The Numbers That Should Change How Advisors Work
PMI Stack's 2026 research compilation from McKinsey, KPMG, Bain, Deloitte, and EY tells the full story. 83% of deals fail to boost shareholder returns. Only 14% achieve significant success across strategic, operational, and financial measures simultaneously. Employee turnover hits 47% in Year 1. IT integrations fail or encounter major issues 84% of the time.
But there's a number that deserves more attention: companies that track synergies from Day 1 achieve 92% success rates. The gap between 83% failure and 92% success comes down to one thing: explicit targets, tracking processes, and clear ownership installed before the deal closes.
The Pattern Starts Before Close
Most people think deal failure happens after the acquisition. The research says otherwise. Harvard Business Review data shows that 31% of failures trace to inadequate due diligence and 27% to poor integration execution. These aren't separate problems. They're the same coordination failure at different stages.
During diligence, the advisor coordinates document collection across five to ten workstreams. The target company's team is scattered across departments, each responding to requests via email. After close, the integration team coordinates operational merging across those same departments. Same people. Same scattered communication. Same result.
MIT Sloan Management Review research (2026) found that executives focus too heavily on financial forecasts and overlook the strategic and cultural integration challenges. The coordination infrastructure that would surface these problems early simply doesn't exist in most deals.
First-Time Acquirers Get Hit Hardest
First-time acquirers have a 77% failure rate. Serial acquirers improve to 54% through experience. The difference isn't talent or deal selection. It's process. Serial acquirers build repeatable coordination infrastructure. They know which documents to request, in what order, from whom, and they track completion in structured systems rather than inboxes.
The performance gap between experienced and inexperienced acquirers amounts to an 8.5 percentage point swing in total shareholder return. Process isn't a nice-to-have. It's the variable that determines whether value gets created or destroyed.
What the Best Acquirers Do Differently
The IMAA's best practices research identifies seven core areas that predict integration success. Number seven is telling: report and collaborate in real time. The recommendation is explicit: throughout the integration process, teams should drive collaboration on a collaborative platform, instead of email and static spreadsheets.
The firms that close deals faster and integrate more successfully share a common trait: they replaced scattered coordination with a structured environment where every request has an owner, a deadline, and visible status. From diligence through integration.
See how M&A advisory firms are building structured coordination into every deal.
