Vendor due diligence how to prepare a package that speeds up the deal

Grigorii Lutcenko

13.03.2026 | 6 min read

Updated: 13.03.2026

Since 2016 I have led COREDO and have personally gone through dozens of cross-border transactions with clients: from private sales to strategic M&A involving private equity funds. Over that time it has become clear: a well-prepared vendor due diligence (VDD) is the best way to shorten time to Closing, increase the price and reduce the parties’ frustration. When the seller takes responsibility for the preparation, the buyer is left to verify rather than search. This speeds up negotiations, more clearly structures the risks, and shifts the deal dynamics in favor of the seller.

VDD for the seller: impact on price and ROI

Vendor Due Diligence – is a pre-sale company review carried out by the seller with the preparation of a structured package of documents and a report. Unlike buy-side due diligence, which is initiated by the buyer, VDD allows you to identify legal, tax and operational risks in advance, prepare disclosures and assemble the factual basis that an investor can rely on without delays. Our experience at COREDO has shown that having a detailed vendor due diligence report speeds up analytical sprints for private equity funds and reduces the likelihood of “price surprises” when signing the SPA.

Who and when to involve in sell-side VDD?

Who to involve? Lawyers experienced in SPA/Disclosure Letters, financial analysts for QofE, tax consultants on transfer pricing and tax clearance, AML specialists and data privacy experts on GDPR. For deals in Singapore and Dubai, additionally, advisors on industry licenses and regulatory approvals. Deal accelerators work when the seller’s PMO prepares templates in advance: term sheet key provisions, SPA checklists, a disclosure schedule “skeleton” and a vendor due diligence report template.

A typical VDD preparation timeline looks like this:

1. week 1–2 – collection and data remediation;
2. week 3–5, legal and financial analysis;
3. week 6–7 – drafting disclosure letter and vendor-friendly disclosure schedule;
4. week 8, publication of the VDD and opening the data room with staged disclosure.

Data room: structure and security

The data room structure for VDD should be intuitive and equally understandable to both a strategic buyer and a PE investment committee. I recommend choosing VDR providers with granular permissions, audit trail, bulk upload and built-in redaction. Properly configured permissions and access in the virtual room reduce the risk of leaks and limit visibility of individual folders until signing the Term Sheet or obtaining antitrust clearances.

Redaction protocols and the clean team approach help share commercially sensitive data (pricing models, source code, personal data) without violating antitrust and GDPR requirements. Staged disclosure and a rolling data room strategy allow publishing materials in waves: first a high-level package, then deeper dives on Q&A requests. At the same time, pre-emptive disclosures are preferable to hiding risks: early disclosure creates room for solutions rather than escalation.

Data room index structure for VDD

• corporate structure: cap table, beneficial ownership registry, shareholder agreements, restrictions on share transfers, intercompany loans and transactional risks.
• licenses and permits: industry licenses, compliance certificates, regulatory approvals and timing for obtaining them.
• Commercial contracts: key customers/suppliers, assignability, consent, SLA, non-compete, non-solicit.
• Intellectual property: IP assignment agreements, trademarks, patents, open source compliance and software licenses.
• Finance: management reporting, QofE, adjusted EBITDA, working capital target, debt schedule.
• Taxes: tax clearance, transfer pricing documentation, tax audits and correspondence.
• Personnel and HR: employment contracts, TUPE risks, key-man clauses, employee equity plans and vesting on closing.
• Legal disputes: court and arbitration risks, litigation search, litigation finance exposure.
• Compliance: AML risk assessment, KYC procedures, PEPs and sanctions screening methodologies, internal controls and compliance with SOX-like requirements.
• Data and IT security: GDPR DPIA, standard contractual clauses (SCC) for data transfers, IT security audit and cyber due diligence, data breach history and notifications.
• ESG/EHS: environmental due diligence, ESG audit, conflict minerals and supply chains.
• Other liabilities: legacy liabilities, hidden liabilities, product warranty liabilities.

VDD checklist: document package

Vendor due diligence document package rests on three pillars: completeness, relevance and suitability for the SPA. In a basic VDD checklist I include: corporate documents, financial statements, QofE, tax files, key contracts, licenses and permits, IT systems and software, HR documents, compliance and regulatory matters, disputes and claims, information security and GDPR. For a private sale (vendor due diligence for a private sale) I do not simplify the list; private equity investors look just as deeply.

