Due Diligence Checklist Template
Hand-drafted due diligence checklist template for 2026 — covers all seven core DD areas: legal, financial, commercial, IP, technology, HR and tax. Suitable for M&A, investment rounds and acquisition targets. Includes data-room structure, request lists, finding tracker and red-flag framework. Download today as PDF, Word, Excel or Google Sheets.
Download Template See what’s inside →Quick answer. A due diligence checklist template is a structured request list used to investigate a target company before an acquisition, investment or major transaction. It covers seven core areas: legal, financial, commercial, IP, technology, HR and tax. The checklist drives the data room contents, the workstream assignments, and the final DD report. Used in M&A, VC investment rounds, and acquisitions. Download as PDF, Word, Excel or Google Sheets.
What is Due Diligence?
Due diligence is the comprehensive investigation and analysis process conducted by potential buyers, investors, or partners to evaluate a business, investment opportunity, or transaction before making a commitment. It involves systematic examination of all material aspects of the target company including financials, operations, legal matters, market position, and risks.
Due diligence serves as a critical risk management tool that helps buyers make informed decisions, validate assumptions, identify potential issues, and negotiate appropriate deal terms. It provides the foundation for accurate business valuation and helps ensure that all parties understand what they are buying, selling, or investing in.
Key Components of Due Diligence
- Financial due diligence - analyzing financial statements, cash flows, and performance
- Legal due diligence - reviewing contracts, compliance, and legal risks
- Commercial due diligence - evaluating market position and competitive dynamics
- Operational due diligence - assessing processes, systems, and capabilities
- Management due diligence - evaluating leadership team and organizational structure
- Technology due diligence - reviewing IT systems and digital assets
- Environmental due diligence - assessing environmental liabilities and compliance
Types of Due Diligence by Transaction
| Transaction Type | Focus Areas | Timeline | Key Stakeholders |
|---|---|---|---|
| M&A Transactions | Comprehensive review of all business aspects | 60-120 days | Investment bankers, lawyers, accountants |
| Private Equity Investment | Growth potential, management team, market dynamics | 45-90 days | PE professionals, consultants, specialists |
| Venture Capital Investment | Technology, market size, scalability, team | 30-60 days | VCs, technical experts, market analysts |
| Real Estate Acquisition | Property condition, zoning, environmental issues | 30-45 days | Real estate professionals, inspectors, lawyers |
| IPO Preparation | Financial controls, compliance, governance | 90-180 days | Investment banks, auditors, lawyers |
Industry-Specific Due Diligence
- Technology Companies: IP portfolio, software architecture, cybersecurity, data privacy
- Healthcare/Biotech: Regulatory compliance, clinical trials, FDA approvals, patents
- Manufacturing: Equipment condition, supply chain, environmental compliance, safety
- Financial Services: Regulatory compliance, loan portfolios, risk management
- Retail/Consumer: Brand value, customer data, supply chain, inventory management
- Energy/Utilities: Reserves, environmental liabilities, regulatory approvals
Due Diligence Success Factors
- Early planning and team assembly
- Comprehensive checklist and systematic approach
- Access to qualified professional advisors
- Clear timeline and milestone tracking
- Open communication with target company
- Focus on material issues and deal breakers
What's Inside the Due Diligence Checklist
The checklist is structured the way an M&A lawyer or VC investment team would structure it — seven core areas, each with a defined request list, finding tracker, and red-flag indicator. The Excel and Google Sheets versions include drop-down status fields and traffic-light formatting; the Word and PDF versions are static.
1. Corporate & Legal
- Articles & bylaws / cap table
- Board / shareholder resolutions
- Material contracts & counterparties
- Litigation & regulatory matters
2. Financial & Tax
- Audited accounts (3-5 years)
- Management accounts & forecasts
- Working capital & debt
- Tax filings & transfer pricing
3. Commercial & HR
- Customer contracts & concentration
- Supplier & partner agreements
- Org chart & key employees
- Employment contracts & equity
4. IP, Tech & Regulatory
- Patents, trademarks, copyrights
- Employee & contractor IP assignments
- Technology architecture & security
- Regulatory licences & compliance
All seven workstreams are pre-populated with the standard request items. The Excel version lets each workstream lead update status (Complete / Pending / N/A / Unable to Provide) with conditional formatting, so the deal lead can see progress and gaps at a glance.
