Many business owners think the hardest part of selling a business is finding a buyer. In reality, that is often not the case. Most deals fall apart during due diligence. Research suggests that 70 to 80 percent of acquisitions fail in this phase. Why?

Because due diligence is the moment when buyers verify everything they have been told about the business. If documents are missing, numbers do not match, or contracts are unclear, buyers quickly lose confidence. And when confidence disappears, deals often collapse. The good news is that many of these problems can be prevented with proper preparation.

In this article we explain what due diligence is, why deals fail, and how you can prepare your business before selling.

What is due diligence?

Due Diligence literally means: Careful investigation.

When a buyer is seriously interested in your company, he wants to check whether:

  • The numbers are correct
  • the contracts are valid
  • there are no legal risks
  • business operations are stable.

This research usually takes place after one LOI (Letter of Intent) is signed.

From that moment on, the buyer gets access to a large number of documents. Think of:

  • Financial figures
  • Contracts with customers
  • Employment contracts
  • Tax returns
  • Permits
  • intellectual property.

This process usually takes 4 to 8 weeks. A deal can change completely during that period.

Why do so many deals fail during due diligence?

Many entrepreneurs start collecting documents only after signing an LOI. Unfortunately, that is often too late. Here are the most common reasons deals fall apart.

1 Financial inconsistencies

Buyers will review financial documents such as:

  • financial statements
  • management reports
  • tax filings
  • EBITDA calculations.

If numbers do not align, confidence drops quickly.

For example:

  • revenue differs between reports
  • expenses are misclassified
  • EBITDA adjustments are unclear.

Buyers may respond by lowering the price or abandoning the deal.

2 Missing or weak contracts

Many small businesses operate for years with informal agreements. During due diligence buyers often discover:

  • key customers without contracts
  • outdated agreements
  • contracts that cannot be transferred.

This creates uncertainty and risk.

3 Legal structure problems

Buyers want clarity about ownership. Documents often requested include:

  • articles of incorporation
  • shareholder registers
  • board resolutions.

Missing documentation can slow down or derail a transaction.

4 Employee documentation issues

Employees are critical to business continuity. But buyers sometimes discover that:

  • employment contracts are missing
  • compensation structures are unclear
  • contractors should legally be employees.

These risks can impact the valuation.

5 Intellectual property risks

For many modern businesses, intellectual property is the most valuable asset. Examples include:

  • software
  • trademarks
  • domains
  • patents.

However buyers often discover that:

  • developers never transferred IP rights
  • trademarks are not registered
  • licensing agreements are missing.

This can create major legal risks.

The solution: a structured data room

To manage due diligence efficiently, companies use a data room. A data room is a secure digital environment where all company documents are stored. Typical categories include:

  • corporate and legal
  • financial and tax
  • commercial
  • HR and operations
  • technology and intellectual property
  • compliance
  • deal documents.

Preparing this structure in advance dramatically improves the due diligence process.ments in advance, you avoid having to search under time pressure during due diligence.

6 practical tips to prepare for due diligence

Here are six practical tips to increase the chance of a successful sale.

1 Start early

Do not wait until you have a buyer. Preparation should begin months or even years before selling.

2 Align financial data

Ensure that financial statements, tax filings, and internal reports match.

3 Formalize contracts

Document agreements with:

  • customers
  • suppliers
  • partners
  • employees.

4 Secure intellectual property

Ensure that:v

  • IP rights are transferred
  • trademarks are registered
  • licenses are documented.

5 Clarify corporate structure

Keep corporate documents organized and accessible.

6. Use a data room

A well-organized data room makes the due diligence process faster and smoother.

How BestBonobos prepares entrepreneurs for due diligence

BestBonobos includes a structured data room designed specifically for business sales. The platform guides entrepreneurs step by step through the documents buyers expect.

The data room includes sections such as:

  • corporate and legal
  • financial and tax
  • commercial and customers
  • HR and operations
  • technology and intellectual property
  • compliance and regulatory
  • deal preparation.

This ensures that nothing is overlooked. Because of this structure you know exactly which documents are needed. In our platform, this looks like this:

Why preparation increases your chances of closing

When buyers start due diligence, preparation creates confidence. A well-organized data room means:

  • faster due diligence
  • fewer surprises
  • stronger negotiation position.

Preparation does not guarantee a deal. But it dramatically increases the probability of closing.

Conclusion

Due diligence is the phase where buyers confirm that your business is exactly what it appears to be.Many deals collapse because entrepreneurs start preparing too late.

With proper preparation and a structured data room, you can significantly increase the chances of completing a successful business sale.

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