How long does it take to sell a business?
Nobody publishes the answer. There is no source giving median launch-to-close days for a middle-market sell-side process, and every figure in circulation is either an individual firm's in-house average or an unattributed number that has been repeated until it looks like data.
That is worth stating plainly rather than working around, because the question is asked at the start of almost every conversation and the honest answer changes what an owner does with it. A number without a source cannot be planned against. What can be planned against is the direction of travel, which is published, dated and specific.
The most useful framing we can offer is this. Take whatever your own advisers' realized experience says for a business of your size and sector, and add one to three months for what diligence has become. Then note that the stages before launch, which are the ones nobody counts, are usually longer than the ones after it and are entirely within the owner's control.
What does the data actually show about process length?
That it is extending, and that the people running the processes expect it to keep extending. Seventy-three percent of senior US investment bank executives expect the due diligence process to become more complex over the next twelve to twenty-four months, with fifteen percent expecting it to become much more complex (SRS Acquiom and Mergermarket, survey of 150 senior US investment bank executives, published 23 February 2026).
The quantified part is narrower and more useful. One in five respondents report that timelines have already extended over the past two years, and of those, fifty-seven percent say one to three additional months have been added. That is the only published figure attaching a duration to the change, and it is a figure about diligence specifically rather than about the whole process.
Where the time is going is the part that should change how an owner prepares. Fifty-one percent now call technology diligence the single most burdensome element of the entire review, and eighty-four percent anticipate increased cybersecurity scrutiny over the next twelve to twenty-four months. The incremental months are not being spent on the financial statements. They are being spent on systems, data, contracts and security, which are workstreams most middle-market sellers have never had to produce documentation for.
One caveat about the vintage. That survey was fielded in the fourth quarter of 2025 and published in February 2026, and its forward horizon runs into 2028. It is the best available evidence and it is not a current-quarter reading, which is a distinction worth keeping when someone quotes it as this month's news.
Which stages does an owner actually control?
The ones before anyone else is involved, and they are the largest share of the calendar. Preparation, which means assembling the financial record, the quality of earnings work, the contract and systems documentation and the add-back schedule, happens entirely on the seller's clock. Nothing about it depends on a buyer, and every week not spent on it before launch is spent on it during exclusivity instead, at a much worse moment.
The stated preparation standard for this market is at least thirty-six months of clean, normalized monthly financial statements, with a quality of earnings report commissioned early rather than in response to a buyer's findings, and diligence readiness now extended to technology and cybersecurity (Capstone Partners, Capital Markets Update, 4 June 2026). Producing thirty-six months of clean monthlies in a business that has never kept them is not a two-week exercise, and it is the single most common reason a process starts later than the owner intended.
After launch, control drops sharply. Marketing and first-round bids run on the buyer universe's calendar, and management meetings run on the availability of people who have their own portfolios. Exclusivity and documentation run on the buyer's diligence providers, its lenders and its counsel, and the seller's influence over any of them is limited to responsiveness.
The one lever that still exists after launch is the completeness of what has already been produced. A data room that answers a question before it is asked removes a round trip; a data room that produces a document three days after a request adds one, and the requests run in the hundreds. That compounding is where processes of the same nominal length diverge by months in practice.
| Stage | Clock is set by | What shortens it |
|---|---|---|
| Preparation | The seller, entirely | Thirty-six months of clean monthly financials, an early quality of earnings report, and technology and cyber documentation produced before launch |
| Marketing and first-round bids | The buyer universe, and how quickly materials answer the obvious questions | Materials that pre-empt the first ten questions; a buyer list built on fit rather than length |
| Management meetings and second round | Buyer availability and internal approvals | Rehearsed management, and financial detail already released rather than promised |
| Exclusivity and confirmatory diligence | The buyer's accountants, lenders, counsel and technology reviewers | A complete data room; nothing discovered at this stage that the seller already knew |
| Documentation and closing | Counsel on both sides, and the financing | Working capital definitions and disclosure schedules settled before exclusivity, not during it |
“The calendar an owner remembers starts when the teaser goes out, and the calendar that actually decided the outcome started a year earlier. By the time a process launches, most of the timeline has already been set by how much of the record exists and how much still has to be built while buyers wait.”
