Hiring a business broker can unlock deals you'd never find alone — but before you sign anything, you need to understand exactly what you're paying for. Business broker commission costs vary widely depending on deal size, structure, and the broker's model. Getting this wrong can cost you tens of thousands of dollars.
How Business Broker Commissions Are Typically Structured
Most brokers work on a success fee basis, meaning they only get paid when the deal closes. This aligns their incentives with yours, but the percentage itself can sting if you're not prepared.
The two most common pricing models are:
- Flat percentage: A fixed commission rate applied to the final sale price, typically between 8% and 12% for small businesses (under $1M) and 3% to 6% for mid-market deals ($1M–$50M).
- The Lehman Formula: A sliding scale originally developed for investment banking. It charges 5% on the first $1M, 4% on the second $1M, 3% on the third, 2% on the fourth, and 1% on everything above $5M.
- Double Lehman (or Modern Lehman): Common today, this doubles those percentages — 10% on the first $1M, 8% on the second, and so on.
- Minimum fee clauses: Many brokers set a floor, often $10,000–$25,000, regardless of final sale price.
What Affects the Commission Rate?
Not every deal is priced the same, and brokers factor in several variables when quoting their fees.
Deal size is the biggest driver. Smaller transactions demand more hands-on work relative to the price, so brokers charge higher percentages. A $300,000 business sale might carry a 10–12% fee, while a $10M transaction typically falls in the 3–5% range.
Industry complexity also plays a role. Businesses in niche industries — healthcare, manufacturing with specialized equipment, or heavily regulated sectors — require more due diligence and industry knowledge, which brokers price accordingly.
Exclusivity agreements matter too. If you sign an exclusive listing agreement (which most reputable brokers require), the broker is fully committed to your deal. These agreements typically run 6–12 months and may include marketing fees paid upfront.
Upfront Fees and Retainers: What's Normal?
Some brokers, particularly M&A advisors handling mid-market transactions, charge a monthly retainer ranging from $2,000 to $10,000 per month while the engagement is active. This is often credited against the final success fee at closing.
Others charge a valuation or engagement fee upfront — typically $1,500 to $5,000 — to cover the work of preparing a Confidential Information Memorandum (CIM) and conducting a formal business valuation.
Be cautious of any broker demanding large upfront payments without a clear deliverable. Legitimate brokers earn the bulk of their compensation at the closing table.
M&A Advisors vs. Business Brokers: Does the Pricing Differ?
Yes — and the distinction matters.
Business brokers typically handle deals under $5M. They often work on straight commission with minimal or no retainer, and many operate independently or through small regional firms.
M&A advisors (or investment bankers at the lower end of the market) handle deals from $5M to $250M+. Their fee structures are more sophisticated, almost always include a retainer, and use modified Lehman or Double Lehman formulas.
If your deal falls in the $2M–$10M range, you're in a gray zone where either type of professional could serve you — which is exactly why comparing providers is so important.
How to Evaluate Whether a Commission is Fair
Before agreeing to any fee structure, ask these questions:
- What specific services are included — valuation, CIM preparation, buyer outreach, negotiation support?
- How many qualified buyers will be contacted, and through which channels?
- What's your track record closing deals of this size in this industry?
- Is your success fee based on total enterprise value, or just equity proceeds?
- Are there any additional fees at closing (e.g., administrative, escrow coordination)?
A broker charging 10% with deep industry contacts and a proven process may deliver more value than one charging 6% with a thin buyer network.
Comparing Brokers Before You Commit
Shopping around isn't just smart — it's essential. Fee structures, experience levels, and specializations differ dramatically between providers, and the wrong choice can drag out your timeline or kill a deal entirely.
Mercoly makes it easy to compare and find trusted Business Brokers & M&A Advisory providers in one place, so you can evaluate credentials, fee transparency, and industry focus before signing any engagement letter.
Start comparing business brokers today to find the right partner at the right price for your deal.