Every fee below read from the firm directly, September 2026

Buy Side Advisor Fees: What a Buy Side M&A Advisor and a Business Acquisition Consultant Cost

A buy side M&A advisor charges you in two places at once. A monthly retainer runs while the search is live, published between $5,000 and $100,000 a month depending on which firm you read, and a success fee lands when a deal closes, quoted at 0.5% to 2% of transaction value almost everywhere you look. Retainers are usually credited against that success fee.

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The number that actually decides your search is neither of those. It is the minimum success fee. Praxis Rock states it plainly at $35,000 to $50,000, and spells out the consequence: an advisor charging 2% will not pursue a deal below roughly $2.5 million of enterprise value. Below that line the problem is not that you cannot afford an advisor. It is that the advisor declines the mandate.

Every figure on this page was read from the firm's own article on 15 September 2026, with the author and date attached to each row. Where our arithmetic extends a published scale rather than quoting it, we say so.

The minimum success fee, not the percentage, decides whether you can hire a buy side advisor at all: at $35,000 to $50,000 it prices out every deal below roughly $2.5 million.

Read from each firm directly on 15 September 2026

What each firm publishes about buy side advisor fees

Each row came from that firm's own article, not from a roundup, and carries the author and date the firm put on it. "Not published" means the firm discusses the fee without stating a figure. The scales disagree with each other, which is the most useful thing on this page, and the pillars below explain why.

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Source	Monthly retainer	Success fee	Minimum fee	Side it describes
Praxis Rock, Jeff Baehr, March 2026	$10,000 to $50,000	0.5% to 2%	$35,000 to $50,000	Buy side
DealRoom, updated 15 July 2026	$25,000 to $100,000	0.5% to 2%	Not published	Buy side
Salt Creek Advisory, Jack Pitts, 17 August 2026	Not published	0.5% to 2%, citing DealRoom	Not published	Buy side
Eton Venture Services, Chris Walton JD, 4 March 2026	$5,000 to $10,000 under $1M	7% to 10% under $1M	Fixed option $50,000 to $75,000	Both, buy side retainer led
Eton Venture Services, same table	$10,000 to $20,000 on $1M to $10M	5% to 8% on $1M to $10M	Fixed option $75,000 to $200,000	Both
M&A Community, 6 August 2026	Not published	10% on the first $2M, about 5% above $5M	Not published	Sell side led
Founders Advisors, 4 November 2024	$50,000 to $100,000 in total, paid monthly	Not published	Not published	Both
Buyouts, Acquirer tier	$899, stopped whenever you like	None. Buyers pay membership only	None	Buy side

Two of the seven advisory sources publish a monthly retainer but no success fee, and three publish a success fee but no retainer. Only Eton Venture Services publishes a full scale with a band below $1 million on it, and only Praxis Rock publishes a minimum fee. Nobody publishes a rate card you could sign from.

Our arithmetic, applied to the published scales

What a buy side advisor costs at each purchase price

Retainers assume a six month search at the scale Eton publishes for that deal size. The two success fee columns are the same deal priced under the large deal rate everyone quotes and under the small deal scale M&A Community publishes, so the spread between them is visible instead of averaged away. The last column applies the minimum fee Praxis Rock states.

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Purchase price	Retainer, 6 months	Success fee at 0.5% to 2%	Success fee, small deal scale	Will an advisor take it?
$250,000	$30,000 to $60,000	$1,250 to $5,000	About $25,000	No. Below the $35,000 minimum
$500,000	$30,000 to $60,000	$2,500 to $10,000	About $50,000	Rarely. At the minimum, fee led
$1,000,000	$30,000 to $60,000	$5,000 to $20,000	About $100,000	Sometimes, usually retainer led
$2,500,000	$60,000 to $120,000	$12,500 to $50,000	About $225,000	Yes. The stated floor
$5,000,000	$60,000 to $120,000	$25,000 to $100,000	About $350,000	Yes
$10,000,000	$60,000 to $120,000	$50,000 to $200,000	About $600,000	Yes

The small deal column is our arithmetic on the tiers M&A Community published on 6 August 2026, not a figure they printed for these prices. As a check on the method, their own worked example puts a $7 million deal at about $490,000; the same tiers give us $450,000, roughly 8% below. Treat the column as the shape of the scale, not a quote.

Side by side

A buy side advisor against a marketplace membership, honestly

A fair look at what each does well. Both are useful. Here is where they differ.

Feature	Buyouts	Buy side advisor
What you pay before anything closes	$899 a month on the Acquirer tier, stopped whenever you like	$10,000 to $50,000 a month on retainer, for as long as the search runs
Success fee when you actually buy	None. Buyers pay membership, sellers pay the success fee	0.5% to 2% on large deals, 5% to 10% on small ones
Smallest deal they will work on	No floor	About $2.5 million of enterprise value at a 2% fee
Who finds the targets	You, from verified listings, plus off market deals on the Acquirer tier	The advisor runs proprietary outreach to owners who are not publicly selling, which is a genuine advantage they have
Who negotiates and runs the process	Managed close on the Acquirer tier, with analyst diligence support	A named banker runs it end to end, which is worth paying for on a complex deal
Incentive on the price you pay	A flat membership, so nothing changes if you pay more	A percentage success fee rises when you pay more for the business
What the numbers arrive as	MRR, ARR, growth and churn verified before a listing goes live	Whatever the target hands over, which the advisor then checks at your cost

Comparison reflects general, publicly understood positioning. Capabilities change, so check each marketplace for the latest. Trademarks belong to their owners.