The Due Diligence Process — From NDA to Close
Due diligence runs in a defined sequence, with each stage gating the next. The chart below shows the typical timeline for a private-company acquisition or late-stage investment round. Smaller deals compress the stages; cross-border or regulated deals expand them.
The biggest mistake DD teams make is starting confirmatory DD before the term sheet is signed. That wastes effort if headline terms aren't agreed first. Conversely, the biggest mistake target companies make is providing partial information at the initial DD stage and then surfacing material issues during confirmatory DD — that's the kind of thing that kills deal trust.
Financial Due Diligence: Essential Components
Financial Statements Analysis
- Historical Financials: 3-5 years of audited financial statements
- Monthly/Quarterly Reports: Recent interim financial statements
- Management Reports: Internal financial reporting and KPIs
- Budget vs. Actual: Performance against budgets and forecasts
- Working Capital Analysis: Cash conversion cycle and working capital trends
Revenue and Profitability Analysis
- Revenue Recognition: Accounting policies and revenue quality
- Customer Concentration: Top customer analysis and dependencies
- Recurring vs. One-time Revenue: Revenue sustainability assessment
- Margin Analysis: Gross, operating, and net margin trends
- Seasonality and Cyclicality: Business cycle patterns
Cash Flow and Liquidity
- Operating Cash Flow: Cash generation from operations
- Cash Flow After CapEx: Available cash once capital expenditures have been deducted (the FCF measure used in DCF valuations)
- Debt Service Coverage: Ability to service debt obligations
- Liquidity Position: Current liquidity and credit facilities
- Cash Management: Cash conversion and collection practices
Balance Sheet Analysis
- Asset Quality: Valuation and condition of assets
- Debt Structure: Terms, covenants, and maturity profile
- Off-Balance Sheet Items: Leases, guarantees, commitments
- Related Party Transactions: Transactions with affiliates
- Contingent Liabilities: Potential future obligations
Financial Red Flags to Watch
- Declining gross margins or profitability trends
- Significant related party transactions
- Frequent changes in accounting policies
- High customer or supplier concentration
- Deteriorating working capital management
- Significant off-balance sheet liabilities
- Qualified audit opinions or going concern issues
Legal Due Diligence: Critical Areas
Corporate Structure and Governance
- Corporate Documents: Articles of incorporation, bylaws, board resolutions
- Ownership Structure: Capitalization table and shareholder agreements
- Subsidiary Structure: Corporate chart and subsidiary governance
- Corporate Compliance: Good standing certificates and filings
- Board and Committee Structure: Governance policies and procedures
Material Contracts and Agreements
- Customer Contracts: Major customer agreements and terms
- Supplier Agreements: Key vendor and supply contracts
- Employment Agreements: Executive and key employee contracts
- Real Estate Leases: Property leases and real estate holdings
- Financing Agreements: Loan agreements and credit facilities
- Partnership/JV Agreements: Strategic alliances and joint ventures
Intellectual Property Portfolio
- Patents and Trademarks: Registered IP and pending applications
- Copyrights: Software, content, and creative works
- Trade Secrets: Confidential information and know-how
- License Agreements: IP licensing in and out arrangements
- Domain Names: Internet domains and digital assets
Regulatory and Compliance Matters
- Industry Regulations: Sector-specific compliance requirements
- Environmental Compliance: Environmental permits and liabilities
- Data Privacy: GDPR, CCPA, and other privacy regulations
- Employment Law: Labor compliance and workplace policies
- Tax Compliance: Tax filings and potential liabilities
Litigation and Disputes
- Pending Litigation: Current lawsuits and claims
- Threatened Litigation: Potential legal actions
- Insurance Coverage: Liability insurance and coverage gaps
- Regulatory Investigations: Government inquiries and enforcement
- Historical Claims: Past litigation and resolution outcomes
Legal Due Diligence Best Practices
- Engage experienced legal counsel early in the process
- Request comprehensive document production lists
- Focus on material contracts and change of control provisions
- Verify ownership and protection of key intellectual property
- Assess regulatory compliance in all applicable jurisdictions
- Review insurance coverage and potential gaps
How to Use the Due Diligence Checklist: Step-by-Step Guide
Establish: Clear project organization, team structure, and process framework for effective due diligence execution.
