A company due diligence checklist provides a systematic process for investigating a business before making an important decision. It helps researchers verify the company’s identity, ownership, leadership, finances, operations, legal position, customers, competitors, risks, and future opportunities.
Due diligence may be conducted before an investment, acquisition, partnership, supplier agreement, major purchase, or other commercial relationship. The depth of the investigation depends on the value of the proposed transaction, the company’s industry, and the level of risk involved.
For a wider research process, begin with our complete guide to building a research dossier for a target company. It explains how to collect, verify, organize, and analyze company information before reaching a conclusion.
What Is Company Due Diligence?
Company due diligence is the process of examining and verifying important information about a business before entering into a transaction or relationship.
Its primary purpose is to confirm that:
- The company exists legally
- Its ownership is understood
- Financial information is reliable
- Important liabilities have been disclosed
- Operations are sustainable
- Contracts and assets are valid
- Legal and regulatory requirements are being followed
- Major business risks are understood
- Claims made by management can be supported
- The proposed transaction makes commercial sense
Due diligence does not guarantee that a business decision will succeed. However, it reduces uncertainty and helps decision-makers recognize problems that may not appear in promotional materials or initial discussions.
Why a Due Diligence Checklist Matters
A company may appear attractive based on its website, sales presentation, or headline financial figures. A detailed investigation may reveal debt obligations, customer dependence, legal disputes, weak contracts, operational problems, or unrealistic growth assumptions.
A checklist helps investigators:
- Maintain a consistent research process
- Avoid overlooking important information
- Request necessary company documents
- Verify management claims
- Identify financial and legal risks
- Recognize missing information
- Record unresolved questions
- Compare several target companies
- Support negotiation and pricing
- Develop an evidence-based recommendation
Researchers conducting a preliminary public-information review can also use the company research checklist to organize findings before confidential documents become available.
Complete Company Due Diligence Checklist
The following framework can be copied into Microsoft Word, Google Docs, Notion, or a spreadsheet. It should be adapted to the transaction, jurisdiction, company size, and industry.
1. Due Diligence Project Information
Start by defining the scope of the investigation.
| Project Field | Information to Record |
|---|---|
| Target company | [Official company name] |
| Official website | [Verified URL] |
| Transaction type | [Investment, acquisition, partnership, or other] |
| Research objective | [Purpose of due diligence] |
| Prepared for | [Client, organization, or team] |
| Prepared by | [Researcher or department] |
| Review period | [Start and completion dates] |
| Information cutoff date | [Latest date covered] |
| Geographic scope | [Relevant locations] |
| Confidentiality level | [Public, internal, or confidential] |
| Known limitations | [Missing documents or restricted access] |
Define the Objective and Materiality
Materiality determines which findings are important enough to affect the decision. A small issue may be insignificant in a major acquisition but critical in a smaller transaction.
Define:
- The proposed transaction
- Expected transaction value
- Main reasons for the transaction
- Key assumptions
- Acceptable risk level
- Information required
- Areas needing specialist review
- Conditions that could end the transaction
2. Company Identity and Corporate Information
Confirm that the business exists legally and that its corporate information is accurate.
- Verify the official legal name
- Verify trading and brand names
- Confirm the registered address
- Record the registration number
- Confirm the date of incorporation
- Identify the legal structure
- Review incorporation documents
- Review articles of association
- Confirm the current operating status
- Identify all previous company names
- Identify the parent company
- Identify subsidiaries
- Identify joint ventures
- Review organizational charts
- Confirm all operating locations
- Identify jurisdictions where the company operates
- Review required licenses and permits
- Confirm that licenses remain valid
Corporate Verification Table
| Corporate Detail | Company Claim | Verified Finding | Source | Status |
|---|---|---|---|---|
| Legal name | [Claim] | [Finding] | [Source] | [Confirmed/Pending] |
| Registration | [Claim] | [Finding] | [Source] | [Confirmed/Pending] |
| Ownership | [Claim] | [Finding] | [Source] | [Confirmed/Pending] |
| Legal status | [Claim] | [Finding] | [Source] | [Confirmed/Pending] |
Match the company name, registration number, official address, website, and legal documents to avoid investigating the wrong entity.
