors.
- Manufacture competition, because a lone buyer at the table has no reason to stretch on price.
- Keep momentum when financing, diligence, or emotions threaten to stall the deal.
- Absorb the friction of negotiation so the seller and the eventual buyer can still work together after close.
Business intermediaries earn their fee in the messy middle of a transaction, where deals are won and lost on details most owners never anticipated. That is also why the choice of intermediary matters more than the choice of asking price. At Iconic, having guided 200+ businesses through this process, we see the same pattern repeatedly: owners who treat their intermediary as the project manager for the entire sale, not just a listing service, reach the closing table with fewer surprises and stronger terms.
Business Broker, M&A Advisor, or Investment Banker: Matching the Intermediary to Your Deal Size
Business intermediaries specialize by deal size, and getting the match right is the single biggest factor in whether you reach the right buyer pool in a fragmented marketplace. IBBA's own glossary draws the lines: a business broker generally handles Main Street deals under about $2 million, an M&A advisor works the lower middle market from roughly $2 million to $50 million, and an investment banker typically will not engage below $25 million to $50 million in enterprise value.
Those thresholds are rules of thumb, not hard cutoffs, and they exist because buyer pools and complexity change with size. A broker mostly markets to individual buyers and owner-operators. An M&A advisor runs targeted outreach to private-equity groups and regional strategics, and handles the more complex transactions that involve earnouts, rollover equity, and multi-party financing. Investment bankers curate competitive processes for institutional and strategic acquirers on the largest deals.
Pricing conventions shift with size too. Below about $2 million, sales are priced on a multiple of Seller's Discretionary Earnings (SDE), the owner's cash flow before their own salary. Above that, buyers price on EBITDA. In IBBA and M&A Source's Q1 2026 Market Pulse survey, businesses under $500K sold at roughly 2x SDE, the $500K to $1M band at 2.8x, the $1M to $2M band at 3x, and both the $2M to $5M and $5M to $50M segments at about 4x. The multiple nearly doubles as you move up the size ladder, which is why the same company can be worth meaningfully more to a buyer who values it on EBITDA than to one pricing on SDE.
| Dimension | Business Broker | M&A Advisor | Investment Banker |
|---|---|---|---|
| Typical deal size | Under ~$2M | ~$2M to $50M | Above ~$25M to $50M |
| Buyer pool | Individuals, owner-operators | PE groups, regional strategics | Institutional, strategic acquirers |
| Pricing basis | SDE multiple | EBITDA multiple | EBITDA, DCF |
| Fee model | ~10% success fee | Lehman / Double Lehman | Retainer plus tiered fee |
| Marketing reach | Local, listing sites | National, targeted outreach | Global, curated process |
Source: IBBA Glossary and IBBA/M&A Source Market Pulse, 2026
If you are trying to decide which tier fits, start with a realistic value estimate. A company you believe is worth $3 million belongs with an M&A advisor, not a Main Street broker whose buyer list tops out at individual operators.
What the Certified Business Intermediary (CBI) Designation Signals
Anyone can call themselves a broker, so credentials matter when you are handing someone the sale of your largest asset. The benchmark is the Certified Business Intermediary (CBI), awarded by the International Business Brokers Association. To earn it, a member completes a minimum of 68 class hours of business brokerage coursework and demonstrates a combined minimum of three years of experience and education in the field.
IBBA is the largest nonprofit trade association for the profession, and the CBI sits at the center of its credentialing pathway, which also includes the Master CBI (MCBI) for the most experienced practitioners. For larger, lower-middle-market deals, M&A Source, founded in 1991 as a division of IBBA, awards the Mergers and Acquisitions Master Intermediary (M&AMI) designation; the organization counts more than 440 intermediaries worldwide.
A designation is not a promise of a good outcome, but it tells you the person has been trained on valuation, deal structure, and the ethics of confidential marketing rather than learning on your deal. Curious what separates the strong intermediaries from the rest? Our breakdown of how to be a successful business broker covers the day-to-day skills that matter beyond the letters after a name.
When you interview candidates, ask how many businesses in your size range and industry they have actually closed in the past two years, not how many they have listed. Volume of listings is a marketing metric; closed transactions are the only track record that predicts your result.
How an Intermediary Gets Paid: Fees and Costs Associated With a Sale
Almost all intermediaries work on a success fee, meaning the bulk of their pay comes only when your deal closes. For small to mid-sized businesses, that commission typically runs 8% to 12% of the final sale price, with 10% functioning as the most widely cited industry-standard rate. No trade association sets or surveys this number, so treat it as convention rather than a regulated benchmark.
