Rahid Rashid, 28 August 2026
Due diligence has traditionally been something buyers commission on their own terms.
Increasingly, sellers are commissioning it themselves before going to market, which is proving a powerful way to keep deals moving.
Could vendor due diligence be the right approach for you? Our team consider the rise of this new trend in corporate finance.
Vendor due diligence, often shortened to VDD, involves appointing independent advisers to carry out a thorough review of the business on the seller's behalf.
This review may cover financial, tax, commercial and operational matters, providing a detailed assessment of the business and identifying potential issues before buyers begin their own investigations.
For business owners preparing for a sale, vendor due diligence can provide greater visibility over the strengths and risks within the business before entering formal negotiations.
Market data suggests vendor due diligence is now used in the majority of mid to large private equity exits and its use is spreading further down the market.
Sellers are recognising that presenting buyers with a credible, independently produced report shortens the time buyers need to reach an offer and reduces the scope for last-minute renegotiation.
Where multiple bidders are involved, a single vendor due diligence report can be shared with each of them rather than each buyer commissioning its own separate review.
This avoids the disruption of repeated information requests and site visits and allows a sale process to run to a much tighter timetable.
A well-prepared VDD report gives sellers the chance to identify and address issues before a buyer finds them, rather than reacting defensively once negotiations are underway.
It signals to the market that the business is well run and ready for sale, which in turn tends to support a stronger price and a smoother path to completion.
As buyers continue to take longer over due diligence and demand more evidence before committing, vendor due diligence is fast becoming less of an optional extra and more of a standard feature of a well-run sale process.
If you are preparing your business for sale and would like to discuss vendor due diligence, please speak to our Corporate Finance team.
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Vendor due diligence is an independent review commissioned by a seller before a business goes to market. It assesses financial, tax, commercial and operational matters to help prepare for a transaction.
Vendor due diligence helps identify potential issues before buyers conduct their own investigations. This can reduce deal risk, improve transparency and support a more efficient sales process.
Vendor due diligence is commissioned by the seller before marketing a business for sale. Buyer due diligence is conducted by prospective buyers after they have expressed interest in an acquisition.
Yes. A vendor due diligence report can reduce repeated information requests, streamline buyer investigations and help transactions progress more efficiently.
Vendor due diligence does not directly increase value, but it can support valuation discussions by providing a clearer understanding of financial performance, risks and opportunities.
Ideally, vendor due diligence should be undertaken before a business is formally marketed for sale, allowing enough time to address any issues identified during the review.
While commonly used in larger transactions and private equity exits, vendor due diligence can also benefit owner-managed and mid-market businesses seeking a well-prepared sale process.
Key benefits include identifying risks early, reducing transaction delays, improving buyer confidence, supporting valuation discussions and helping transactions reach completion more smoothly.