How Much Do Business Brokers Charge? Broker Fee Calculator

How the Modern Lehman Formula Works

The Modern Lehman Formula is an 8-tier commission structure used by business brokers and investment bankers. The percentage decreases as the sale price increases, so larger deals pay a lower average rate while still compensating the broker for their work.

Example: On a $15 million sale, the commission totals $730,000 — an average of 4.9%. On a $1 million sale it's a flat $100,000, or 10%.

What You're Actually Paying For

A broker commission is not just a finder's fee. When you sign a broker agreement you're paying for business valuation, preparation of a confidential information memorandum (CIM), buyer outreach and marketing, buyer qualification, deal structuring, negotiation support, and transaction management through closing.

For complex businesses or sellers with no M&A experience, this bundle of services can be worth the cost. For straightforward businesses under $2 million, it often is not — especially now that for-sale-by-owner platforms, listing marketplaces, and large buyer communities have closed the information gap that used to justify broker fees.

The 4 Main Broker Fee Structures

Not all broker agreements are structured the same way. Understanding the differences before you sign protects you from expensive surprises.

1. Flat Percentage Commission

The simplest structure — a fixed percentage of the final sale price, most commonly 10% for businesses under $1 million. No sliding scale, no tiers. Standard at the lower end of the market.

2. Tiered Commission (Modern Lehman Formula)

The most common structure for deals above $1 million. A higher percentage applies to the first tranche, with each subsequent million taxed at a lower rate. The Modern Lehman scale (10-9-8-7-6-5-4-3%) is the current industry standard, replacing the original Lehman Formula (5-4-3-2-1%) developed in the 1970s. Some firms use Double Lehman (10-8-6-4-2%) — always ask which formula applies.

3. Retainer + Success Fee

Common for mid-market transactions. The broker charges an upfront retainer ($5,000–$25,000) plus a success fee at closing. The retainer compensates the broker for upfront work regardless of whether the deal closes. Retainers are typically non-refundable — confirm whether yours is credited against the final commission.

4. Monthly Marketing Fee + Commission

Some brokers for larger businesses ($4M–$20M+) charge a monthly marketing fee of $4,000–$20,000 for ongoing buyer outreach and deal management. This may or may not be deductible from the final commission — always clarify in writing.

Hidden Costs to Watch For

Minimum Fee Clauses

Most brokers set a minimum commission of $10,000–$50,000 regardless of the final sale price. If your business sells for $200,000 at 10%, you'd expect to pay $20,000 — but if the minimum is $25,000, you pay the higher amount. Always confirm the minimum before signing.

Tail Clauses (Holdover Periods)

A tail clause means the broker is owed a commission even after the agreement ends, if the buyer was introduced during the active listing period. Tail periods of 12–24 months are common — this can mean you terminate a broker, find a buyer yourself, and still owe the original broker a full commission.

Expense Reimbursement

Some agreements require the seller to reimburse marketing expenses — photography, advertising, travel — regardless of whether the deal closes. These can add $1,000–$10,000. Always confirm whether expenses are included in the commission or billed separately.

Exclusivity Clauses

Most broker agreements include an exclusivity period of 6–12 months during which you cannot sell the business without using the broker, even if you find the buyer yourself. If you already have a prospect in mind, carve them out of the agreement by name before signing.

When a Broker Is Worth It — and When It Isn't

A broker adds clear value when:

• Your business is complex — multiple locations, significant IP, regulatory licensing
• You need confidentiality and can't publicly market without risking staff or customer attrition
• You have no prior M&A experience and are unfamiliar with deal structuring or earn-outs
• Your business is in a niche industry with a small pool of qualified buyers
• The deal size is above $5 million, where complexity justifies professional representation

A broker is often not worth the cost when:

• Your business is straightforward with clean financials and transferable customer relationships
• The sale price is under $2 million, where the commission is a very large share of net proceeds
• You're comfortable managing buyer inquiries and have time to do it
• The business is in a popular category (restaurants, service businesses, retail) with broad buyer demand
• You already have a likely buyer — a competitor, employee, or family member

How to Negotiate Broker Fees

Get multiple proposals. Talk to at least 2–3 brokers before signing anything. Knowing what the market offers gives you leverage.

Negotiate the tiers, not just the headline rate. Pushing the top tier from 10% to 8% on the first million saves $20,000 on a $1M deal.

Cap the total commission. For large deals, propose a commission cap — for example, no more than $300,000 regardless of final sale price. Many brokers will accept this because the work doesn't scale proportionally with deal size.

Push for a creditable retainer. If the broker insists on a retainer, push for it to be fully credited against the final commission at closing. This aligns incentives — the broker only profits if the deal closes.

Shorten the tail. Propose a 6-month exclusivity window with a 6-month tail rather than the standard 12+12.

Broker Fees vs. For-Sale-By-Owner

*Broker fees calculated using Modern Lehman Formula. Does not include additional retainers ($5K–$15K) or marketing fees ($1K–$5K) brokers typically charge on top.

Frequently Asked Questions