- Assemble due diligence team with appropriate expertise
- Define roles, responsibilities, and reporting structure
- Establish timeline, milestones, and deliverable schedule
- Set up secure document sharing and communication systems
- Customize checklist for specific transaction and industry
Collect: Comprehensive document request list and establish systematic organization for efficient review.
- Send detailed document request list to target company
- Establish virtual data room or secure sharing platform
- Organize documents by category and priority
- Track document receipt and identify missing items
- Prioritize review based on materiality and risk
Analyze: Systematic review of financial statements, performance metrics, and financial health indicators.
- Review historical financial statements and audit reports
- Analyze financial performance trends and key metrics
- Validate revenue recognition and accounting policies
- Assess working capital and cash flow patterns
- Evaluate debt structure and financing arrangements
Examine: Legal structure, material contracts, intellectual property, and regulatory compliance matters.
- Review corporate structure and governance documents
- Analyze material contracts and key agreements
- Assess intellectual property portfolio and protections
- Evaluate regulatory compliance and legal risks
- Investigate litigation history and pending matters
Assess: Market dynamics, competitive position, customer relationships, and growth prospects.
- Analyze market size, growth, and competitive landscape
- Evaluate customer base and concentration risks
- Assess product/service portfolio and differentiation
- Review sales and marketing strategies and effectiveness
- Evaluate growth opportunities and strategic initiatives
Document: Comprehensive analysis, key findings, risk assessment, and recommendations for decision-making.
- Compile findings from all workstream areas
- Identify key risks, opportunities, and deal issues
- Prepare executive summary and detailed reports
- Develop recommendations for deal structure and pricing
- Present findings to decision-makers and stakeholders
Critical Success Factors
- Allow adequate time for thorough review and analysis
- Engage qualified professionals with relevant expertise
- Maintain focus on material issues and deal-breakers
- Establish clear communication with target company management
- Document all findings and maintain audit trail
- Consider post-closing integration and operational factors
Commercial Due Diligence: Market and Strategy Analysis
Market Analysis and Sizing
- Total Addressable Market (TAM): Overall market size and potential
- Serviceable Available Market (SAM): Realistic market opportunity
- Market Growth Trends: Historical and projected growth rates
- Market Segmentation: Customer segments and subsectors
- Geographic Markets: Regional market dynamics and opportunities
Competitive Landscape Assessment
- Competitor Identification: Direct and indirect competitors
- Market Share Analysis: Competitive positioning and share trends
- Competitive Advantages: Differentiation and value proposition
- Pricing Analysis: Competitive pricing and value perception
- Competitive Response: Likely competitor reactions to transaction
Customer Analysis and Relationships
- Customer Segmentation: Customer types and characteristics
- Customer Concentration: Dependency risks and relationships
- Customer Satisfaction: Loyalty, retention, and satisfaction metrics
- Sales Process: Sales cycle, conversion rates, and effectiveness
- Customer Acquisition Cost: Marketing efficiency and ROI
Product and Service Portfolio
- Product Analysis: Product lines, features, and lifecycle stage
- Innovation Pipeline: R&D capabilities and new product development
- Technology Platform: Technology stack and scalability
- Service Capabilities: Service delivery and support model
- Quality and Performance: Product quality metrics and customer feedback
Commercial Due Diligence Deliverables
- Market size and growth projections
- Competitive positioning assessment
- Customer satisfaction and retention analysis
- Revenue sustainability evaluation
- Growth opportunity identification
- Strategic recommendations and value creation plans
Technology and IT Due Diligence
Technology Infrastructure Assessment
- IT Architecture: System architecture and technology stack
- Hardware and Software: Equipment condition and software licenses
- Cloud Infrastructure: Cloud services and data management
- Network Security: Cybersecurity measures and data protection
- Scalability: System capacity and growth capability
Software and Applications
- Business Applications: ERP, CRM, and business systems
- Custom Software: Proprietary applications and development
- Integration: System integration and data flow
- Mobile Applications: Mobile platforms and capabilities
- Legacy Systems: Outdated systems and modernization needs
Data Management and Analytics
- Data Assets: Data types, quality, and value
- Data Storage: Databases and data warehousing
- Analytics Capabilities: Business intelligence and reporting
- Data Governance: Data policies and compliance
- Data Privacy: Privacy controls and regulatory compliance
Cybersecurity and Risk Management
- Security Framework: Cybersecurity policies and procedures
- Threat Assessment: Security vulnerabilities and risks
- Incident Response: Security incident history and response capabilities
- Compliance: Regulatory compliance (SOX, GDPR, etc.)
