Traps in post-merger integration

20.6.2019

So, you have found a growth partner, survived the due diligence process, closed the transaction and held the celebration dinner. Congratulations!! You are now at day 1 of the rest of your business’ future. All the promises made are now long in the rear-view mirror and the day to day running of the merged business becomes the new reality. How do you make sure that all the value both parties saw in the merger are realised?

Once a transaction is completed the number of people involved grows exponentially. The curtain is peeled back. The Profit & Loss owner and their operations team begin to interact with the acquired business. As hard as everyone involved in the transaction works through the process, the first few days, weeks and months are critical to embedding the merger and capitalising on the best of both organisations. You start to hear questions like; What is going to happen to my job? Who do I report to? What do we tell our customers? Whose system do we use? What is going to happen with the brand? Who gets credit for the sale? Where does the profit margin go?

While deal teams always feel like they have a plan, the business outcomes 12 months post transaction often don’t meet the initial expectations of either party. Research suggests that approximately 79% of organisations believe they achieve transaction success (good pricing). However, only 65% believe they achieve strategic success (the right deal), 49% financial success (cost synergies/revenue synergies/capital synergies), and just 35% believe they achieve operational success (integration) (1). Furthermore, when questioning executives on the key factor of success in M&A, the top answer was a well-executed integration plan (2).

So why is this? While every case is unique, some of the more common traps include:

  • The absence of a very clear vision of the future state;
  • Over-simplification of the complexity of the integration process;
  • Lack of tactical detail the leadership team, sales and operations teams need to resolve their day to day conflicts efficiently and effectively;
  • The absence of a step by step plan for how to get there;
  • Failure to resource said plan;
  • Or most commonly, a combination of all the above.

Best practice starts with a clear vision for the combined entity, including a clear understanding of the values and behaviours the combined organisation must exhibit to succeed. This needs to be followed up with a clear and detailed plan for integration which has been developed by the functional and operational leaders of the business. The plan needs to be robust enough to survive the various tests the integration will throw at it.

Operational goals are often the most difficult to achieve because they require a sustained commitment to integration delivery. However, if done right, these can provide the greatest benefit due to their recurring nature and are often the key driver of sustained value creation from M&A activity.

InterFinancial’s growth advisory team is well versed in helping clients develop and execute effective post-merger integration plans. Drawing on our broad M&A experience and regular interaction with investors, our goal is to not just close deals, but to help you make sure the transaction is successful over the longer term.

(1) Calipha, R, Tarba, S., and Brock, D. Mergers and Acquisitions: A review of phases, motives, and success factors. Advances in Mergers and Acquisitions, Volume 9, 1-24. 2010

(2) KPMG. US executives on M&A 2016

Authors: Michael Kakanis & Brad Shaw

29.5.2026

Sector dashboards May 2026

Our monthly sector dashboards are out! Our dashboards look at the valuation multiples across seven key sectors, each made up of a number of subsectors. The data takes into account the sale prices of similar companies based on; products, end markets, services, assets classes or other characteristics. The publications include all companies listed on the […]

Read more
28.5.2026

InterFinancial advises Commit Works on sale to Datamine

Commit Works is a Brisbane-based software company serving the mining and metals industry. Its CiteOps platform digitises shift-level planning, resource allocation, task coordination and production tracking, connecting the short-term plan to what actually happens on shift across underground coal, open cut, underground hardrock and smelter operations globally. Datamine is the world’s leading provider of technology […]

Read more
29.4.2026

Sector dashboards April 2026

Our monthly sector dashboards are out! Our dashboards look at the valuation multiples across seven key sectors, each made up of a number of subsectors. The data takes into account the sale prices of similar companies based on; products, end markets, services, assets classes or other characteristics. The publications include all companies listed on the […]

Read more
29.4.2026

From technical capability to economic inevitability: Why Clean Energy companies fail to scale?

Working with organisations attempting to commercialise clean energy technologies, I have observed a pattern persistent enough to warrant explicit articulation. Across hydrogen, electrification, storage, biogas, low-carbon fuels, and industrial heat, companies with credible technology, capable teams, and supportive boards still fail to compound enterprise value. Not because the technology disappoints, and not because the market […]

Read more
31.3.2026

Sector dashboards March 2026

Our monthly sector dashboards are out! Our dashboards look at the valuation multiples across seven key sectors, each made up of a number of subsectors. The data takes into account the sale prices of similar companies based on; products, end markets, services, assets classes or other characteristics. The publications include all companies listed on the […]

Read more
31.3.2026

Not every healthcare deal is a sale: rethinking what M&A can look like

When healthcare business owners come to us thinking about a transaction, the conversation almost always starts in the same place. What is the business worth, and what does a sale process look like? Those are the right questions. But they’re not always the only ones that matter. Embedded in both is an assumption; that the […]

Read more
27.2.2026

Sector dashboards February 2026

Our monthly sector dashboards are out! Our dashboards look at the valuation multiples across seven key sectors, each made up of a number of subsectors. The data takes into account the sale prices of similar companies based on; products, end markets, services, assets classes or other characteristics. The publications include all companies listed on the […]

Read more
27.2.2026

On the floor at EvokeAg 2026: Luke Harwood’s reflections on Australian Agtech

EvokeAg 2026 drew over 1,500 delegates from 18 countries to Melbourne in February, with the Federal Government committing another $450,000 to support the event over the next three years. The visible momentum is real, and the cohort of companies I spent two days meeting reflected it. Most were past proof-of-concept by a meaningful margin, with […]

Read more