DUE DILIGENCE GUIDE
Selling a Business Due Diligence Checklist
A selling a business due diligence checklist helps owners prepare the evidence buyers will review before confirming price, structure and completion.
This guide explains the financial, commercial, legal, operational, staff and tax records that should be organised before due diligence begins.
What Is Due Diligence When Selling a Business?
Due diligence is the buyer’s detailed review of the business. The buyer is checking whether the financial results, risks, contracts, staff, customers, operations and legal position match the sale story.
Financial Review
Buyers test earnings, add-backs, working capital, debt, margins and tax records.
Commercial Review
Buyers examine customers, suppliers, competition, pricing and growth opportunities.
Operational Review
Buyers assess staff, systems, assets, contracts, compliance and transfer risk.
CONFIDENTIAL VALUATION
Prepare Before Buyers Start Testing the Business
A confidential valuation and document review can help identify due diligence gaps before buyers use them to renegotiate.
Get My Free Business ValuationDue Diligence Checklist
Use this checklist as a practical starting point. The exact evidence needed will depend on the business, buyer type, industry, location and deal structure.
Financial and Legal
- Accounts and tax returns
- Management accounts
- Add-back schedule
- Debt and working capital
- Customer and supplier contracts
- Leases and property documents
- Licences and permits
- Legal claims or disputes
Commercial and Operational
- Customer concentration
- Revenue by product or service
- Staff roster and payroll
- Asset and equipment list
- Systems and process documents
- Insurance and compliance records
- Marketing and sales pipeline
- Transition and handover plan
Related Business Sale Guides
Use these related guides to connect this topic with valuation, preparation, confidentiality, buyer readiness and the wider sale process.
Connect This Topic With Location and Industry
A business sale is shaped by the owner’s reason for selling, the industry, the local market and the buyer type. Use these hubs to connect this guide to sector and location-specific pages.
State and City Guides
Use state and city guides to connect the sale strategy to local buyer demand and market context.
Browse state guidesIndustry Guides
Use industry guides to understand sector-specific buyer questions, valuation factors and preparation priorities.
Browse industry guidesUseful Official and Authority Resources
These resources support background research on business sale, tax, compliance and market data. They do not replace professional legal, accounting, tax or valuation advice.
Due Diligence FAQs
When does due diligence start?
Usually after initial buyer interest, indicative offer or letter of intent, depending on the process.
Can due diligence reduce the price?
Yes. If buyers find problems or unsupported claims, they may renegotiate price or terms.
Should I prepare before receiving an offer?
Yes. Preparation before buyer scrutiny reduces delays and improves confidence.
What is the biggest due diligence risk?
Poor records, hidden issues, customer concentration, unclear add-backs and owner dependence are common problems.
NEXT STEP
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