- Insurance Coverage: Cyber liability insurance and coverage
Technology Due Diligence Focus Areas
- System reliability and performance metrics
- Technology debt and modernization requirements
- Integration complexity and post-merger technology plans
- Intellectual property in software and technology
- Vendor dependencies and contract terms
- Disaster recovery and business continuity planning
Due Diligence Timeline and Project Management
Typical Due Diligence Timeline by Deal Size
| Deal Size | Timeline | Key Phases | Critical Path Items |
|---|---|---|---|
| Small Business (<$10M) | 30-45 days | Planning (5 days), Review (25 days), Analysis (10 days) | Financial review, legal clean-up |
| Mid-Market ($10M-$100M) | 45-75 days | Planning (7 days), Review (45 days), Analysis (15 days) | Commercial DD, management presentations |
| Large Corporate (>$100M) | 60-120 days | Planning (10 days), Review (70 days), Analysis (25 days) | Regulatory approvals, integration planning |
Project Management Best Practices
- Team Organization: Clear roles, reporting structure, and communication protocols
- Document Management: Secure data rooms and version control systems
- Progress Tracking: Regular status updates and milestone monitoring
- Risk Management: Early identification and escalation of critical issues
- Quality Control: Review processes and work paper standards
- Communication: Regular updates to stakeholders and decision-makers
⏰ Timeline Success Factors
- Start planning early and assemble team in advance
- Coordinate with target company on document availability
- Prioritize critical path items and deal-breaker issues
- Build buffer time for unexpected complications
- Maintain regular communication with all stakeholders
- Prepare for parallel workstreams and dependencies
Due Diligence Red Flags and Warning Signs
Financial Red Flags
- Revenue Issues: Declining revenues, customer concentration, revenue recognition problems
- Profitability Concerns: Margin compression, unsustainable cost structure, one-time items
- Cash Flow Problems: Negative operating cash flow, working capital deterioration
- Debt Issues: Covenant violations, excessive leverage, maturity mismatches
- Accounting Irregularities: Frequent restatements, related party transactions, audit issues
Operational Red Flags
- Management Issues: High turnover, lack of depth, poor governance
- Customer Problems: Customer complaints, retention issues, service problems
- Operational Inefficiencies: Outdated systems, poor processes, quality issues
- Competitive Disadvantages: Market share loss, technological obsolescence
- Regulatory Issues: Compliance violations, pending investigations
Legal and Compliance Red Flags
- Litigation Risks: Significant pending lawsuits, regulatory investigations
- Contract Issues: Unfavorable terms, change of control provisions, key contract expirations
- IP Problems: Weak IP protection, infringement claims, licensing issues
- Regulatory Violations: Past violations, ongoing compliance issues
- Employment Issues: Labor disputes, discrimination claims, union issues
Deal Breaker Warning Signs
- Material misrepresentations in financial statements
- Undisclosed litigation or regulatory investigations
- Significant environmental liabilities
- Key customer or supplier dependencies at risk
- Fundamental business model or market disruption
- Management integrity or competence concerns
UK vs EU vs US Legal Context
Due diligence is conducted under different legal frameworks across jurisdictions. The substantive process — investigating the target across legal, financial, commercial, IP, tech, HR and tax — is consistent globally, but the regulatory backdrop and disclosure standards vary.
