Deals are not stalling for lack of capital. They are stalling on two numbers that both sides believe.

What is the gap, and why is it wider now?

It is the distance between the price a seller has decided is fair and the price a buyer can justify to whoever approves it. When that distance is small, deals close at a number in between. When it is large, nothing happens, and the absence looks from the outside like a shortage of buyers.

It is not a shortage of buyers. Capital is present and is being deployed at the top of the market: global deal value is tracking toward roughly $4 trillion in 2026, up 13%. What has fallen is the count. Deal volume is tracking down 13% to about 42,000 transactions for the year, and valuation gaps are named explicitly as a lead constraint suppressing middle-market activity (PwC, Global M&A industry trends: 2026 mid-year outlook, June 2026, on LSEG data through 31 May 2026).

The consequence of getting it wrong is measurable on the buyer's side of the table, which is why buyers are disciplined about it. Overpaying for the target is the most-cited cause of M&A failure, appearing in 42% of failures, with inadequate diligence second at 31% (Acquisition Stars, March 2026, synthesizing published work from Harvard Business Review, McKinsey, KPMG, Bain and Deloitte). A buyer holding the line on price is not being difficult. They are managing the largest single risk in their own record.

What anchors the seller?

A number from a different market, usually one they did not choose arbitrarily. It is typically a comparable from the last cycle peak, a figure quoted by a competitor, or a large-cap print reported in the press. Transactions above $250m of enterprise value averaged 12.2x enterprise value to EBITDA in the first quarter of 2026 (Capstone Partners, 4 June 2026), and that is the sort of number that circulates.

The difficulty is that there is no current published counter-anchor at the relevant size. The most recent table of middle-market multiples by enterprise value band covers the first nine months of 2025, and its publisher has issued nothing since February 2026. So the seller's anchor is stale and specific, and the honest correction to it is stale and general. We have written separately on what a defensible anchor looks like when no current size-band print exists, under the heading that the multiple in the headline is a large-cap print.

There is a second anchor that is harder to argue with, and it is not financial. Owners price the business they built, including the years it took and what it is worth to them. That number is real and it is not a valuation. Separating the two, privately, before a process, is the single most useful piece of preparation an owner can do on price.

What anchors the buyer?

Arithmetic, mostly, and it has moved against the seller twice over. The first move is the cost of capital: spot cost of debt sat at 9.05% at 30 June 2026 and cost of equity rose 25 basis points during the second quarter to 10.0%, now 50 basis points above year-end 2025 (VRC, Q2 2026 Equity Markets Report, July 2026). Required returns rose while public multiples expanded, which widened the gap rather than closing it.

The second move is leverage. Total debt for issuers under $10m of EBITDA now clears at 2.50x to 3.25x, against 2.50x to 4.00x in July 2025 (SPP Capital Partners, Market At A Glance, July 2026). Three quarters of a turn of lost debt capacity comes out of the buyer's price directly, because the equity has to replace it and equity is the expensive layer.

The third is the return the buyer has to underwrite to. Purchase multiples multiplied by financing costs are in record territory, and a transaction that needed 5% EBITDA growth a decade ago now needs 12% to produce the same result over a five-year hold (Bain, Private Equity Midyear Report 2026, 8 June 2026). A buyer who cannot see that growth in the evidence will not pay for it in the price, whatever the seller believes about the potential.

What actually bridges it?

Structure, and the market is currently using a lot of it. With sponsor-to-sponsor processes stalling on valuation, practitioners report a decent amount of deferred purchase price mechanisms hedging the performance of sellers against the buyer's underwritten valuation, through earnouts, seller notes and similar structures (PitchBook News, 6 July 2026).

The prevalence is documented and it rises as deals get smaller. Thirty-five percent of the smallest lower-middle-market deals, those with closing payments of $25m or less, carry an earnout, against 29% across all lower-middle-market deals and 24% of private-target deals outside life sciences (SRS Acquiom, 2026 M&A Deal Terms Special Report: Lower Middle-Market Deals, 5 June 2026, and M&A Earnout and Milestone Trends, 7 July 2026).

The catch is what the bridged portion is worth. Across all deals carrying an earnout, closer to one in five earnout dollars is actually paid (SRS Acquiom, 7 July 2026). A gap closed with a headline number that is a fifth earnout has not been closed by four fifths of the amount it appears to have been closed by, and we have set out how to price that separately. The certain half is also softer than it looks: 93% of deals carry a purchase price adjustment mechanism and 89% of those with one recorded an actual adjustment (SRS Acquiom, 19 May 2026).

Used properly, structure is not a trick. It is a way of letting each side keep its own view of the future and be paid according to which one turns out to be right. Used carelessly, it is a discount the seller agreed to without noticing.

When is the gap telling you something price cannot fix?

When it is the same gap with every buyer. A gap against one bidder is a negotiation. A gap against all of them is a valuation, and the market is the thing doing the valuing.

The current market is unusually explicit about this. Practitioners rank mismatched price expectations as the second-largest risk to middle-market activity and describe the two populations separately: multiples for A-grade targets are very high, while lower-grade companies are not getting bids at all (ACG and GF Data, Q3 2026 Market Pulse Survey, published 15 July 2026). A business receiving no bids is not experiencing a bid-ask gap. It is receiving an answer.

The distinction matters because the remedies are opposite. A genuine gap is bridged with structure, a second bidder, or time. A quality verdict is not bridged at all; it is fixed in the business, or it is accepted. Running a process to find out which one you have is expensive, because the finding out is done in public and the market remembers a withdrawn process.

The cheaper sequence is to establish the answer privately first. A vendor quality of earnings report, an honest read of customer concentration and management depth, and a buyer list tested for whether a credible second bidder actually exists will usually tell an owner which conversation they are about to have, before it costs anything to have it.