TL;DR: Business broker fees run 8-12% on deals under $1M and 6-10% blended on lower-middle-market deals between $1M and $5M. Brokers are paid by the seller. But as a buyer, you need to understand how those fees shape seller behavior, deal timing, and the offers that actually reach your desk.
According to the International Business Brokers Association (IBBA), retirement is the top reason business owners enter the market across all deal sizes. That is the seller you want. The motivated, ready-to-move-on founder who built something real and wants a clean exit. The broker sitting between you and that founder is running a fee structure you should understand before you shake hands on a letter of intent.
This is not about gaming the broker. It is about knowing the incentive structure in the room so you can read the deal correctly.
Who pays the broker
The seller pays. Almost always. Business brokers work on a success fee tied to the sale price, paid at closing. The buyer writes the purchase price check. Out of that, the seller pays broker fees, taxes, and transition costs. Net proceeds are what the seller actually keeps.
That matters because the broker's incentive is to maximize the sale price and close the deal. Their fee evaporates if the transaction falls apart. A broker who has spent six months working a deal and found a qualified buyer is not going to blow it over a minor purchase price adjustment. You have more negotiating room than you might think once you understand that dynamic.
A small minority of franchise brokers and buyer-side representatives collect a fee from the buyer as well, typically 1-3% of transaction value. This is a real conflict of interest. If the broker you are working with as a buyer is also paid by the seller, their loyalty is split. Get that in writing and price it into your expectations.
How broker fees are structured
The fee structure depends almost entirely on deal size.
Main Street deals under $1M. Flat commission, typically 8-12% of the final sale price. Minimum success fee floors apply. Most Main Street brokers will not take a deal if the minimum commission does not pencil out to at least $10,000-$25,000. That floor changes the math on sub-$250K businesses materially. A business selling at $200,000 with a $20,000 minimum floor is paying an effective rate of 10%. The same broker charging 10% with no floor on a $200,000 deal also collects $20,000. But on a $100,000 business, that floor produces an effective rate of 20%.
Lower-middle-market deals from $1M to $5M. Most brokers in this range use the Double Lehman formula. The commission steps down as deal size increases. The structure looks like this:
- 10% on the first $1M of transaction value
- 8% on the second $1M
- 6% on the third $1M
- 4% on the fourth $1M
- 2% on everything above $4M
On a $3M deal, Double Lehman produces $240,000 in broker fees, a blended rate of 8%. On a $5M deal, the blended rate compresses to roughly 7.2%. The formula front-loads compensation to cover the broker's fixed cost of running a deal process.
The original Lehman formula (5-4-3-2-1) is now considered too low for most lower-middle-market work. When a broker says they use "the Lehman formula" without specifying, ask them to write out the exact percentages. There are enough variations that the label is almost meaningless without the numbers.
Retainers are increasingly common in this size range. Per the Axial 2026 M&A Fee Guide, 71% of lower-middle-market advisors charge some form of upfront engagement fee. Most are credited against the success fee at closing. A broker charging a $10,000-$25,000 monthly retainer for six months who credits it against the closing commission is not extracting extra money. They are just getting paid earlier for work they would do anyway. Retainers without crediting provisions are worth scrutinizing.
Deals above $5M. M&A advisory firms, not Main Street brokers, handle these. The fee structure shifts to Modified Lehman or custom arrangements with blended rates of 3-5%. Retainers run $15,000-$50,000 per month and are almost always credited. By the time you are looking at $10M-plus deals, the broker fee compresses further, often to 2-3% blended.
What the fee structure tells you about deal dynamics
This is where it matters for ETA operators and acquisition entrepreneurs.
A seller paying 10% in broker fees on a $2M business has already given up $200,000 before taxes. That is a real number. It changes what price they need to make the exit worthwhile. If the seller's walk-away number is $1.8M net, and the broker is taking $200,000 at a 10% commission, the seller needs to gross $2M at minimum. Every dollar you negotiate below $2M is coming entirely out of the seller's net proceeds. That is why purchase price concessions are harder to get on brokered deals than off-market deals.
Brokered deals also run more formal processes. The broker typically runs a Confidential Information Memorandum, manages a buyer outreach list, and may run a limited auction with two to four qualified buyers. That process is designed to create competition. You will not be the only person looking. That is fine. Knowing the process helps you move at the right speed without overpaying to win a competitive situation.
