Buy or Sell A Business
Business owner calculating broker commission

Most U.S. small-business sellers should budget for a broker success fee in the range commonly seen for main-street deals, with the exact percentage shifting based on fee structure, minimum floors, and add-on costs. Larger deals pay lower percentages but higher dollar minimums. The structure quoted, flat percent, Lehman, or a variant, matters as much as the headline rate.

TL;DR:

  • Small-business deals under $250,000 typically have a 10-12% commission with minimum fees between $10,000 and $25,000, which can increase the effective rate.
  • Tiered commission models like the Lehman Formula are common for deals over $1 million, often reducing the percentage as deal size grows, especially above $5 million.
  • Success fees usually cover valuation, marketing, buyer outreach, negotiations, and due diligence, but additional expenses like travel and marketing are billed separately and can add thousands.
  • The seller generally pays the broker from proceeds, with co-brokering and dual agency arrangements influencing fee splits and potential conflicts; ask brokers how they handle buyer-paid advisors.
  • Before signing, sellers should obtain sample contracts, confirm fee credits and expense caps in writing, and compare multiple quotes to ensure transparency and optimize net proceeds.

Table of Contents

Business Broker Commission by Deal Size

The percentage a broker charges moves in the opposite direction of deal size, and the reason is simple: selling a $300,000 landscaping company takes nearly as much legwork as selling a $2 million one. Buyer outreach, financial packaging, negotiation, and closing coordination don’t scale down much just because the price tag does. That fixed workload is why smaller deals carry higher effective commission rates even when everyone agrees the seller is getting less money.

Here’s how commissions typically break down by transaction size in the U.S. market:

  • Under $250,000: Commission often runs 10% to 12%, but a minimum fee of $10,000 to $25,000 usually applies, which can push the effective rate well above the quoted percentage.
  • $250,000 to $1 million: Commissions generally land between 8% and 10%, and minimum fee floors still matter at the lower end of this band.
  • $1 million to $5 million: Tiered structures like Double Lehman become common, with blended rates typically settling between 6% and 10%.
  • $5 million to $25 million: In lower-middle-market deals, retainers become standard, and success fees generally trend lower on a blended basis.
  • $25 million and above: For very large deals, rates tend to be lower, often with heavier reliance on retainers, milestone payments, and negotiated minimums.

Three quick examples show why the “typical range” can be misleading without context.

A $150,000 sale at a quoted 10% commission produces a $15,000 fee on paper. But if the broker’s minimum is $18,000, the seller pays $18,000 anyway.

A $500,000 sale at 10% comes to $50,000. Most minimums sit well below that number, so the quoted rate and the effective rate usually match here.

Minimum fees materially change the math on small deals. Main-street brokers commonly set floors between $10,000 and $25,000, and lower-middle-market advisors set them considerably higher. If your business is worth less than roughly $200,000, ask upfront what the minimum is. It often matters more than the percentage.

Flat Percentage, Lehman, Double Lehman, and Modified Lehman Explained

Every business broker fee structure in the U.S. traces back to one of a handful of models. Understanding the mechanics lets you compare quotes apples to apples instead of getting swayed by whichever number sounds smallest.

Flat percentage is the simplest structure and the most common one under $5 million. It’s easy to calculate and easy to compare across brokers, but it doesn’t reward deal size the way tiered structures do.

The Lehman Formula is the original tiered model, built decades ago by Lehman Brothers for larger corporate transactions. The classic version charges:

  1. 5% on the first $1 million of transaction value
  2. 4% on the second $1 million
  3. 3% on the third $1 million
  4. 2% on the fourth $1 million
  5. 1% on everything above $4 million

Almost nobody uses the original tiers anymore. The percentages were set decades ago and no longer reflect the time and risk brokers take on for deals in the $1 million to $10 million range, so the market adjusted.

This has become the de facto standard for many small-to-lower-middle-market engagements, because it compensates brokers fairly for months of work without punishing sellers on the low end of a deal’s value.

Modified Lehman is where brokers customize the tiers to fit a specific deal. There’s no single formula. Every advisor structures it slightly differently, which is exactly why you need to see the actual numbers in writing before signing anything.

Retainers show up more often as deal size increases. A monthly retainer of $5,000 to $15,000 is typical for main-street engagements that use one, while lower-middle-market retainers commonly run $10,000 to $50,000 per month. The critical question isn’t the retainer amount. It’s whether that money gets credited against the final success fee at closing or disappears as a separate cost. Ask for “creditable” in writing.