3. Ownership and Capital Structure
Determine who owns and controls the company.
- Obtain the current shareholder register
- Identify founders and original owners
- Record all major shareholders
- Confirm ownership percentages
- Identify beneficial owners
- Review different share classes
- Review shareholder voting rights
- Identify outstanding options or warrants
- Review previous funding rounds
- Identify institutional investors
- Review shareholder agreements
- Identify ownership restrictions
- Review dividend rights
- Check for pledged shares
- Identify recent ownership changes
- Review planned equity issuances
- Confirm ownership of subsidiaries
Unissued shares, conversion rights, or employee options may affect future ownership percentages and should be included in the analysis.
4. Leadership and Governance Review
Evaluate the experience, stability, authority, and governance practices of the leadership team.
- Identify directors and board members
- Identify senior executives
- Review executive experience
- Confirm appointment dates
- Review executive responsibilities
- Identify related-party relationships
- Review board meeting records where available
- Examine decision-making authority
- Review governance policies
- Identify recent executive departures
- Review management succession planning
- Identify key-person dependence
- Review executive compensation
- Review conflicts of interest
- Confirm required background checks
- Review management references where appropriate
| Person | Position | Experience | Ownership Interest | Key Concern |
|---|---|---|---|---|
| [Name] | [Role] | [Experience] | [%] | [Concern] |
| [Name] | [Role] | [Experience] | [%] | [Concern] |
A broader target company analysis template can help evaluate how leadership quality connects with financial, operational, and competitive performance.
5. Financial Due Diligence
Financial due diligence tests whether the reported figures are complete, consistent, and sustainable.
Financial Documents to Request
- Audited financial statements
- Management accounts
- Income statements
- Balance sheets
- Cash-flow statements
- Bank statements
- Tax returns
- Revenue breakdowns
- Expense breakdowns
- Accounts receivable reports
- Accounts payable reports
- Debt schedules
- Capital expenditure records
- Financial forecasts
- Current budgets
- Previous audit reports
Financial Performance Review
- Verify annual revenue
- Review revenue growth
- Examine recurring and one-time revenue
- Identify major revenue sources
- Review gross profit
- Calculate profit margins
- Review operating expenses
- Identify unusual expenses
- Review net income
- Analyze cash flow
- Examine working capital
- Identify seasonal performance
- Compare actual results with forecasts
- Review accounting policies
- Investigate significant financial adjustments
Financial Comparison Table
| Financial Metric | Current Period | Previous Period | Change | Concern |
|---|---|---|---|---|
| Revenue | [Amount] | [Amount] | [%] | [Finding] |
| Gross profit | [Amount] | [Amount] | [%] | [Finding] |
| Operating profit | [Amount] | [Amount] | [%] | [Finding] |
| Cash flow | [Amount] | [Amount] | [%] | [Finding] |
| Debt | [Amount] | [Amount] | [%] | [Finding] |
Check that all financial figures use the same currency and accounting period.
6. Debt and Financial Obligations
A company may have liabilities that are not obvious from basic profit and revenue figures.
- List all outstanding loans
- Identify lenders
- Review loan agreements
- Record interest rates
- Review repayment schedules
- Identify secured assets
- Review financial covenants
- Check for covenant breaches
- Identify unpaid taxes
- Review overdue supplier payments
- Identify lease obligations
- Review pension obligations
- Identify guarantees provided
- Review contingent liabilities
- Identify off-balance-sheet obligations
- Check for penalties or late fees
Determine whether the company can meet its obligations under realistic revenue and cash-flow assumptions.
7. Tax Due Diligence
Tax review should normally involve a qualified tax professional familiar with the relevant jurisdiction.
- Review corporate tax returns
- Confirm tax registration
- Review sales or value-added tax records
- Examine payroll tax compliance
- Review withholding tax
- Identify unpaid tax obligations
- Review ongoing tax audits
- Identify previous tax disputes
- Review deferred tax assets and liabilities
- Examine cross-border tax exposure
- Review transfer-pricing arrangements
- Confirm tax incentives
- Evaluate the validity of tax losses
- Review correspondence with tax authorities
Unresolved tax issues may create financial liabilities after the transaction.