Checklist of commercial and operational documents

• Contracts with key customers and suppliers – I check assignability and consent, terms, termination for convenience, change of control.
• Customer concentration and the risk of churn after the deal – I prepare a mitigation plan and communications.
• SLA and KPI, I check penalties, warranty obligations and conformity with the actual service level.
• Non-compete and non-solicit enforceability: I assess the applicable law and restriction periods.

QofE, adjusted EBITDA and taxes

• QofE – I normalize revenue and margin, exclude one-off items, and adjust for seasonality.
• Adjusted EBITDA: I agree on the methodology, disclose adjustments with examples and supporting documents.
• Working capital target – I calculate it based on LTM/seasonal, and design true-up mechanisms.
• Taxes: I prepare tax clearance, transfer pricing documentation for cross-border deals, analyze tax risks on sale, and reflect tax audits and outcomes.

Legal: SPA, representations, warranties

• SPA checklists – I include price conditions, earn-out mechanics, escrow agreement, indemnity schedule, MAC, covenants up to Closing.
• Disclosure letter – I prepare precise and verifiable disclosures, tying them to the appendices and the data room index.
• Shareholder agreements – I remove transfer restrictions, check ROFR/ROFO and drag/tag provisions.
• Regulatory approvals: I assess the timelines for antitrust and sectoral notifications and include them in the Conditions Precedent.

Tax and compliance block

• AML and KYC requirements in VDD for European investors – I describe identification procedures, beneficial owner and ownership structure, PEPs and sanctions.
• Internal controls and compliance with SOX-like requirements, I perform a gap analysis and a strengthening plan.
• Forensic accounting and fraud detection: I initiate targeted procedures when necessary.
• GDPR DPIA, SCCs, data breach history – I confirm compliance, the existence of notifications and remediation measures.

Software rights: licenses and security

• Preparing software rights and licenses in the VDD package: I record copyrights, IP assignment, third-party licenses.
• Open source compliance: I check licenses (MIT, GPL, etc.), and develop a policy and a BOM (bill of materials).
• IT security audit and cyber due diligence, I run maturity tests, vulnerability assessments, response and backup plans.

HR: employees and retention

• Employment contracts and TUPE risks: I analyze transfer of personnel to the EU/UK, notification periods, collective agreements.
• Key employees – I prepare a retention plan, key-man clauses and bonuses, employee equity plans and vesting at closing.

Drafting the disclosure schedule for Closing

Should disputed litigation matters be included in the disclosure schedule? Yes — if there are probable losses or liabilities, include them with a note on the stage, amount and any reserves. Exceptions are possible only for closed cases without residual risks. Pre-disclosure (pre-release of data) on sensitive disputes via a clean team can be a quick way to allay the buyer’s IC concerns and avoid delaying the SPA.

Registration and licenses for transactions

Due diligence for cross-border transactions in the EU and Asia takes into account transfer pricing documentation, substance in the jurisdiction, the presence of offices and employees, and compliance with economic substance. COREDO’s practice confirms: when licenses and regulatory approvals are digitized and structured, LOI terms become more flexible, and the buyer is more willing to accept a reduced escrow.

GDPR: compliance check, DPIA and SCCs

GDPR compliance check during a company sale is a mandatory component for any business handling data of EU citizens. I include in VDD a DPIA for key processes, a register of processing activities, legal bases, DPAs with processors and cross-border data transfer mechanisms using Standard Contractual Clauses. Incident history (data breach history) and obligations to notify regulators and data subjects are also disclosed with a focus on remediation measures.

Cyber due diligence covers information security audits, network segmentation, access management, vulnerabilities and the patching process. For SaaS and technology companies, VDD best practices include reviewing the SDLC, change control, SOC 2/ISO 27001 statuses and incident logs. Such disclosure reduces exceptions in RWI and strengthens buyer confidence in the technology diligence track.

Sanctions and KYC risks in Asia and the CIS

KYC automation and screening tools are appropriate already at the pre-LOI stage: systematized reports on counterparties, ultimate beneficiaries and supply chains shorten time-to-decision. COREDO’s practice confirms that early verification reduces the likelihood of “red flags” in the final phase and reduces the volume of conditions in the Conditions Precedent.

