Signing a Letter of Intent can feel like the major milestone in selling a business. In many transactions, however, it marks the beginning of one of the most detailed phases of the process: due diligence.
Due diligence is the buyer’s process of investigating the business to verify its financial performance, legal position, operations, customers, employees, contracts, assets, and potential liabilities.
For sellers, the process can feel extensive. Buyers and their advisors may request years of financial information, contracts, customer data, employee records, tax documents, and operational details.
The purpose is not simply to find problems. The buyer is trying to confirm that the business being purchased is substantially the business that was represented during the sale process—and understand the risks associated with owning it.
What Happens During Due Diligence?
During due diligence, the buyer and its advisors systematically review the company’s financial, legal, operational, commercial, and human resources information before completing the acquisition.
The scope varies by transaction, but most comprehensive processes include some combination of:
- Financial and tax review
- Legal review
- Customer and revenue analysis
- Employee and HR review
- Contract review
- Operational review
- Intellectual property and technology
- Insurance
- Real estate and equipment
- Regulatory matters
The buyer may also conduct management interviews and request follow-up information as questions arise.
What Does Financial Due Diligence Examine?
Financial due diligence focuses on whether the company’s reported revenue, expenses, earnings, assets, liabilities, and cash flow accurately reflect the underlying business.
Buyers commonly request:
- Historical financial statements
- Monthly financial statements
- General ledgers
- Tax returns
- Bank statements
- Accounts receivable and payable aging
- Revenue by customer
- Gross margin information
- Debt schedules
- Capital expenditures
- Owner compensation and benefits
- Related-party transactions
The buyer may also conduct a quality of earnings analysis to evaluate how much of the company’s reported earnings are recurring and sustainable.
The question is not simply whether the numbers are accurate. It is whether the earnings being purchased are likely to continue after the transaction.
What Does Legal Due Diligence Examine?
Legal due diligence identifies the company’s legal obligations, ownership rights, disputes, contracts, and potential liabilities.
The buyer’s attorneys may review:
- Corporate and organizational documents
- Ownership records
- Litigation and threatened claims
- Licenses and permits
- Material contracts
- Leases
- Financing agreements
- Employment agreements
- Intellectual property
- Insurance
- Regulatory matters
Even relatively old or inactive matters may become relevant if they create potential liability for the buyer.
This is one reason sellers benefit from identifying and addressing known legal issues before a buyer begins its review.
How Are Customers Reviewed During Due Diligence?
Buyers examine customer relationships to determine how durable, profitable, and transferable the company’s revenue is.
Customer diligence may include:
- Top customers by revenue
- Customer concentration
- Customer retention
- Customer tenure
- Revenue trends
- Recurring versus non-recurring revenue
- Customer contracts
- Backlog
- Pricing
- Customer churn
The buyer will also consider whether major customer relationships depend on the current owner.
A business may have strong historical revenue but still present transition risk if its largest accounts are personally tied to the seller.
What Happens During Employee and HR Due Diligence?
Employee diligence examines the company’s workforce, compensation, benefits, key employees, and potential employment-related liabilities.
The buyer may request:
- Employee lists
- Organizational charts
- Compensation information
- Employment agreements
- Bonus arrangements
- Benefits
- Payroll information
- Retirement plans
- Independent contractor agreements
- Employee claims or disputes
- Turnover information
Key employees receive particular attention because the buyer needs to understand whether the business can continue operating effectively after the owner’s departure.
A strong management team can reduce transition risk. Conversely, a business heavily dependent on the owner or a handful of employees may require additional planning.
How Are Contracts Reviewed?
Contract diligence determines which important agreements will continue after closing and whether the transaction itself affects those agreements.
Buyers and their attorneys may examine contracts with:
- Customers
- Suppliers
- Vendors
- Employees
- Independent contractors
- Landlords
- Lenders
- Technology providers
- Strategic partners
Particular attention may be paid to:
- Assignment provisions
- Change-of-control clauses
- Termination rights
- Renewal terms
- Pricing
- Exclusivity
- Minimum purchase commitments
- Guarantees
- Default provisions
A critical issue is whether a major customer or supplier can terminate or renegotiate an agreement because of the ownership change.
What Does Operational Due Diligence Cover?
Operational due diligence examines how the business functions and whether its systems, processes, facilities, equipment, and resources can support continued performance.
