Due diligence is the process of testing the claims made by a seller against the actual performance of the business. You need to review financial statements, legal contracts, and operational data within 30 to 90 days to confirm that the business produces the cash flow the seller represents.
The short answer
- Due diligence is the process of confirming the seller's claims against objective financial data, not just accepting their narrative.
- Verify every financial figure against bank statements and tax returns to avoid purchasing based on inflated or incorrect earnings.
- The working capital peg is a critical negotiation point that ensures you take over a business with enough cash and inventory to function on day one.
- A 45 to 90-day timeline is standard; rushing the process increases the risk of overlooking operational or legal liabilities.
01Why do owners and buyers disagree on the numbers?
Buyers and sellers view numbers through different lenses. An owner considers a business a personal asset, while a buyer views it as a source of future cash flow. Disagreements arise when the seller includes non-operational expenses as legitimate add-backs or when they fail to account for the owner's market-rate salary.
Effective due diligence requires moving past labels. Do not accept a seller's adjusted EBITDA, or Earnings Before Interest, Taxes, Depreciation, and Amortization, without checking the underlying bank deposits. If the cash is not visible in the operating account, the earnings are a story rather than a fact.
A seller might exclude expenses they deem temporary, like a broken furnace, but a buyer must assess whether the business generates enough consistent cash to absorb similar repairs. Evaluate each expense based on its necessity for ongoing operations. Decisions regarding value should only be made once you separate the seller's narrative from the objective financial reality.
02How do you verify revenue without trusting the seller?
Trust is not a strategy in acquisition. Verify revenue by comparing the P&L statements to the business bank statements and the Sales Tax filings. If the gross revenue matches the bank deposits, you have a solid foundation for your analysis. If the bank statements show lower figures than the P&L, you must determine why.
Use the Debt Service Coverage Ratio, or DSCR, to test if the business can afford the acquisition debt. This ratio compares the business cash flow to the proposed loan payments. A healthy business should maintain a DSCR of at least 1.25. If the business cannot support the debt, it is not an acquisition, it is a liability.
Examine the accounts receivable aging report. If a significant portion of revenue is trapped in unpaid invoices, that revenue is less valuable because of the risk of non-payment. Focus on the timing of cash receipts rather than the accrual-based revenue entries to understand the true cash-generating speed of the company.
03What are the common warning signs in the records?
Watch for inconsistent expense patterns that spike near the end of a fiscal year. Owners sometimes move expenses to different years to improve the look of the current period. A sudden drop in utility costs, rent, or maintenance fees without a corresponding drop in activity is a signal that expenses might be hidden elsewhere.
Investigate the employee census for high turnover or over-reliance on a few key staff members. If the business cannot function without one person who is not the owner, you have a transferability problem. An organization that depends on specific employees for success is difficult to manage as a new owner.
Look for a high working capital peg, which is the amount of liquid assets the seller expects you to have on hand at closing. If the seller demands a high peg, they are essentially asking you to pay for the inventory and cash they are leaving behind. Ensure this amount is clearly defined in the purchase agreement to prevent disputes.
04How much time should each stage take?
A standard diligence process spans 45 to 90 days. The first 15 days involve gathering and reviewing initial documents like tax returns and financial statements. Use this time to build your preliminary model and assess if the valuation makes sense based on the provided data.
The next 30 to 45 days are for deeper investigation. This includes site visits, interviewing key employees, checking equipment, and reviewing complex contracts. This is when you should confirm the accuracy of the seller's representations regarding growth trends and customer retention.
The final 15 to 30 days are typically reserved for finalizing financing and drafting legal documents. If the diligence results remain inconclusive or if the seller is slow to provide data, extend your timeline. Never rush the end of the process to hit an artificial deadline; the risk of ignoring a symptom is too high.
05What is the working capital peg and why does it matter?
The working capital peg is the agreed-upon level of current assets minus current liabilities that must remain with the business at closing. It ensures the business has enough liquid capital, like cash, inventory, and accounts receivable, to operate on day one. Buyers often overlook this, which leads to immediate cash flow problems after purchase.
If you do not negotiate the peg, a seller might drain the bank accounts and ship the inventory before handing over the keys. You would then be left with a business that has customers and revenue but no cash to pay vendors or employees. This is a common trap for first-time buyers who focus only on the purchase price.
Set the peg based on the average working capital requirements over the last 12 months. This stabilizes the transition. If the actual working capital at closing is below the peg, the seller should owe you an adjustment. If it is above, you should pay the difference. This alignment protects both parties from post-closing disputes.
06How to handle legal and environmental risks?
Legal due diligence includes checking for ongoing litigation, intellectual property disputes, and compliance with local permits. A business operating without proper zoning or safety permits is a high-risk investment. Review all past and current lawsuits to see if the company is consistently involved in conflicts with vendors or former employees.
Environmental due diligence is non-negotiable for manufacturing or industrial sites. If the property has soil or groundwater contamination, you could become liable for the cleanup costs. Always review historical use of the property and, if necessary, order a Phase I environmental site assessment to identify potential hidden liabilities before signing.
Review insurance policies to ensure coverage is adequate and that there are no gaps in protection. A business that is underinsured or carries high premiums due to past safety issues indicates a poorly designed system. Always evaluate the cost of potential legal or environmental remediation as part of your total acquisition cost.
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Questions people ask about this
What if the seller refuses to share their tax returns?
This is a red flag. If they will not share tax returns, walk away from the deal, as you cannot verify the true performance of the business without them.
Does a broker have to disclose all known risks?
A broker represents the seller. While they must avoid fraud, it is your responsibility as the buyer to find the risks through your own due diligence process.
When should I involve a lawyer in the process?
Bring in a lawyer once you have signed a letter of intent and finished your preliminary review of the financial data to ensure legal protections are documented.
How do I know if an add-back is legitimate?
An add-back is only legitimate if it is a non-recurring expense that will not exist under your ownership, such as a one-time equipment repair or a legal settlement.
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