8. Products and Services Review
Examine what the company sells, who purchases it, and whether the offerings remain commercially viable.
- List all products and services
- Identify flagship offerings
- Review product pricing
- Calculate revenue by product
- Identify product margins
- Review product development plans
- Identify discontinued products
- Review warranties and guarantees
- Examine return and refund rates
- Review quality standards
- Identify product certifications
- Review customer complaints
- Examine product liability exposure
- Identify dependence on individual products
- Review future product launches
Product Portfolio Table
| Product | Revenue Contribution | Profitability | Life-Cycle Stage | Main Risk |
|---|---|---|---|---|
| [Product] | [%] | [Finding] | [Stage] | [Risk] |
| [Product] | [%] | [Finding] | [Stage] | [Risk] |
9. Business Model Assessment
Determine how the company creates value and earns money.
- Define the value proposition
- Identify primary customer groups
- Verify revenue streams
- Review the pricing model
- Calculate recurring revenue
- Identify sales channels
- Review distribution arrangements
- Identify critical partners
- Identify important suppliers
- Analyze customer acquisition costs
- Review customer lifetime value
- Examine the main operating costs
- Evaluate scalability
- Identify revenue concentration
- Test key business assumptions
Assess whether the business model can remain profitable if customer demand, supplier prices, competition, or economic conditions change.
10. Customers and Revenue Quality
Customer due diligence determines whether revenue is dependable and diversified.
- Identify the largest customers
- Calculate revenue concentration
- Review major customer contracts
- Confirm contract duration
- Review renewal and cancellation clauses
- Examine customer retention
- Review customer acquisition trends
- Identify overdue customer payments
- Examine customer complaints
- Review refund rates
- Identify lost customers
- Understand reasons for customer departure
- Verify customer references where permitted
- Review expected future orders
- Identify related-party customers
Customer Concentration Table
| Customer | Revenue Share | Contract End Date | Payment Status | Risk Level |
|---|---|---|---|---|
| [Customer] | [%] | [Date] | [Status] | [High/Medium/Low] |
| [Customer] | [%] | [Date] | [Status] | [High/Medium/Low] |
Heavy dependence on one or two customers may create significant financial risk.
11. Sales and Marketing Review
Evaluate how the company attracts customers and whether its sales process is sustainable.
- Review the sales strategy
- Examine the sales pipeline
- Review conversion rates
- Identify primary sales channels
- Examine sales-team performance
- Review commission structures
- Evaluate marketing channels
- Review advertising expenses
- Calculate customer acquisition costs
- Examine website performance
- Review search visibility
- Examine social media activity
- Review brand positioning
- Identify marketing partnerships
- Review promotional claims
- Confirm compliance with advertising rules
Traffic and search metrics from third-party platforms should be labelled as estimates.
12. Operations and Supply Chain
Operational due diligence examines whether the business can deliver its products or services consistently.
- Map the operating process
- Identify critical business functions
- Review production capacity
- Review quality-control procedures
- Examine inventory records
- Identify obsolete inventory
- Review delivery performance
- Identify major suppliers
- Review supplier contracts
- Examine supplier concentration
- Identify alternative suppliers
- Review logistics arrangements
- Examine business continuity plans
- Identify operational bottlenecks
- Review health and safety compliance
- Examine environmental requirements
| Operational Area | Current Condition | Main Concern | Risk Level |
|---|---|---|---|
| Production | [Finding] | [Concern] | [Level] |
| Supply chain | [Finding] | [Concern] | [Level] |
| Inventory | [Finding] | [Concern] | [Level] |
| Distribution | [Finding] | [Concern] | [Level] |
13. Employee and Human Resources Review
Employees may represent both an important company asset and a significant source of legal or operational obligations.
- Obtain an employee list
- Review employment contracts
- Identify key employees
- Review compensation
- Examine bonus arrangements
- Review benefits
- Identify contractors
- Verify contractor classification
- Review employee turnover
- Examine current vacancies
- Review workplace policies
- Identify unresolved complaints
- Review disciplinary matters
- Examine training requirements
- Review confidentiality agreements
- Review non-compete terms where legally applicable
- Examine pension obligations
- Identify expected leadership departures
Employee records should be handled lawfully and only relevant information should be reviewed.