A buyer may evaluate:
- Operating procedures
- Production processes
- Inventory
- Equipment
- Facilities
- Vendors
- Supply chain
- Technology
- Cybersecurity
- Quality control
- Maintenance
- Capacity
The buyer is looking for risks that may not be visible in the financial statements.
For example, a company may report strong earnings while relying on aging equipment that will require significant capital investment shortly after closing.
What Happens If the Buyer Finds a Problem?
A problem discovered during due diligence does not automatically kill a transaction. Its impact depends on the nature and significance of the issue.
Possible outcomes include:
- The buyer accepts the issue.
- The seller resolves it before closing.
- The parties negotiate a purchase price adjustment.
- The buyer requests an escrow or holdback.
- The issue becomes subject to additional contractual protections.
- The parties renegotiate certain terms.
- In serious cases, the buyer decides not to proceed.
This is why sellers should view diligence as more than a document request.
What the buyer discovers can affect both valuation and deal structure.
Why Does Due Diligence Generate So Many Questions?
Follow-up questions are a normal part of the process.
A buyer may review one document, identify something that requires clarification, and then request additional information.
For example, a financial statement may lead to a question about an unusual expense. That question may lead to a general ledger review, supporting documentation, and another explanation.
The volume of questions does not necessarily mean the buyer has lost confidence in the business.
It often means the buyer is doing exactly what it should be doing: understanding the company well enough to assess the risks of the acquisition.
How Long Does Due Diligence Take?
Due diligence can take several weeks to several months, depending on the size, complexity, and preparedness of the business.
Factors that can lengthen the process include:
- Multiple entities or locations
- Complex contracts
- Significant customer concentration
- Large employee bases
- International operations
- Regulatory requirements
- Litigation
- Complicated tax matters
- Incomplete records
- Multiple financing arrangements
Seller preparation can have a meaningful effect on the timeline.
A well-organized data room and clear process for responding to requests can prevent unnecessary delays.
What Is a Virtual Data Room?
A virtual data room is a secure online environment where sellers organize and provide transaction documents to the buyer and its advisors.
Typical categories include:
- Corporate records
- Financial information
- Tax
- Customers
- Suppliers
- Employees
- Contracts
- Legal matters
- Real estate
- Equipment
- Insurance
- Intellectual property
- Technology
A well-organized data room does more than save time. It can also demonstrate that the company is professionally managed and that its information is reliable and accessible.
Should Sellers Conduct Their Own Due Diligence?
Yes. Sellers can benefit significantly from conducting a pre-sale review before a buyer begins formal diligence.
This process allows the owner and advisors to identify issues while there is still time to address them.
Areas to review include:
- Financial records
- Tax matters
- Material contracts
- Customer concentration
- Employee agreements
- Legal issues
- Intellectual property
- Owner dependencies
- Operational processes
- Insurance
- Real estate
- Equipment
The objective is not to create a perfect business.
It is to identify potential problems early enough to determine whether they should be fixed, documented, disclosed, or incorporated into the transaction strategy.
What Can Sellers Do to Prepare for Due Diligence?
A practical preparation process includes:
- Organize financial records and make sure reported results are supported.
- Review material contracts for assignment and change-of-control provisions.
- Analyze customer concentration and the durability of major relationships.
- Identify owner and key employee dependencies.
- Resolve known legal or operational issues where practical.
- Document critical business processes.
- Organize the data room before it is needed.
- Establish a consistent process for responding to buyer questions.
The earlier this work begins, the more options the seller has.
The Bottom Line: Due Diligence Should Not Be a Surprise
Due diligence gives a buyer the opportunity to verify the business and understand the risks associated with acquiring it.
For sellers, the process is much easier when potential issues have already been identified, financial information is organized, contracts have been reviewed, and important business relationships and processes are documented.
The strongest sellers do not wait for a buyer to discover their weaknesses. They identify those issues themselves and decide how to address them before entering the market.
Preparing for due diligence can also improve the business itself. Better financial reporting, stronger management depth, documented processes, diversified customers, and organized contracts all contribute to a company that is easier to operate—and easier to transfer.
At George & Company, understanding the factors that influence value and transaction risk is an important part of preparing privately held business owners for a successful transition. The earlier an owner begins preparing, the more opportunities there are to address issues before they become negotiating points.