As deals get larger, the percentage tiers down. Many advisors use the Lehman or Double Lehman formula, which charges a higher rate on the first increment of value and a lower rate on each increment above it. On a $1 million to $5 million deal, the blended rate often lands around 6% to 9%; above $5 million it can fall to 4% to 8%, and on the largest lower-middle-market transactions it drops further still.
| Deal size | Common fee model | Approximate blended rate |
|---|---|---|
| Under $1M | Flat success fee | 8% to 12% (often 10%) |
| $1M to $5M | Double Lehman tiers | 6% to 9% |
| $5M to $25M | Modified Lehman plus retainer | 4% to 8% |
| Above $25M | Retainer plus negotiated tier | 1% to 5% |
Source: Business brokerage industry fee data (East Coast Advisory Team, Raincatcher), 2026
Two other line items deserve attention. Larger M&A advisors often charge a modest monthly retainer or upfront work fee, credited against the success fee at close; this filters out unserious sellers and funds the heavy preparation a good process requires. And how much of the price arrives as cash at close varies by deal size: in the Q1 2026 Market Pulse, cash at close ranged from 79% on sub-$500K deals to 87% on $5 million to $50 million transactions, with the remainder carried through seller notes, earnouts, or escrow holdbacks.
What Happens When You Sell: Inside the Intermediary's Process
A well-run sale follows a sequence, and understanding it helps you judge whether a candidate has a real process or is improvising. Most engagements move through six phases:
- Valuation and preparation. The intermediary normalizes your financials, adds back discretionary owner expenses to establish true earnings, and sets a defensible asking price, typically as a multiple of earnings. BizBuySell's ongoing valuation data puts the all-sector average near 2.5x to 2.6x SDE, though your industry and growth rate move that materially. This is also where problems that would surface later get fixed before a buyer ever sees them.
- Marketing materials. A confidential information memorandum (CIM) and a one-page "teaser" that hides your identity get built so buyers can evaluate the opportunity without learning which company is for sale.
- Confidential outreach. Here confidentiality does real work: the intermediary approaches vetted buyers under non-disclosure agreements, so employees, customers, and competitors never learn the business is on the market until you choose to tell them.
- Buyer screening. Not every interested party can actually fund a purchase. The intermediary qualifies buyers on financial capacity and fit, then manages multiple conversations to create competitive tension.
- Negotiation and letter of intent. Offers get compared on far more than headline price. Deal structure, cash at close, transition terms, and contingencies all matter, and the intermediary runs this negotiation so you are not bargaining directly against your future partner.
- Due diligence and closing. The buyer verifies everything. The intermediary keeps the process on schedule, manages the inevitable re-trades, and assists the attorneys and accountants through to a funded close.
Getting phase one right is where most value is created or lost, because a defensible number anchors every conversation that follows. Owners who want to get ahead of the process often start with our list of 10 must-read business books for selling your business, then bring hard numbers to their first intermediary meeting. Iconic packages this entire sequence into a single managed workflow so the phases connect instead of stalling in handoffs between separate vendors.
[Download the free valuation worksheet - coming soon]
How Long It Takes and Why Some Deals Don't Close
Expect the whole thing to take six to twelve months, sometimes longer. Timelines for a business sale vary widely, and the figure surprises owners who focus on "days on market," which measures only the listing-to-offer window. In BizBuySell's Q1 2026 Insight Report, the median business took 198 days on market, up 15% from 172 days a year earlier and a reminder that pace swings quarter to quarter (the same source clocked a much faster 149-day median in Q3 2025). Add the preparation, diligence, and closing that bracket that window, and six to twelve months is the honest planning number.
Not every listing becomes a sale. Reliable sell-through data is scarce because no major association publishes it, but broker estimates commonly land between 15% and 30% of listed small businesses actually closing, with mid-sized businesses selling at higher rates. The single biggest reason deals collapse is price. Pepperdine's 2025 Private Capital Markets Report found that roughly 31% of advisor engagements ended without a completed transaction, and the leading cause was a valuation gap (about 26% of failures), ahead of unreasonable demands (14%) and no market for the business (12%).
This is the strongest argument for hiring an experienced intermediary rather than testing the market yourself. A gap of 11% to 30% between what a buyer will pay and what a seller expects sinks most failed deals, and closing that gap, with comparable data, deal structure, and disciplined negotiation, is precisely the work you are paying for. Working with an intermediary does not eliminate your workload, but it helps you navigate the parts that derail first-time sellers.