14. Legal Due Diligence
Legal due diligence should be performed or reviewed by qualified legal professionals.
Corporate and Contract Review
- Review incorporation documents
- Review shareholder agreements
- Review major customer contracts
- Review supplier contracts
- Review partnership agreements
- Review loan agreements
- Review leases
- Review licensing agreements
- Identify change-of-control clauses
- Review termination rights
- Identify unusual contractual obligations
- Confirm authorized signatures
Disputes and Claims
- Identify current lawsuits
- Review threatened legal claims
- Examine previous disputes
- Review settlement agreements
- Identify regulatory investigations
- Review customer claims
- Review employee disputes
- Identify intellectual property disputes
- Estimate possible financial exposure
15. Regulatory and Compliance Review
Requirements vary by industry and jurisdiction.
- Identify applicable laws
- Review industry regulations
- Confirm required licenses
- Review regulatory filings
- Examine compliance policies
- Review previous compliance violations
- Identify ongoing investigations
- Examine anti-bribery controls
- Review anti-money-laundering obligations where applicable
- Examine sanctions compliance where applicable
- Review consumer-protection compliance
- Check advertising compliance
- Review records-retention policies
- Confirm employee compliance training
- Identify upcoming regulatory changes
Do not assume that previous compliance proves current compliance. Check the latest licensing, filing, and regulatory status.
16. Intellectual Property Review
Confirm that the company owns or has valid permission to use the intellectual property required for its operations.
- Identify registered trademarks
- Identify patents
- Review copyright ownership
- Identify domain names
- Review software ownership
- Review licensing agreements
- Confirm employee invention assignments
- Confirm contractor intellectual-property assignments
- Identify open-source software obligations
- Review pending applications
- Examine infringement claims
- Confirm renewal dates
- Review intellectual-property restrictions
- Identify assets not formally registered
| Asset | Owner | Registration Status | Expiry Date | Concern |
|---|---|---|---|---|
| [Asset] | [Owner] | [Status] | [Date] | [Concern] |
17. Technology and Cybersecurity Review
Technology due diligence examines the reliability, ownership, security, and scalability of the company’s systems.
- Create an inventory of major systems
- Identify technology ownership
- Review software licenses
- Examine system architecture
- Review hosting arrangements
- Assess system scalability
- Review backup procedures
- Review disaster recovery
- Examine access controls
- Review cybersecurity policies
- Identify previous security incidents
- Review vulnerability testing
- Examine data encryption
- Identify unsupported software
- Review technology-related contracts
- Estimate future technology investment
18. Data Privacy Review
Data privacy requirements depend on the company’s location, customers, and industry.
- Identify personal data collected
- Determine why the data is collected
- Review the privacy policy
- Review consent procedures
- Examine data-retention practices
- Identify third-party data processors
- Review data-processing agreements
- Examine cross-border data transfers
- Review customer data requests
- Identify previous data breaches
- Review breach-response procedures
- Confirm employee privacy training
- Review deletion procedures
- Identify regulatory complaints
19. Property and Physical Assets
Verify ownership, condition, and obligations connected to material assets.
- List owned property
- Review property ownership documents
- List leased property
- Review lease agreements
- Inspect important facilities
- Review equipment records
- Verify asset values
- Identify secured assets
- Review maintenance records
- Identify damaged or obsolete assets
- Review vehicle ownership
- Examine insurance coverage
- Identify environmental liabilities
- Review planned capital expenditure
20. Insurance Review
Determine whether insurance coverage is appropriate for the company’s activities and risks.
- Review general liability coverage
- Review property insurance
- Review professional liability coverage
- Review product liability coverage
- Review cyber insurance
- Review employee-related coverage
- Review director and officer coverage
- Confirm policy limits
- Confirm renewal dates
- Identify exclusions
- Review previous claims
- Identify uninsured risks
- Confirm payment of premiums
21. Market and Competitor Analysis
Company performance should be evaluated within its competitive environment.
- Estimate market size
- Review industry growth
- Identify demand trends
- Identify direct competitors
- Identify indirect competitors
- Compare products
- Compare pricing
- Compare customer groups
- Compare geographic reach
- Compare market positioning
- Compare customer reputation
- Identify barriers to entry
- Review competitor developments
- Identify substitute products
- Assess the company’s market position
Use the detailed competitor analysis template to compare the target company with its leading competitors using consistent criteria.
