Vendor Due Diligence is a seller-commissioned, third-party diligence package — financial, commercial, tax, legal — produced before the auction to compress buyer diligence and protect transaction speed.
Definition
Vendor Due Diligence is a diligence package commissioned and paid for by the seller, produced by an independent firm, and shared (under reliance arrangements) with bidders. It typically covers financial, commercial, tax, and sometimes legal and ESG dimensions.
The output is a comprehensive set of reports and a populated data room that sets the diligence baseline — bidders top up with their own confirmatory work rather than starting from scratch.
Why Sellers Use It
VDD compresses the auction. It shortens the time bidders need to file final offers, narrows the range of price-relevant findings that can surface late, and reduces the conditionality of bids. For PE sellers running a structured auction with multiple bidders, VDD pays for itself in process control.
It also surfaces issues early. If there is a hairy tax position, a customer concentration risk, or a working-capital normalisation question, the seller would rather know — and frame — these issues before bidders do.
When VDD Is Worth Commissioning
Auction processes with three or more credible bidders. Cross-border processes where bidders sit in different jurisdictions and benefit from a unified diligence base. Carve-outs where the standalone financial picture isn't yet documented. Higher-value transactions where the bid integrity premium justifies VDD cost — typically deals above €100m enterprise value, although the threshold is dropping.