COREDO Cases: Accelerating Closing (VDD)

Case 1: VDD for a private equity investor in the sale of an Estonian SaaS company to the United Kingdom. The COREDO team performed QofE, normalized revenue, identified dependency on two clients and prepared a mitigation plan by implementing staged renewal. Thanks to pre-emptive disclosures the PE investment committee removed the 10% escrow requirement, limiting it to 4% and an RWI policy. Closing took place three weeks earlier than the original timeline.

Case 2: A payment provider in Singapore serving the EU market. We prepared the licensing package and AML risk assessment, reviewed SCCs and DPIA, and established redaction protocols for tariffs and the client portfolio. Pre-disclosure of metrics through a clean team accelerated RWI underwriting. The result – a 50% reduction in holdback and no adjustments to adjusted EBITDA at the SPA stage.

Case 3: A manufacturing group in Slovakia with deliveries to Asia. We conducted an ESG audit, included environmental due diligence (EHS) and conflict minerals compliance in the supply chain. Additionally, we checked litigation search and legacy liabilities. The buyer waived the requirement for an additional indemnity basket, limiting it to a threshold (threshold), as the disclosures covered the key risks and a transparent data room structure for VDD was provided.

Cost, ROI and VDD metrics

The cost of vendor due diligence and the assessment of profitability: it’s not only a question of budgets, but also the effect on SPA terms. I calculate ROI from VDD by three metrics: reduction of escrow/holdback, speed of closing and the price delta from removing discounting factors (for example, uncertainties around IP or taxes). In COREDO cases, savings on time and holdbacks often exceed the direct costs of VDD by 3–5 times.

The cost‑benefit analysis of vendor due diligence also accounts for secondary effects: fewer requests in Q&A, lower management burden, fewer distractions from the P&L. Metrics for assessing ROI from VDD include: the number of SPA amendment rounds, duration of underwriting RWI, the number of exceptions in the disclosure letter, buyer time-to-IC and the speed of obtaining regulatory approvals.

Deal management: PMO and deliverables

Project Management Office (PMO) for a deal – a discipline without which even a perfect VDD stalls. At COREDO the PMO controls the critical path: VDD publication deadlines, request statuses, approvals of internal and external advisors. Deal accelerators: pre-contractual arrangements on the Q&A format, SLAs for responses, and a unified document taxonomy.

I prepare the post-closing integration checklist in parallel with the SPA: corporate and IT changes, employee transfers, banks and payments, license updates, notifications to counterparties. Closing deliverables and the timeline for documents, certificates, resignations, bank confirmations, escrow agreement, tax clearances – I publish in a separate folder in the data room. This approach helps avoid “loose ends” and speeds up the actual transition to integration.

Vendor due diligence quickly and without losses

How to prepare vendor due diligence in 8–10 weeks? Form a PMO, fix the VDD checklist, launch a data remediation plan and OCR tools for mass digitization, appoint section owners and days in the calendar for review. The solution developed at COREDO,, index templates, disclosure schedule and vendor due diligence report template that save weeks on structuring.

How to speed up Closing of the deal? Provide in the LOI a clear timetable, agree on mechanics of escrow and holdback versus escrow: a comparative analysis will allow choosing the optimal instrument for the risks. Prepare underwriting RWI: criteria and package, build vendor-friendly disclosure drafting, agree the working capital target before the SPA and publish the structure of the commercial data room to accelerate closing.

Comprehensive preparation for sale

A good vendor due diligence is not bureaucracy but a tool that increases the price, shortens timelines and reduces stress for owners. When the seller offers a structured VDD, the investor evaluates the asset rather than getting bogged down in “data archaeology”. This is the approach I cultivate at COREDO: a clear methodology, predictable processes and practical solutions at the intersection of law, finance, AML and regulatory matters.

COREDO operates in the EU, the UK, Singapore and Dubai, and also supports deals with companies in the Czech Republic, Slovakia, Cyprus and Estonia. We combine pre-sale legal preparation, Licensing (crypto, payments, forex, banking authorizations), AML consulting, sanction risk control and project management. If you are thinking about selling your business or attracting an investor, send a request for the VDD checklist and a report template: I will help adapt them to your jurisdiction and deal strategy to accelerate Closing and preserve maximum value.