The 2026 Market Through an Intermediary's Eyes
Sentiment among intermediaries is cautiously strong heading through 2026. The Q4 2025 IBBA and M&A Source Market Pulse survey, completed by 350 business brokers and M&A advisors, found nearly three-quarters expect 2026 conditions to match (23%) or beat (49%) the 2021 market peak. On the ground, BizBuySell's Q2 2026 report counted 2,117 businesses changing hands for $1.8 billion in total value, with the average cash-flow multiple up 2% year over year to 2.7x.
One theme dominates buyer conversations right now: artificial intelligence. Yet the data says it has not moved valuations. In the Q1 2026 Market Pulse, 67% of intermediaries reported AI adoption has had no material impact on business valuations so far; 15% said it was too early to tell, 12% saw a slight increase, and only 3% a slight decrease.
"AI is definitely part of the discussion, but it hasn't translated into value yet. Buyers want to understand how it's being used, but unless it's clearly improving margins or scalability, it's not changing the outcome. Right now, fundamentals still carry the deal."
- Lisa Riley, Founder and CEO, Delta Business Advisors (IBBA/M&A Source Market Pulse Q1 2026)
For a seller, the takeaway is practical: do not expect an AI narrative to lift your price on its own, and be skeptical of any business intermediary who promises it will. Buyers still pay for durable margins, clean books, and transferable operations. A good intermediary helps you tell the AI story where it genuinely improves the numbers, and stays quiet where it does not.
How to Find and Vet a Business Intermediary
Finding the right professional comes down to matching expertise to your situation and verifying a real track record. There is no single right business broker for every owner; the right fit depends on your deal size, industry, and timeline. Work through a short checklist before you sign anything:
- Credentials. Look for a CBI, and for larger deals an M&AMI. These confirm formal training in valuation and deal structure.
- Relevant closings. Ask for the number of businesses closed in your size band and industry in the last 24 months, plus client testimonials and references you can actually call.
- Fee transparency. A trustworthy advisor explains the success fee, any retainer, and the marketing costs before you commit.
- Confidentiality process. Ask exactly how they protect your identity during outreach.
- Licensing. In roughly 17 states, business sales that include a lease or real property require the broker to hold a real estate license, so confirm they are compliant where you operate.
References and client testimonials are worth more than a slick pitch deck; a business owner who sold a company like yours will tell you in five minutes what a brochure never will. Our guide to how to find a business broker walks through where to source candidates and the questions that separate operators from order-takers.
Frequently Asked Questions
What is a business intermediary?
It is a professional who manages the sale of a company on the owner's behalf, guiding the process of buying or selling a business from valuation through closing. IBBA uses the term as an umbrella: below about $2 million the intermediary is called a business broker, and above roughly $5 million an M&A advisor or investment banker. The common thread is running a confidential, competitive process rather than simply listing the business.
How much does a business intermediary charge?
Most charge a success fee of roughly 8% to 12% of the sale price on small and mid-sized deals, with 10% cited most often as the standard. Larger transactions tier down through the Lehman or Double Lehman formula, often landing at 6% to 9% above $1 million and lower still past $5 million. Larger M&A advisors may also add a modest retainer that is credited against the final fee.
What is a Certified Business Intermediary (CBI)?
A Certified Business Intermediary is the credential awarded by the International Business Brokers Association to members who complete at least 68 class hours of coursework and show three combined years of experience and education. It signals formal training in valuation, deal structure, and ethical confidential marketing. It is not a promise of results, but it is the clearest baseline credential to screen for.
What's the difference between a business broker, an M&A advisor, and an investment banker?
They differ mainly by deal size and buyer pool. A broker handles Main Street deals under about $2 million and markets to individual buyers; an M&A advisor covers the roughly $2 million to $50 million lower middle market and runs outreach to private-equity and strategic buyers; an investment banker generally engages only above $25 million to $50 million. Fee structures and process depth scale up accordingly.
How long does it take to sell a business through an intermediary?
Plan on six to twelve months from decision to funded close. The active listing window is shorter, with BizBuySell reporting a median of 198 days on market in Q1 2026, but preparation before listing and diligence after an accepted offer add meaningful time. Deals priced realistically and prepared well tend to move toward the faster end of that range.
Choosing the Right Intermediary for Your Sale
Hiring the right business intermediary is the most consequential decision you will make in the whole sale, because it shapes your buyer pool, your price, and whether the deal closes at all. Match the professional to your deal size, insist on a CBI or M&AMI and a real closing record, and treat the fee as the price of a process that reliably outperforms going it alone.
If you are getting close to selling your business, start with the number that anchors everything else. Iconic offers a complimentary business valuation and, having guided 200+ owners through the process, can tell you which type of intermediary fits your situation before you sign a single engagement letter.
