Perspectives

Transactions & M&A

Vendor due diligence: the value of reviewing oneself

Letting the buyer discover the problems is expensive. Finding them yourself — and remedying them before the process begins — is what separates a well-paid exit from a protracted negotiation.

Annastasios MartidisPartner10 June 20263 min read
Vendor due diligence: the value of reviewing oneself

In a mature transaction process, surprises always work to the seller's disadvantage. Every issue that first surfaces during the buyer's due diligence shifts the negotiation from value to risk — and every shift to risk translates into price, warranties or escrow. A well-executed vendor due diligence (VDD) is the single most effective tool for preventing this.

VDD is not a report. It is a strategic choice.

Most sellers think of VDD as a document — a legal, financial or commercial review handed to bidders at an early stage. That perception is misleading. A VDD is a strategic instrument whose primary function is not to inform the buyer, but to give the seller control of the narrative, the timetable and the pricing mechanism.

When the review is conducted under the seller's direction, it moves at the seller's pace. Issues that would otherwise have arisen in a confrontational buyer-side DD are identified early, documented systematically and — where possible — remedied before the first bidder is even granted access to the data room.

Scope: legal, tax, commercial

A full VDD covers three parallel workstreams:

  • **Legal.** Corporate structure, ownership, material agreements, IP portfolio, employment relationships, disputes, data protection and regulatory permits.
  • **Tax.** Historic tax positions, transfer pricing, latent tax exposures and structuring opportunities ahead of the transaction.
  • **Commercial.** Customer concentration, contract terms, change-of-control clauses and underlying quality of earnings.

The depth is calibrated to deal size and the buyer universe. A process aimed at international private equity funds calls for a different level than an industrial sale to a Swedish strategic buyer.

Red flags are handled before the process begins

This is where the VDD pays back its cost many times over. Classic findings — an unclear IP assignment from a former consultant, a customer with a unilateral right of termination on change of control, a shareholders' agreement out of step with the articles of association — are rarely dealbreakers in themselves. But unearthed during the buyer's process, they become leverage for price reductions or specific warranties.

Found during the VDD, they are dealt with proactively instead: a side letter is negotiated, a confirmation is obtained, a structure is adjusted. By the time the buyer's advisers reach the same point, the documentation is already in place.

Control over pace and narrative

One of the most underestimated effects of a VDD is the time saving. When a buyer enters a process where the material is pre-structured, the questions anticipated and the answers already documented, the time from LOI to completion is materially shortened. That reduces the risk of the market shifting during the process — and reduces the buyer's ability to use time pressure as a negotiation tool.

In addition: when bidders compare two otherwise equivalent targets, they tend to favour the one with cleaner documentation. Lower perceived risk translates into higher bids.

When should a VDD be commenced?

The rule of thumb is six to nine months before a planned process. For companies with complex international structures, regulatory exposure or a history of rapid acquisitions, the timeline may need to be longer. What matters is that the VDD has time to produce actionable insight — not just a report.

For sellers considering a transaction within the next twelve months, the question is seldom whether a VDD should be carried out, but when and to what depth. The cost of reviewing yourself is always lower than the cost of letting someone else do it first.