Sellers at smaller deal sizes tend to do better with a flat percentage or Double Lehman, since flat structures under $5 million produce fairly predictable outcomes, but comparing them against a tiered quote often reveals a better deal. Sellers above $5 million almost always benefit from tiered structures, because a flat rate at that size becomes disproportionately expensive.

Flat Percentage, Lehman, Double Lehman, and Modified Lehman Explained — overview diagram

What the Success Fee Covers, and What Costs Extra

A business broker fee isn’t just a number attached to a closing date. It’s payment for a specific bundle of work, and knowing what’s included helps you spot when a broker is quietly charging twice for the same service.

The success fee generally covers:

  • A formal business valuation and pricing strategy
  • Preparation of a confidential information memorandum (CIM) and marketing materials
  • Confidential buyer outreach and qualification of prospects
  • Negotiation of offer terms and letter of intent
  • Coordination through due diligence and closing

What it usually doesn’t cover are ancillary expenses that show up separately on the invoice. Data room hosting, travel to meet buyers, third-party valuation opinions, and paid marketing placements are commonly billed on top of the success fee, and sellers frequently underestimate how much these add up.

Pro Tip: Ask for a written expense policy before signing anything, not a verbal promise. Get a dollar cap in the engagement letter, request pre-approval for any single expense over $500, and ask for monthly itemized statements rather than one lump bill at closing.

Without a cap, a data room subscription, a few flights to meet out-of-state buyers, and a third-party valuation report can add several thousand dollars to a deal that already carries a five-figure success fee. None of that is unreasonable on its own. The problem is when it arrives as a surprise instead of a line item you agreed to in advance.

Who Actually Pays the Broker: Splits and Dual Agency

In the vast majority of U.S. small business sales, the seller pays the broker. The listing broker represents the seller and takes their fee out of the seller’s proceeds at closing, which means the commission comes off the top before you see a dollar.

Co-brokering complicates that simple picture. When a buyer works with their own broker, the two brokers often split the commission, commonly 50/50, though the exact split is negotiated deal by deal. The seller’s total cost usually doesn’t change. What changes is how that fee gets divided between the two professionals working the transaction.

Some situations get murkier:

  • Buyer-paid advisors: Sophisticated buyers, especially private equity groups or serial acquirers, sometimes hire their own advisors and pay them directly, independent of whatever the seller owes their broker.
  • Dual agency: A single broker represents both the buyer and seller in the same deal. This is legal in most states but creates an inherent conflict, since the broker now has an incentive to close the deal rather than negotiate hard for either side.
  • Undisclosed splits: Some listing agreements don’t specify how a co-broker fee gets divided, which can create tension mid-deal if a buyer’s broker shows up unexpectedly.

If your broker proposes dual agency, ask directly how they’ll handle price negotiation when both parties are technically their clients. A broker who can’t answer that clearly, or who brushes off the question, is a signal to keep your eyes open through the rest of the process. Understanding how brokers source buyers off-market also clarifies why co-broker arrangements happen in the first place: a broader buyer pool often means a broker outside your immediate network brought the deal.

How to Negotiate Your Broker’s Commission Terms

Most sellers focus on the headline percentage and miss the terms that actually move the needle on net proceeds. Here’s the order to prioritize when reviewing an engagement letter.

  1. Retainer credit. If you’re paying a monthly retainer, confirm in writing that it’s credited dollar-for-dollar against the success fee at closing, not treated as a separate, non-refundable cost.
  2. Minimum fee floor. Ask what the minimum is and negotiate it down if your business is on the smaller end of the broker’s typical range. A $25,000 floor on a $200,000 sale is worth fighting over.
  3. Expense caps. Request a hard dollar limit on reimbursable expenses, with pre-approval required above a set threshold.
  4. Tail clause scope. A tail clause pays the broker if you sell to a buyer they introduced, even after the engagement ends. Insist it only applies to buyers on a written, dated introduction list, not to anyone who ever heard about your business.
  5. Fee base. Confirm whether the commission calculates against gross sale price, enterprise value, or net proceeds. These can produce meaningfully different dollar outcomes on the same deal.

Ask your broker directly: “What happens if I get an unsolicited offer during the engagement?” and “Can you show me an example of a past engagement letter with the names redacted?” A broker who won’t show you a sample contract structure before you sign is asking you to buy blind.

Pro Tip: Get at least two competing engagement letters before you sign anything. Comparing real contract language side by side reveals more about a broker’s fairness than any sales conversation will.