22. Strengths, Weaknesses, Opportunities and Threats
Combine the collected findings into a strategic overview.
| Strengths | Weaknesses |
|---|---|
| [Evidence-supported advantage] | [Evidence-supported limitation] |
| [Evidence-supported advantage] | [Evidence-supported limitation] |
| Opportunities | Threats |
|---|---|
| [Evidence-supported opportunity] | [Evidence-supported threat] |
| [Evidence-supported opportunity] | [Evidence-supported threat] |
A complete SWOT analysis template can help organize and prioritize these internal and external factors.
23. Red-Flag Review
Red flags are findings that may require further investigation, negotiation, protection in the final agreement, or withdrawal from the proposed transaction.
Potential red flags include:
- Unverifiable ownership
- Incomplete financial records
- Unexplained revenue changes
- Persistent negative cash flow
- Excessive debt
- Unpaid taxes
- Major customer dependence
- Supplier concentration
- Invalid licenses
- Unresolved lawsuits
- Intellectual-property ownership disputes
- Weak employment agreements
- Undisclosed related-party transactions
- Data-security incidents
- Regulatory violations
- Conflicting management claims
- Missing contracts
- Unrealistic financial forecasts
Red-Flag Register
| Red Flag | Evidence | Potential Impact | Required Action | Status |
|---|---|---|---|---|
| [Issue] | [Evidence] | High | [Action] | Open |
| [Issue] | [Evidence] | Medium | [Action] | Pending |
| [Issue] | [Evidence] | Low | [Action] | Resolved |
An unexplained missing document can itself be a concern, especially when it relates to ownership, finances, contracts, or legal obligations.
24. Due Diligence Risk Matrix
Evaluate risks using consistent criteria.
| Risk | Category | Likelihood | Impact | Priority | Proposed Response |
|---|---|---|---|---|---|
| [Risk] | Financial | High | High | Critical | [Response] |
| [Risk] | Legal | Medium | High | High | [Response] |
| [Risk] | Operational | Medium | Medium | Medium | [Response] |
| [Risk] | Market | Low | Medium | Low | [Response] |
Suggested priority levels:
- Critical: Could prevent the transaction
- High: Requires investigation or contractual protection
- Medium: Should be monitored and managed
- Low: Limited impact under current conditions
25. Information Request Tracker
Use a tracker to manage requested documents and unanswered questions.
| Requested Item | Responsible Person | Request Date | Received | Reviewed | Notes |
|---|---|---|---|---|---|
| [Document] | [Name/team] | [Date] | Yes/No | Yes/No | [Notes] |
| [Document] | [Name/team] | [Date] | Yes/No | Yes/No | [Notes] |
Track:
- Documents requested
- Documents received
- Missing information
- Follow-up questions
- Conflicting responses
- Review status
- Responsible reviewer
- Completion deadline
26. Findings and Final Recommendation
The final report should explain how the findings affect the proposed decision.
Key Findings
- [Important verified finding]
- [Important verified finding]
- [Important verified finding]
- [Important verified finding]
Outstanding Issues
- [Unresolved question]
- [Missing document]
- [Issue requiring specialist review]
Possible Recommendations
The final recommendation may be:
- Proceed without major changes
- Proceed with specific conditions
- Renegotiate the proposed terms
- Request additional information
- Introduce contractual protections
- Require identified problems to be resolved
- Delay the decision
- End the proposed transaction
Final Assessment Template
Based on the information reviewed, [company name] presents a [low/moderate/high] overall risk level. Its principal strengths include [strengths], while the most material concerns relate to [risks]. The proposed transaction may [proceed/proceed conditionally/require further review] subject to [conditions]. The recommendation is based on information available as of [date] and should be reconsidered if material facts change.
A professional company research report template can be used to organize the final evidence, analysis, conclusions, and recommendations.
