What buyers actually examine during financial diligence

Once a letter of intent is signed, a buyer typically engages a quality-of-earnings provider to test whether reported earnings represent sustainable cash generation. The exercise is not an audit. It does not opine on whether the financial statements are fairly presented. It asks a narrower and more commercial question: if we buy this business, what will it actually earn?

That question breaks down into a fairly consistent set of procedures.

1. Quality of earnings

The core of the exercise. The team rebuilds monthly earnings for the trailing two to three years and tests the normalization adjustments management has proposed, while looking for adjustments management has not proposed.

• Monthly revenue and gross margin trends, tested for consistency and for unexplained step changes
• Cut-off testing — whether revenue and expenses landed in the right period
• Accrual discipline, particularly in businesses that operate close to cash accounting in practice
• Non-recurring items in both directions, including the ones that helped earnings
• Standalone costs the business will incur post-close but does not incur today

2. Revenue composition and durability

Buyers pay for future revenue, so they test how much of it is likely to persist. Expect analysis by customer, by service line, and by cohort where the data supports it.

• Customer concentration, usually measured at the top five and top ten
• Revenue retention and churn, including whether lost customers were replaced by similar ones
• Contracted versus recurring versus repeat versus project revenue — these are four different things and are valued differently
• Pricing history and whether increases have held
• Whether relationships sit with the business or with the departing owner

3. Working capital

One of the most consequential and least anticipated areas. The buyer establishes a normal level of working capital — the peg — that the business must deliver at closing. Deliver less, and the purchase price is reduced dollar for dollar.

• Monthly working-capital balances across at least twenty-four months, to identify seasonality and the true normal level
• Accounts receivable aging and collectability, including any receivables unlikely to be collected
• Inventory existence, valuation, and obsolescence where applicable
• Accounts payable aging, and whether payables have been stretched recently
• Deferred revenue and customer deposits, and whether they represent an obligation the buyer inherits

Owners frequently discover late that reducing working capital in the months before closing — collecting aggressively, delaying payables — does not create value. It moves cash across the closing line in a way the peg mechanism is specifically designed to neutralize.

4. The balance sheet and off-balance-sheet items

• Debt and debt-like items, which is a broader category than owners expect: capital leases, deferred compensation, accrued but unpaid bonuses, unfunded obligations, earnouts from prior acquisitions, and unpaid taxes
• Related-party balances and transactions
• Reserve adequacy — bad debt, warranty, inventory, and self-insurance
• Capital expenditure history versus maintenance requirements, to test whether earnings have been supported by deferred investment

5. Systems, controls, and the close

This receives less attention in summaries but shapes how the entire process feels. A team that can produce a reconciled trial balance, a consistent monthly close, and clean supporting detail on request will move through diligence quickly. A team that cannot will find every subsequent request treated with more suspicion.

Diligence findings compound. The first unexplained variance determines how closely the next twenty are examined.

What an owner can do in advance

1. 01Run the analysis on yourself first, ideally a year or more before a process, using the same procedures a buyer would.
2. 02Rebuild monthly financials for the trailing three years and make sure they are internally consistent and reconciled.
3. 03Calculate your own working-capital history monthly, so the peg discussion starts from your data rather than someone else's.
4. 04Document adjustments with schedules that tie to the ledger.
5. 05Resolve related-party items, cleanup entries, and unusual balance-sheet accounts before they become questions.
6. 06Organize a data room in advance rather than assembling it under deadline, and confirm that what it contains actually agrees.

None of this changes what the business is worth on its own. What it changes is the number of open questions between a letter of intent and a closing — and open questions, late in a process, tend to be resolved in the buyer's favor.