I thought I’d write this post about due diligence (also known as ”DD”) which is the least exciting part of every investment or M&A (Mergers and Acquisitions) transaction. We’ve advised hundreds of investors, buyers and founders of businesses and many hope or ask to skip over due diligence either through light due diligence or completing due diligence post deal.
Invariably these deals that skip detailed, formal and thorough due diligence suffer almost without exception whether the acquisition is small or large e.g. listed public companies.

Experienced M&A professionals and investors have seen enough deals to know that due diligence is a mandatory step in any transaction, however I’ve seen many CEOs, CFOs and directors (even of ASX listed companies) ignore acquisition due diligence on the basis that:
There’s a multitude of benefits, including ensuring that the vendors disclose everything that may impact the value of the business – not doing so allows for a potential future claim against warranties in the sale agreement. Other benefits include:
Normally you would involve an M&A Advisor for the commercial due diligence and high level accounting and legal review. Can an accounting firm or lawyer do all the due diligence? Typically no – there’s significant commercial acumen required and from what we’ve seen over the years, accounting and legal professionals have select expertise rather than broad deal and transaction skills.
Due diligence is usually run as a formal process with a timetable and initial due diligence list (see our high level due diligence guide) that evolves rapidly as information is received. It is also common to maintain a Question & Answer (Q&A) list where the buyer asks questions and the vendor identifies the right person at their end to help answer the question. Both the due diligence list and Q&A register often form part of the sales agreement as a schedule.
How Long Does Due Diligence Take?
Allow at least 3 weeks at the very least, due diligence takes time and isn’t about just receiving materials – you will need to read and review each document and identify the hidden and potential issues. Normally it is about working out what key business challenge is being hidden or glossed over. Vendors themselves will struggle to get you all the materials quickly as they should review them before providing – often this whole process takes a month before you even get into detailed Q&A around select specifics.
In a management buy-out (MBO or LBO, Leveraged Buy-Out) the management team is undertaking the acquisition from the parent company. There’s a perception that due diligence should be quick and light. A few significant issues typically emerge:
Quite simply this is the whole purpose of due diligence and key issues discovery will often trigger a price discussion or a change in the deal terms or simply the buyer should walk away – bad deals lose value quickly and lead to significant disputes.
You can see our simplified due diligence checklist here.
Kapitalized – M&A Simplified Due Diligence Checklist