United Kingdom
UK M&A and investment transactions are governed primarily by the Companies Act 2006. Public takeovers are governed by the UK Takeover Code administered by the Takeover Panel. The Competition and Markets Authority (CMA) reviews mergers above defined thresholds. The National Security and Investment Act 2021 requires mandatory notification of acquisitions in 17 sensitive sectors.
European Union
EU M&A is regulated at member-state level for most transactions, with EU-level merger control under the EU Merger Regulation for deals above the threshold. The EU Foreign Direct Investment Screening Regulation coordinates national FDI reviews across member states.
United States
US M&A is governed primarily by Delaware corporate law for the majority of public companies. Antitrust review under the Hart-Scott-Rodino Act requires pre-merger notification for deals above the threshold (currently $119.5 million). Foreign acquisitions of US targets in sensitive sectors are reviewed by CFIUS (Committee on Foreign Investment in the United States). Public deals are governed by the SEC rules on tender offers and proxy disclosures.
Practical drafting
The DD checklist itself is largely jurisdiction-neutral — the categories of information needed are universal. What changes is the regulatory clearances workstream: UK deals add CMA + NSI Act analysis; EU deals add merger regulation analysis; US deals add HSR + CFIUS analysis. The template includes a regulatory clearances section that can be adapted for each jurisdiction.
Due Diligence — Frequently Asked Questions
A due diligence checklist is a structured list of documents, questions and verification items used to investigate a target company before an acquisition, investment or major transaction. It typically covers seven core areas: legal, financial, commercial, intellectual property, technology, human resources, and operational. The checklist drives the data room request list, the workstream assignments, and the final DD report.
Due diligence timelines depend on deal size and complexity. Seed and Series A investment rounds typically run 2-4 weeks. Late-stage VC rounds run 4-8 weeks. M&A transactions for private companies typically run 6-12 weeks for confirmatory DD; complex public-company or cross-border deals can run 3-6 months. Initial 'preliminary' DD before signing a term sheet or LOI is much shorter — often a week or two of high-level review.
The seven main types are: (1) Legal DD — corporate structure, contracts, litigation, regulatory; (2) Financial DD — audited accounts, management accounts, cash flow, debt, working capital; (3) Commercial DD — market, customers, competition, growth drivers; (4) IP DD — patents, trademarks, copyrights, trade secrets, employee IP assignments; (5) Technology DD — architecture, security, scalability, technical debt; (6) HR DD — org chart, key employees, compensation, employment contracts, equity; (7) Tax DD — corporate tax, payroll tax, sales tax, transfer pricing, historical filings.
Due diligence is conducted by specialist teams matched to each workstream. Legal DD is typically done by the buyer's external law firm. Financial and tax DD is usually done by accountants (Big 4 or boutique transaction services teams). Commercial DD often involves consulting firms or in-house corporate development. Technical DD requires technical experts. The buyer's deal team coordinates across all workstreams. Investors typically lead investor-DD on their own funds.
The data room typically contains: corporate documents (incorporation, articles, cap table), board and shareholder resolutions, financial statements (3-5 years), management accounts and forecasts, customer contracts, supplier contracts, employment agreements, IP register and assignment confirmations, real estate leases, insurance policies, regulatory licences, and any litigation correspondence. The checklist below specifies what's needed for each area in detail.
DD costs scale with deal size and complexity. Seed and Series A rounds: typically a few thousand pounds in legal fees and minimal external advisor cost. Late-stage VC: tens of thousands. Mid-market M&A: typically 1-3% of deal value across legal, financial, commercial and tax workstreams. Cross-border M&A and regulated industries can push the cost higher. Buyers usually fund DD; sellers fund their own preparation costs (vendor DD, data room setup).
DD findings translate into one of four outcomes: (1) price adjustment — the issue is reflected in a lower offer or earn-out; (2) indemnity — the seller indemnifies the buyer for specific risks discovered (typically capped and time-limited); (3) condition precedent — the issue must be fixed before closing (e.g. a regulatory licence, an IP assignment, a settled lawsuit); or (4) walk-away — the issue is severe enough to kill the deal. Material undisclosed issues that surface after closing can also trigger warranty claims under the SPA.