Best Sources for Company Due Diligence
Public research may use:
- Government business registries
- Regulatory filings
- Court records
- Trademark and patent databases
- Official company websites
- Annual reports
- Audited financial statements
- Investor relations documents
- Reputable news publications
- Industry research reports
- Professional business directories
- Official company announcements
Private due diligence may also require:
- Internal financial records
- Bank statements
- Tax documents
- Customer and supplier contracts
- Employment agreements
- Board records
- Insurance policies
- Technology documentation
- Internal compliance records
Confidential information should only be accessed, stored, and shared by authorized individuals.
Common Due Diligence Mistakes
Beginning Without a Clear Scope
An unclear scope produces unnecessary work while important areas may remain unexamined. Define the transaction, materiality, deadlines, and review responsibilities first.
Trusting Management Claims Without Verification
Management information is important, but significant claims should be checked against documents, financial records, contracts, and independent sources.
Reviewing Revenue Without Cash Flow
A company may report growing revenue while experiencing weak cash collection or increasing expenses. Examine profitability, working capital, and cash flow together.
Ignoring Customer Concentration
A profitable company may still be vulnerable if one customer represents a large percentage of revenue.
Overlooking Change-of-Control Clauses
Important contracts may allow customers, suppliers, lenders, or partners to terminate agreements after an acquisition or ownership change.
Failing to Investigate Missing Documents
Missing records may indicate weak organization or an undisclosed issue. Record what was requested, what was received, and what remains unavailable.
Treating Estimates as Verified Facts
Third-party revenue, employee, traffic, and market-share figures may be estimates. Label them clearly and seek original evidence.
Ignoring Recent Information
Leadership, ownership, contracts, debt, legal disputes, and regulatory status can change quickly. Check dates and confirm current information.
Final Due Diligence Quality Checklist
Before completing the review, confirm that:
- The correct legal company was investigated
- Ownership and control were verified
- Financial records were reviewed
- Revenue quality was assessed
- Debt and liabilities were identified
- Tax information was examined
- Major contracts were reviewed
- Legal disputes were identified
- Regulatory requirements were checked
- Intellectual property was verified
- Technology and cybersecurity were assessed
- Employee obligations were reviewed
- Customer and supplier concentration were evaluated
- Market and competitors were analyzed
- Red flags were documented
- Missing information was recorded
- Specialist reviews were completed where necessary
- Conclusions were connected to evidence
- The final recommendation answered the objective
- The information cutoff date was recorded
Frequently Asked Questions
What is a company due diligence checklist?
It is a structured list of documents, questions, and verification tasks used to investigate a company before an investment, acquisition, partnership, or major commercial agreement.
What are the main types of due diligence?
Common types include financial, legal, tax, operational, commercial, human resources, technology, cybersecurity, regulatory, intellectual property, and environmental due diligence.
How long does company due diligence take?
The required time depends on the company’s size, transaction complexity, information quality, and review scope. A preliminary investigation may take days, while a detailed transaction review may require several weeks or longer.
Who performs company due diligence?
The process may involve investors, business analysts, accountants, lawyers, tax specialists, technology experts, cybersecurity professionals, and industry consultants.
What is the difference between company research and due diligence?
Company research develops a general understanding of a business. Due diligence is usually more detailed and decision-specific, often involving confidential documents, specialist reviews, and verification of material liabilities.
Can due diligence be performed using public information?
Public information can support preliminary due diligence, but it may not reveal confidential contracts, complete financial records, tax exposure, internal disputes, or operational problems.
What is a due diligence red flag?
A red flag is a finding that may materially affect the transaction. Examples include undisclosed debt, missing financial records, ownership disputes, invalid licenses, major litigation, or customer concentration.
Should every checklist item be completed?
Not every item applies to every transaction. The checklist should be adjusted according to the company, industry, jurisdiction, transaction value, and identified risks.
Is professional review necessary?
Major financial, legal, tax, cybersecurity, or acquisition decisions should be reviewed by qualified professionals in the relevant jurisdiction and field.
Final Thoughts
A company due diligence checklist creates a disciplined process for examining a business before an important commercial decision. It helps investigators verify company claims, identify material liabilities, organize outstanding questions, and understand whether the expected benefits justify the risks.
The quality of due diligence depends on the reliability of the evidence and the completeness of the review. Record missing information, challenge unsupported assumptions, and ensure that every important conclusion can be traced to credible documents or verified sources.