Business broker fees and commissions in the US
Business brokers in the US are typically paid a commission at closing, not an hourly rate. Small ("Main Street") deals commonly use a flat 10-12% commission with a minimum dollar fee; larger lower-middle-market deals typically use a sliding "Double Lehman" scale plus a retainer. None of these numbers are set by law — get the actual terms in writing before you sign a listing agreement.
By the bizflip team · Published 29 August 2026 · Facts checked 29 August 2026 · Sources listed below
Business brokers in the US are almost always paid on success: a percentage of the sale price, due at closing, not an hourly rate. Small ("Main Street") deals commonly use a flat commission around 10-12%. Larger lower-middle-market deals more often use a sliding scale, plus a retainer paid during the engagement. None of this is set by law — every number here is industry convention, and the actual rate is whatever you and the broker agree to in a written listing agreement.
How commission is usually structured
There is no government body that sets business broker commission rates. The fee is a private contract term, negotiated between the seller and the broker and written into a listing (or engagement) agreement. That agreement should state the percentage, any minimum dollar fee, what counts as a "sale" for payment purposes, and how long the obligation lasts after the listing ends (a "tail" clause covering buyers the broker introduced).
The industry generally splits deals into two size bands. The International Business Brokers Association (IBBA) and M&A Source define "Main Street" as businesses valued up to about $2 million, and "lower middle market" as roughly $2 million to $50 million. Fee structure differs sharply between the two.
Main Street deals: the 10-12% convention
For businesses selling under roughly $1-2 million, published fee surveys converge on a flat commission of 8% to 12% of the sale price, with 10% cited most often as the baseline and 12% common at the smaller end. The rate tends to run higher, not lower, on smaller transactions — a $300,000 sale takes nearly as much broker time to market, screen, and close as a $1 million one, so the percentage rises to cover that fixed cost.
- Deals under about $500,000: often 10-12%, sometimes more once a minimum fee is applied.
- Deals from roughly $500,000 to $2 million: typically 8-10%.
- The exact figure is negotiable and varies by industry, location, and how much marketing the deal needs.
Minimum fees: why the quoted percentage isn't the whole story
Most brokers set a minimum dollar fee that applies regardless of the percentage math — commonly in the $10,000 to $25,000 range. On a small deal, that minimum can push the effective rate well above the quoted percentage. A 10% commission on a $150,000 sale is $15,000; if the broker's minimum is $20,000, that's what you owe, an effective rate closer to 13%. Ask for the specific dollar minimum in writing before signing, not just the headline percentage.
Larger deals: the Lehman and Double Lehman scales
The original "Lehman formula," dating to Lehman Brothers in the 1960s, is a tiered success fee: 5% of the first $1 million of the sale price, 4% of the second, 3% of the third, 2% of the fourth, and 1% of everything above $4 million. Those numbers were never adjusted for inflation, so the classic scale now under-pays for the work involved in most deals.
In response, brokers and M&A advisors working the lower middle market largely use the "Double Lehman" scale instead — the same tiers, doubled: 10% of the first $1 million, 8% of the second, 6% of the third, 4% of the fourth, and 2% of everything above $4 million. It has become the de facto standard reference point for sliding-scale success fees on deals roughly $2 million to $50 million, though many advisors modify the tiers further for a given deal.
| Price tier | Double Lehman rate | Fee on that tier |
|---|---|---|
| First $1,000,000 | 10% | $100,000 |
| Second $1,000,000 | 8% | $80,000 |
| Third $1,000,000 | 6% | $60,000 |
| Fourth $1,000,000 | 4% | $40,000 |
| Remaining $6,000,000 (on a $10M deal) | 2% | $120,000 |
On a $10 million sale, that tiered math totals $400,000 — a blended rate of 4.0%, well below the flat Main Street convention, which is the point: as deal size grows, a flat percentage would hand the broker an outsized fee for largely the same closing work.
Retainers and upfront fees on larger deals
Most Main Street business brokers work purely on contingency — no sale, no fee, aside from a modest marketing charge in some cases. Lower-middle-market engagements more often include money paid before closing:
- A monthly retainer, commonly $2,500 to $25,000 depending on deal size and advisor, paid for the length of the engagement.
- A one-time work fee, often $25,000 to $100,000, covering preparation of the confidential information memorandum, financial model, and buyer target list.
The term to check for is "creditable." A creditable retainer or work fee is subtracted from the success fee at closing, so it functions as a deposit. A non-creditable fee is kept by the advisor regardless of outcome, on top of the success fee. This single word in the engagement letter can be worth tens of thousands of dollars — read it before signing, and ask directly if it isn't stated.
Co-broking: when the buyer has their own broker
Sometimes a buyer arrives already represented by their own business broker. When that happens, the seller's listing broker may agree to split the commission with the buyer's ("cooperating") broker rather than charge the seller twice — a common split is 50/50, though terms vary by agreement. Unlike residential real estate, business brokerage has no universal system that requires cooperation between brokers, and many business brokers choose not to co-broke at all, citing confidentiality concerns or simply preferring to control both sides of the deal. If you want your listing broker to work with outside buyer-side brokers, confirm that in writing up front, since it can widen the pool of buyers who see the deal.
What actually moves your fee
Within these conventions, the number you're quoted depends on deal size, how much marketing and buyer-screening the sale needs, the industry, how complicated the financials are, and how much competition there is for the listing in your area. Fees are negotiable, and it's normal to compare terms from more than one broker before signing an exclusive listing agreement. Because the outcome depends on your specific business and tax situation, confirm the after-fee, after-tax proceeds picture with your accountant or attorney before you sign anything.
None of the figures above are quotes — they're the ranges the industry itself publishes. Get the actual percentage, minimum fee, retainer terms, and tail period in writing before you sign, and don't be afraid to ask a broker to walk through the math on your specific sale price.
Sources
Every load-bearing claim in this guide, and where it comes from:
- IBBA/M&A Source define Main Street as businesses valued up to about $2 million and lower middle market as roughly $2 million to $50 million. — IBBA / M&A Source (Market Pulse Survey Q1 2026, PR Newswire)
- Main Street business broker commissions are typically 8% to 12% of sale price under about $1-2 million, with lower middle market deals using a tiered 4-8% structure instead of a flat rate. — CT Acquisitions
- Business broker commission ranges by deal size and typical minimum fees of roughly $10,000 to $25,000. — Rejigg
- Minimum broker fees can push the effective commission rate well above the quoted percentage on small deals. — CPI Inflation Calculator
- The classic Lehman formula (5-4-3-2-1 percent tiers by $1M) and the Double Lehman scale (10-8-6-4-2 percent tiers) used as the standard sliding-scale reference for M&A success fees. — MidStreet
- Lower-middle-market M&A advisor monthly retainers, one-time work-product fees, and the 'creditable' vs non-creditable distinction against the success fee at closing. — CT Acquisitions
- Co-brokering commission splits between a seller's listing broker and a buyer's cooperating broker, commonly split 50/50 by agreement, and that participation is not universal among business brokers. — Business Brokerage Press
- SBA guidance on selling a business recommends working with a lawyer, accountant, and valuation professional as part of the sale process. — U.S. Small Business Administration (SBA)
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