Due diligence is the stage where most business sales either succeed or fail. Understanding what buyers will request — and being prepared for it — is the difference between closing on your terms and watching a deal unravel.
Due diligence is the buyer's systematic investigation of your business. Once an LOI is accepted and you're in exclusivity, the buyer and their advisors will request substantial documentation to verify that what you represented in the CIM is accurate and that there are no material issues you haven't disclosed.
For sellers, this is typically the most stressful part of the transaction — not because there's something to hide, but because it requires organizing years of records, answering hundreds of questions, and doing it all while still running your business. Preparation is everything.
What Buyers Are Looking For
Buyers enter due diligence with one core question: is this business what we were told it was? They're looking to confirm the financial performance, understand the customer and operational risk, and identify any material issues that would change the price or the decision to buy.
They are also, importantly, looking for surprises. A competent buyer doesn't expect a perfect business — they expect an honestly represented one. Disclosed problems can be priced into the deal. Undisclosed problems can kill it at the worst possible moment.
The Due Diligence Checklist for Sellers
Here is a summary of what buyers typically request. We help sellers organize and prepare all of this before going to market — so it's ready when needed.
Financial Documents
3–5 years of tax returns (business and personal, if sole proprietor)
3–5 years of income statements and balance sheets
Year-to-date financial statements
Accounts receivable and payable aging reports
Bank statements (last 12–24 months)
Payroll records and employee cost history
Legal & Corporate
Articles of incorporation / formation documents
Operating agreement or bylaws
Ownership / shareholder records
Corporate minutes (last 3 years)
Any pending or threatened litigation
UCC filings and existing liens
Customer & Revenue
Customer list with revenue breakdown by account
Key customer contracts and service agreements
Renewal history and customer retention data
Revenue by channel or business line
Operations & Employees
Organizational chart and employee roster
Key employee agreements and compensation
Non-compete or non-solicitation agreements
Equipment list, age, and maintenance records
Real estate lease agreements
Vendor and supplier agreements
The Top Reasons Deals Die in Due Diligence
Most deals that fail in due diligence do so for one of a handful of reasons. Understanding them in advance helps you address them before they become problems:
When the numbers in the CIM don't match the actual tax returns or financial statements, buyers either walk away or significantly reduce their offer. This often happens not from dishonesty but from poor preparation — add-backs that weren't documented properly, inconsistencies between cash accounting and accrual, or optimistic projections that don't hold up to line-item review. We audit your financials before going to market to ensure the numbers hold.
When buyers discover that one customer represents 35% of revenue — and that this was buried in the CIM rather than prominently disclosed — it damages trust and often kills the deal or forces a significant price reduction. Proactive disclosure of customer concentration, paired with a strong narrative about the relationship and its stability, is the right approach.
A prior lawsuit that was settled, an environmental issue from a previous owner, a regulatory compliance gap, or unpaid payroll taxes are the kinds of items that surface in diligence and that buyers interpret as red flags — not because of the issue itself, but because it wasn't disclosed upfront. We help sellers conduct a pre-diligence review to identify and address these issues before buyers find them.
When buyers start asking detailed operational questions and discover that the owner is deeply embedded in day-to-day operations, customer relationships, and key decisions — more so than represented — they lose confidence in the transition. This is one of the most common issues we help sellers address well before going to market.
How to Survive Due Diligence as a Seller
The sellers who navigate due diligence most successfully share a few common practices:
Organized a data room before going to market — not scrambling to find documents after LOI
Disclosed known issues upfront with context, rather than hoping buyers don't find them
Stayed objective — when buyers ask difficult questions, the right answer is a straight answer, not a defensive one
Maintained business performance through the sale process — declining metrics during diligence raise concerns
Used their broker as a communications channel — having a professional buffer for buyer questions reduces friction
Our Pre-Diligence Preparation Service
As part of our engagement process, we conduct a pre-diligence review of your financials and operations — identifying potential issues before buyers find them and helping you address them on your terms. This single practice has saved more deals than any other thing we do.
Be Ready When It Matters
Due Diligence Starts Long Before the Buyer Asks
The best time to prepare for due diligence is well before you go to market. Let's talk about where you stand and what to address first.