Red flags worth walking away from: a tail clause with no end date, a retainer described as “earned” rather than “creditable,” or a broker who refuses to put the minimum fee in writing before you sign.

Broker Fee Math: Four Deal Sizes Compared

Numbers make this concrete faster than percentages alone. Here’s how four common U.S. deal sizes play out under different structures. These are illustrative calculations based on standard formula mechanics, not quotes from any specific broker.

The pattern holds across every row: flat percentage costs more as deal size grows, while tiered structures reward sellers for larger transactions. On the $150,000 deal, notice the opposite effect. The minimum floor overrides the percentage entirely, which is exactly why minimum fees deserve as much negotiation attention as the headline rate.

If you want to run your own numbers, the inputs that matter are sale price, quoted percentage or tier structure, minimum fee floor, and whether a retainer is creditable. Plug those four into any basic spreadsheet before you sign, and you’ll know your real cost within a few hundred dollars. A business valuation gives you the sale price input you need to run this math accurately in the first place.

How Broker Fees Affect Your Taxes

The IRS treats business broker fees differently depending on what’s actually being sold, and getting this wrong can cost you real money at tax time. Success-based fees paid to sell business assets or equity are generally treated as costs of the sale, which reduces your taxable gain rather than counting as an ordinary deductible expense.

Whether a fee gets capitalized (added to the cost basis or subtracted from proceeds) or deducted currently depends on the nature of the transaction and what the fee is tied to. This isn’t a place to guess.

  • Success fees tied directly to closing a sale typically reduce the amount realized, lowering your capital gain.
  • Fees for services unrelated to the sale itself, such as general business consulting, may be treated differently.
  • The allocation between asset classes in an asset sale (equipment, goodwill, inventory) affects how fees get allocated too.
  • Documentation matters: keep the engagement letter, invoices, and a clear breakdown of what each payment covered.

Confirm your specific treatment with a CPA before closing, not after. The safe-harbor guidance the IRS has issued around success-based fees in business acquisitions gives some structure here, but applying it correctly depends on your deal’s specifics. Estimate your after-tax proceeds using your accountant’s guidance, not a rule of thumb from a blog post, before you accept any offer.

What 225+ Deals Taught Captyx About Fee Transparency

Fee structures look clean on paper. In practice, they get messy the moment a retainer isn’t credited the way a seller expected, or an expense line item shows up that nobody flagged in advance. Having built the systems and formulas that many business brokers now use, and having closed more than 225 business sales, Captyx has seen where these fee structures break down for sellers, and where they work well.

The pattern is consistent: sellers who negotiate the terms around the fee, not just the percentage, end up with better net outcomes than sellers who fixate on shaving a point or two off the headline rate.

Captyx structures engagement terms so retainers apply directly against the final success fee, tail clauses cover only buyers on a documented introduction list, and expense reimbursement follows a written cap agreed to before any bill arrives. None of that is unusual advice. It’s unusual to see it followed consistently, which is often the actual gap between a smooth closing and a seller who feels blind sided by their own contract.

For sellers preparing to go to market, the recommendation is straightforward: get your valuation done first, know your realistic sale price range, and only then evaluate commission quotes against that number. The fee structure matters less than whether your business is actually positioned to sell for what it’s worth.

Three Moves to Make Before You Sign Anything

Get a real valuation before you talk fee structure with anyone.

Request sample engagement letters from at least two brokers, redacted names are fine, and compare the retainer credit language, tail clause scope, and expense cap side by side. The differences between two brokers’ actual contract terms are usually bigger than the difference in their quoted percentages.

Interview two or three advisors using the checklist above before committing to one. The fee is the cost of getting a higher, cleaner sale price. It’s not the thing to minimize at all costs. Judge every quote by what it does to your net proceeds, not by which number sounds smallest on a phone call.

— Tucker

Get a Clear Fee Quote Before You Commit

Captyx approaches commission the way this article just walked through: retainers credited dollar-for-dollar at closing, tail clauses limited to documented buyer introductions, and expense caps agreed to in writing before a single invoice arrives. That’s the standard sellers should expect from any advisor, and it’s the standard Captyx builds into every engagement letter from the start.

Captyx

With more than 225 completed business sales behind the systems Captyx uses, sellers get fee transparency backed by actual transaction history, not a template pulled from a generic guide. If you’re trying to figure out what your business might sell for and how commission structure would apply to your specific numbers, request a free business valuation and get a real starting point before you sign anything with anyone.

This article is general information, not a substitute for advice from a qualified financial advisor. Consult a qualified financial professional about your own circumstances before acting on anything here.

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