Off-market deals sourced through proprietary outreach are different. When there is no broker, the seller's net proceeds are higher at any given purchase price. That is real value to them. A $1.7M proprietary deal can be more attractive to a seller than a $2M brokered deal if the seller keeps $200,000 more and avoids a six-month broker process. If your acquisition strategy includes building proprietary deal flow, understanding why sellers choose to avoid brokers is part of the edge.
What to negotiate on broker deals
As a buyer, you are not negotiating broker fees directly. That is between the seller and the broker. But understanding the fee structure helps you evaluate seller motivation and price sensitivity.
If a seller has been on market for 12 months with a broker, the broker has been carrying a retainer or contingency cost the whole time. The seller has dealt with LOI process, dead deals, and the carrying cost of having their business for sale. Both parties are ready to close. That is negotiating position.
Tail clause provisions matter if you find a business through a broker but the deal does not close, then you later approach the seller directly. Most broker engagement agreements contain a tail clause of 12-24 months that still obligates the seller to pay the commission if the buyer introduced by the broker completes a transaction. Know whether this applies before you re-approach a seller you met through a broker.
The expense pass-throughs in broker engagement letters are worth reviewing too. Travel, due diligence coordination, data room hosting, and marketing reimbursements are real costs that reduce seller net proceeds. None of it shows up in the headline commission rate.
How to evaluate whether the broker adds value
Research consistently shows that brokered business sales close at 15-25% higher prices than unrepresented sales. That premium more than covers the commission on most deals. The broker adds value through competitive process management, proper valuation, buyer qualification, and deal structure negotiation.
Per the Axial 2024-2025 M&A Fee Guide, the factors advisors weight most heavily when setting fees are deal complexity, transaction risk, and deal size. Not relationship or competition. That tells you the fee is a function of the work, not a number pulled from thin air.
The right question is not whether the broker's 9% fee is high. The right question is whether the broker delivered a buyer at the right price, on a reasonable timeline, with a deal that actually closed. Per the IBBA, advisors with ongoing education and accreditation achieve closing ratios of roughly 50%. The general market closes about 25-30% of listed businesses. That gap represents real value for the seller, and real availability of quality businesses for prepared buyers.
The bottom line for buyers
Business broker fees are the seller's problem. But they shape the deals that reach your desk. A well-run brokered process produces a motivated seller, a documented business, qualified buyers, and a structured path to close. That has value even if you pay market price.
Where buyers get hurt is when they confuse a high-quality brokered deal for an overpriced one because they see the broker's commission as friction. The commission is already baked into the seller's expectations. The deal you close at $2M is not worse than the off-market deal you close at $1.7M if the $2M business is worth $2M.
Know the fee structure. Know who the broker is working for. And know that the best deals are the ones that actually close.
Frequently Asked Questions
Who pays the business broker fee when buying a business?
The seller pays the business broker fee in almost all cases. The commission is deducted from the seller's gross proceeds at closing. Buyers do not pay a broker fee directly unless they have engaged a separate buyer-side advisor, which is uncommon in lower-middle-market deals under $5M.
What is the typical business broker commission on a $2M deal?
A $2M deal using the Double Lehman formula produces a commission of $180,000 (10% on the first $1M plus 8% on the second $1M), a blended rate of 9%. Flat-commission brokers may charge 8-10% on deals in this range. Most lower-middle-market brokers also charge a minimum success fee floor of $50,000-$100,000 regardless of the formula calculation.
What is the Double Lehman formula for business broker fees?
The Double Lehman formula charges 10% on the first $1M of transaction value, 8% on the second $1M, 6% on the third, 4% on the fourth, and 2% on everything above $4M. It is the standard success fee structure for lower-middle-market business sales between $1M and $5M.
Do business broker fees affect the purchase price I pay?
Not directly. Broker fees reduce the seller's net proceeds, which affects what purchase price the seller needs to achieve their target payout. Sellers on brokered deals typically price in the commission cost, which is why brokered deals often carry higher asking prices than comparable off-market opportunities. Understanding the seller's cost structure helps buyers assess true price flexibility.
