How to Prepare for Business Sale Due Diligence

How should you prepare for business sale due diligence?

In short

Prepare for due diligence by organising financial, corporate, contractual, employment, property, tax, compliance, intellectual property and dispute records before a buyer asks for them, resolving known issues, and preparing honest explanations of those that remain. Organised information shortens the process and reduces the risk of renegotiation.

Written by Tony Vaughan

Last reviewed: 7 October 2026 · Editorial policy

Key points

Due diligence is the buyer's investigation.
Organise information in advance.
Early disclosure beats late discovery.

Due diligence is a buyer's investigation of the business. Preparation happens long before it starts.

Two colleagues checking a loaf on a bakery production bench

Planning considerations

Financial records and management information
Corporate records: registers, filings, shareholdings
Customer, supplier and other commercial contracts
Staff: contracts, policies, pay and pensions
Property: titles, leases and condition
Tax compliance and history
Regulatory compliance, including data protection
Intellectual property ownership
Litigation and disputes, actual or threatened
Customer and supplier relationships and concentration

What areas are typically examined?

Financial records and management information
Corporate records: registers, filings, shareholdings
Customer, supplier and other commercial contracts
Staff: contracts, policies, pay and pensions
Property: titles, leases and condition
Tax compliance and history
Regulatory compliance, including data protection
Intellectual property ownership
Litigation and disputes, actual or threatened
Customer and supplier relationships and concentration

How can you prepare without a buyer?

Organise records in a logical structure, resolve known issues, and prepare honest explanations of any that remain. Disclosing issues early is usually better than having them discovered.

Managing due diligence within a live transaction is a sale-process matter. Start with an experienced ExitPlanning adviser to discuss your position before deciding what transaction support is appropriate.

This guide is general commercial information based on professional experience of UK SME transactions. It is not legal, tax, accounting or financial advice, and transaction-specific requirements vary. Take advice from appropriately qualified professionals before acting.

Specialist resources

Discuss your exit with an adviser — to consider a possible full sale after an experienced adviser understands your circumstances

Sources

Rules and thresholds change. Check the current position at the source and take professional advice before acting. Citing official guidance is not a substitute for professional tax or legal review.