The headline number looked right. Both sides shook hands. And then the buyer started working through the detail.
Most business sales don’t collapse because the price was wrong. They collapse because the detail wasn’t right. Here’s what transaction advisory does, why deals fail, and what it takes to get one across the line.
What they found wasn’t fraud or deliberate misrepresentation. It was something more common and almost as damaging: gaps. Missing reports, untested assumptions, and contract terms that looked balanced on the surface but shifted most of the risk squarely onto the buyer. Confidence eroded. The deal very nearly didn’t happen.
This kind of situation is more common than you might think. Business sales and acquisitions are complex, high-stakes transactions, and the distance between a deal that completes and one that collapses is often much smaller than either party expects. Getting the right advice, early, is what closes that gap.
What is transaction advisory, and why do you need it?
Transaction advisory brings together financial, tax, legal, and risk expertise to support a deal from the earliest stages through to completion. In practice, that means conducting due diligence to verify that the information underpinning the deal is accurate and complete, structuring and negotiating the Sale and Purchase Agreement to ensure risks are clearly allocated, and managing specialist workstreams, particularly around tax, where the right protections can be worth significant money.
The goal isn’t to make deals harder. It’s to make them stick. Risks identified early can be priced, contracted around, or resolved before they become deal-breakers. Risks discovered at the eleventh hour tend to do one of two things: blow up the deal or leave one party holding a problem they didn’t know they were buying.
Why do business acquisitions go wrong?
Most deals that fail, or nearly fail, come down to a handful of recurring issues.
Inadequate due diligence is the most common. When key commercial or technical questions aren’t properly tested, both parties end up exposed to late-stage surprises that should have been on the table from the start. It’s not always a matter of corners being cut. Sometimes the process isn’t designed to catch the right things.
Unrealistic deal terms are the second major culprit. A transaction structure that doesn’t reflect commercial reality creates friction at every stage of negotiation. When the mechanics of a deal don’t hold up to scrutiny, trust erodes along with them.
The most expensive mistakes in business sales aren’t made at the negotiating table. They’re made in the months before anyone sits down around it.
Contract gaps are also a significant risk, and one that’s frequently underestimated. Vendor and purchaser positions are fundamentally different, and boilerplate Sale and Purchase Agreement clauses rarely do justice to either. Well-drafted warranties and indemnities, particularly around tax, are the difference between a contract that really will protect you and one that doesn't provide the protection you expect.
Finally,, conflicts of interest or poorly defined adviser roles can introduce tension that derails an otherwise workable deal. When parties aren’t clear on who their advisers are acting for, trust breaks down quickly.
How good advice keeps a deal alive
In the case we described, the deal was rescued. Both parties agreed to slow down, which, counterintuitively, was what allowed them to move forward. Due diligence was strengthened. Key information was properly reviewed and documented. The contract was renegotiated so risk was shared more fairly, and the buyer received stronger protections on the issues that concerned them most. Adviser roles were clarified, which rebuilt the trust that had started to fracture.
The seller kept the agreed price. The buyer got comfortable with what they were acquiring. The deal completed.
That outcome required someone in the room who could see the whole picture: financial, legal, tax, and commercial. That’s what transaction advisory delivers. Not just a checklist of things to verify, but a coordinated approach that keeps all the moving parts aligned.
What to expect if you're buying or selling a business
Complex transactions take time, and the process can feel intensive. Here’s what to be prepared for:
- Due diligence will be detailed. Financial, tax, and operational information all need verification, and the process often surfaces questions that require follow-up.
- Warranties and indemnities will be negotiated hard. Buyers want broad protection; sellers want to limit their exposure. Getting the balance right takes time and expertise.
- The Sale and Purchase Agreement will go through multiple drafts. Significant refinement is normal, particularly as due diligence findings shape what protections are needed.
- Adviser roles need to be clear from the start. Where shared advisers are proposed, transparency is essential, and independent advice is often recommended.
- Regulatory requirements may apply. Competition clearance and other compliance considerations can introduce conditions and extend timelines.
None of this should be a reason to avoid a transaction that makes commercial sense. It’s a reason to go in with the right support.
The Lesson from every deal that almost didn't happen
Price matters. But structure, due diligence, and contract quality matter just as much. The businesses that navigate acquisitions well are the ones that treat those things as equally important, not as afterthoughts once the headline number is agreed.
If you’re considering buying or selling a business, or even just starting to think about what that might look like, the best time to talk to an adviser is before the process begins. We’ve seen what happens when that conversation happens too late. We’d rather be part of getting it right from the start.
Thinking about buying or selling a business?
Let's talk before the process starts. Early advice is almost always the best investment in a transaction. Give us a call, and we’ll set up a time. You can also reach out to the author, Bryan Oh, via email at bryan.oh@uhyhn.co.nz for more information.