Yes. Modern DD is largely remote-first. Data rooms (Datasite, iDeals, Intralinks) handle document review. Video calls handle management presentations and Q&A. Site visits still happen for manufacturing, real estate or operationally complex businesses, but desk-based DD covers most of the work for software, services and digital businesses. Cross-border DD has become significantly easier — which has expanded the M&A market accordingly.
Download the Due Diligence Checklist Template
Our comprehensive due diligence checklist template has been developed by experienced M&A professionals and is used by investment banks, private equity firms, and corporate development teams worldwide. The template includes:
What's Included in the Template
- Comprehensive Checklist: 200+ items across all due diligence areas
- Document Request Lists: Detailed lists for each workstream
- Analysis Templates: Financial and commercial analysis frameworks
- Risk Assessment Tools: Risk identification and evaluation matrices
- Project Management Tools: Timeline templates and tracking sheets
- Report Templates: Executive summary and detailed report formats
How to Customize the Template
- Industry Specific: Add industry-specific requirements and regulations
- Deal Size: Scale the checklist based on transaction complexity
- Geographic: Include jurisdiction-specific legal and tax considerations
- Transaction Type: Modify for M&A, investment, or partnership structures
- Internal Requirements: Add company-specific policies and procedures
Next Steps After Download
- Review and customize the checklist for your specific transaction
- Assemble your due diligence team and assign responsibilities
- Establish timeline and coordinate with target company
- Set up secure document sharing and communication systems
- Begin systematic review using the checklist framework
- Track progress and identify issues for escalation
Note: This template is for informational purposes only and should not be considered as legal, financial, or professional advice. Always consult with qualified professionals for specific transaction guidance.
What founders say about this checklist
Feedback from founders, investors and corporate development teams who have used the due diligence checklist on real M&A and investment transactions.
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Used this for our Series B fundraise. The seven-workstream structure mapped exactly onto what our lead VC's DD team was asking for. Saved us a meaningful chunk of preparation time and the data room came together cleanly.
As a corporate development director, this is the cleanest mid-market DD checklist I've seen. The Excel version with status tracking and conditional formatting is genuinely usable across a deal team.
Adapted this for an asset acquisition. The IP section is particularly thorough — covers everything from registered marks down to employee invention assignments. Wish there was a vendor-DD variant for sell-side prep.
Used for an acqui-hire. The HR DD section captured everything we needed for key-employee retention — equity, change-of-control triggers, non-competes, IP. Saved us from a nasty post-close surprise.
As a founder selling to a strategic, this checklist gave me a head start on what they'd ask for. We pre-built the data room before the buyer's DD team even sent their initial request — impressed them.
Solid foundational checklist. The red-flag section is the standout feature — helped us spot a related-party transaction issue early in DD that was material to deal pricing.
Related Legal Templates
Due diligence rarely sits on its own — it's part of a wider M&A and investment workflow. Here are the templates founders, investors and acquirers typically pair with this checklist.
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Investment Term Sheet
The non-binding outline of investment terms. Typically negotiated alongside or just before confirmatory DD — gates the move from preliminary to full DD.
View term sheet template →Letter of Intent
The non-binding outline used in M&A transactions. Usually signed after preliminary DD and before confirmatory DD — sets price, exclusivity and timeline.
View LOI template →Confidentiality Agreement (NDA)
Mandatory before any DD information is shared. The data room access is gated by the NDA and the NDA survives the DD process for a defined period.
View NDA template →Investment Agreement
The definitive contract for an investment round. DD findings translate directly into representations, warranties, indemnities and conditions precedent in this document.
View investment agreement template →Asset Purchase Agreement
The definitive contract for asset acquisitions. DD findings drive the warranty schedule, the disclosure letter, and any specific indemnities for issues discovered.
View APA template →Stock Purchase Agreement
The definitive contract for share acquisitions. Used in private M&A where the entire company is being acquired by share transfer rather than asset purchase.
View SPA template →Equity Purchase Agreement
The contract for purchasing equity stakes in a company — the standard format for private equity and growth-stage investments where DD has been completed.
View equity purchase template →Shareholder Agreement
Reviewed during DD as part of corporate governance. Often updated post-deal to add new investor protections, board seats, and information rights surfaced during DD.
View shareholder agreement template →