What do current market conditions do to the clock?
They add competition for attention at the front and remove one category of bidder at the back. A record 3,523 businesses came to market through one lower-middle-market platform in the second quarter of 2026, up 4.79 percent year on year and the highest quarterly total on record for that platform, which serves businesses between roughly $2.5 million and $250 million of transaction value (Axial, The SMB M&A Pipeline: Q2 2026, 21 July 2026).
Record supply meeting a buyer universe that is being selective is a first-round problem, not a documentation problem. It means more time between launch and a credible indication of interest, and it means a business whose materials do not immediately answer the obvious questions gets read later or not at all.
At the other end, a second sponsor is no longer a dependable underbidder. Sponsor-to-sponsor sales fell fifty-seven percent by value in the second quarter of 2026 with the count down thirty-eight percent, the lowest quarterly mark in at least a decade (PitchBook Q2 2026 US PE Breakdown, reported by PitchBook News, 6 July 2026). Fewer credible bidders at the end of a process means less pressure on the buyer to move, and less pressure means a longer exclusivity.
Working against that is a change in urgency that is genuinely new this year. Middle-market practitioners are now discussing an impending rate increase rather than a cut, with one respondent noting there could be pressure to get deals done now before rates go up, and sixty-three percent expecting activity to increase in the second half of 2026 (ACG and GF Data, Q3 2026 Market Pulse Survey, published 15 July 2026). Buyers with a financing deadline move faster than buyers who believe waiting is free.
How should an owner plan the calendar?
Backwards from the date the money is needed, not forwards from the date the decision is made. If a family, a tax event or a retirement fixes a date, the preparation has to start far enough ahead that the launch is a choice rather than a scramble, and the honest planning assumption is that the preparation phase is the long one.
Two specific allowances are supported by the published record. Add one to three months to whatever historical baseline applies, for diligence complexity, and put that time into technology, systems and cybersecurity documentation rather than into more financial analysis, because that is where the survey says the burden now sits. Both allowances come from the same source and both are about diligence rather than about the market.
One further allowance is prudent and is not in any dataset, because no dataset exists: the possibility that the process does not close at all. Roughly one in three signed letters of intent in the middle market does not reach completion, which we have written about separately. A plan with no second path is a plan that assumes an outcome the base rate does not support.
The summary is unglamorous. The stage nobody counts is the one that determines the timeline, the extra months the market has added are landing in the workstreams sellers are least prepared for, and the published record cannot tell you how long your process will take. It can tell you which parts of it are yours.
As of August 2026
Sources: SRS Acquiom and Mergermarket, M&A due diligence study 2026, published 23 February 2026, surveying 150 senior US investment bank executives with the survey fielded in Q4 2025 and a forward horizon running into 2028, for 73% expecting diligence to become more complex over the next twelve to twenty-four months, 15% expecting much more complex, one in five reporting timelines already extended, 57% of those reporting one to three additional months, 51% calling technology diligence the single most burdensome element and 84% anticipating increased cybersecurity scrutiny; Capstone Partners, Capital Markets Update, 4 June 2026, for the standard of at least thirty-six months of clean normalized monthly financial statements, the early quality of earnings guidance and the extension of diligence readiness to technology and cybersecurity; Axial, The SMB M&A Pipeline: Q2 2026, 21 July 2026, for 3,523 businesses coming to market in Q2 2026, up 4.79% year on year and the highest quarterly total on record for that platform, which serves transactions between roughly $2.5 million and $250 million of transaction value; PitchBook Q2 2026 US PE Breakdown, reported by PitchBook News, 6 July 2026, for sponsor-to-sponsor sales down 57% by value with the count down 38%, the lowest quarterly mark in at least a decade; ACG and GF Data, Q3 2026 Market Pulse Survey, published 15 July 2026, for 63% expecting activity to increase in the second half of 2026 and for the practitioner comment on pressure to complete transactions before rates rise. No median or average process duration is published here, because no source publishes one for the middle market as at August 2026; the stage sequence and the levers that shorten each stage are drawn from our own mandate practice. Companion articles on this site cover why one in three signed letters of intent never closes, and what a quality of earnings report costs.