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The minimum fee decides small deals, not the percentage

Praxis Rock states a minimum success fee of $35,000 to $50,000 and draws the conclusion itself: an advisor charging 2% will not pursue a deal below roughly $2.5 million of enterprise value, because 2% of anything smaller does not clear the floor. That single sentence explains why buyers acquiring a $400,000 SaaS business cannot get a buy side mandate priced, and it is almost never the first thing these articles say. It is the first thing that matters. A minimum fee is not a discount you can negotiate into, it is the point below which the engagement stops being worth running.

The 0.5% to 2% figure everyone repeats is the large deal rate

Four of the sources above quote 0.5% to 2% of transaction value, and it has become the default answer to what buy side advisors charge. Read the tables under it and the smallest band is $10 million. DealRoom's own deal size breakdown starts at $10 million to $50 million. Salt Creek says outright that the range may not reflect acquisitions under $25 million. M&A Community, working the small end, publishes 10% on the first $2 million falling to about 5% above $5 million. These are not contradictory numbers, they are the same curve read at opposite ends: the percentage rises sharply as the deal shrinks. Quoting the large deal rate to a small buyer understates the cost by a factor of five or more.

A percentage success fee pays your advisor more when you pay more

On the sell side a percentage fee aligns everyone, because the advisor and the seller both want a higher price. On the buy side it inverts. Your advisor negotiates the price you pay and then earns a percentage of it, so a successful negotiation on your behalf reduces their own fee. Salt Creek raises this directly. It is not an accusation of bad faith and good advisors manage it, but it is a structural reason buy side mandates lean more heavily on retainers than sell side ones do, and it is worth reading the fee basis in the engagement letter before you sign it.

Retainers are credited, announcement and breakup fees are not

Most agreements credit some or all of the retainer against the eventual success fee, which is the part buyers remember. The parts they miss sit further down the same engagement letters. Praxis Rock reports announcement fees of 20% to 25% of total advisory fees payable even when a deal does not close, and buy side teams taking 25% of a breakup fee, up from a historical 15%. M&A Community reports the same announcement fee range. Ask what is owed if you walk away after six months of retainers, because that is the realistic outcome of a search that does not land.

Keep reading on the parts of a deal this page touches: who a business broker actually works for, what brokers charge on the sell side, how the Lehman formula prices a larger deal, the diligence an advisor would run for you, the eight stages of buying a business, how buyers finance the purchase.

Good questions

Buy side advisor fees, answered

A monthly retainer plus a success fee at close. Published retainers run $5,000 to $100,000 a month depending on deal size, and success fees are quoted at 0.5% to 2% of transaction value on larger deals, rising to 5% to 10% on deals under $10 million. Retainers are usually credited against the success fee.

Roughly $2.5 million of enterprise value. Praxis Rock publishes a minimum success fee of $35,000 to $50,000 and notes that an advisor charging 2% will not pursue anything smaller, because the percentage no longer clears the floor. Below that line the constraint is the advisor's willingness to take the mandate, not your budget.

Almost always, and more heavily than on the sell side. Buy side work means researching and approaching many targets with no certainty any of them sells, so the retainer funds a search that may not close. Published ranges are $10,000 to $50,000 a month at Praxis Rock and $25,000 to $100,000 at DealRoom.

Usually some or all of it, but the engagement letter controls it rather than any market standard. Salt Creek and Praxis Rock both describe crediting as normal practice and both point back to the document. Ask for the crediting clause in writing, and ask specifically whether it is full or partial.

The buyer. That is what makes it a buy side engagement: you hire and pay the advisor to find, evaluate and negotiate a target for you. A sell side advisor is paid by the seller out of the sale proceeds, which is why sell side fees are weighted toward the success fee rather than the retainer.

It depends entirely on deal size, and the commonly quoted 0.5% to 2% describes deals above roughly $10 million. On smaller transactions the published scales run far higher: Eton Venture Services shows 7% to 10% under $1 million, and M&A Community shows 10% on the first $2 million falling to about 5% above $5 million.

On a sub $2.5 million acquisition you usually cannot hire one at the published rates, so the practical question is what replaces it. Most small buyers source from marketplaces, run diligence with an accountant and an attorney engaged by the hour, and keep the advisory spend for the two places it earns its keep: quality of earnings and the purchase agreement.

A broker is engaged by a seller to market one business and is paid from that sale. A buy side advisor is engaged by a buyer to search across many businesses, including owners who are not publicly selling, and is paid by the buyer. When you deal with a broker on a listing, that broker works for the other side of your transaction.

The percentage and the retainer usually are, within limits. The minimum fee is the hardest number to move, because it is what makes a small engagement viable at all. The terms most worth negotiating are the crediting of retainers, the tail period after termination, and whether an announcement fee is payable on a deal that never closes.

Defines your acquisition criteria, builds and works a target list, approaches owners, evaluates the businesses that respond, coordinates due diligence and negotiates through closing. Salt Creek describes that scope directly. The title is used loosely, so read the engagement letter for the deliverables and the outreach volume rather than relying on the label.

You have paid the retainers and you own nothing. That is the risk the retainer exists to shift onto you, and it is why the total matters more than the monthly figure. At $25,000 a month, an eight month search that closes nothing has cost $200,000, which is Praxis Rock's own worked example of a normal engagement.

Buyer membership is $99, $299 or $899 a month, billed monthly in USD with no free tier, and buyers pay no success fee when a deal closes. The $899 Acquirer tier is the one that overlaps buy side advisory work: off market deals, analyst diligence support and a managed close. You stop it from your account whenever you like.

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