Quick answer: Revenue recognition due diligence tests whether sales were recorded in the right period and at the right amount. The idea behind the current US standard is that revenue belongs in the period when the company delivers what it promised, at the amount it expects to keep. Buyers test period-end cut-off, bill-and-hold sales, work in progress, deferred revenue, bundled contracts, rebates, returns and shipments into distributor stock, and they lower adjusted EBITDA for revenue they judge was recorded early.
Key points
- Revenue belongs in the period when the company delivers what it promised, and most findings are sales recorded early, in too large an amount, or gross when only a fee was earned.
- Buyers test revenue against delivery evidence at period end, against cash in the bank, and against credits and returns issued after the period closed.
- A correction that moves revenue between periods mostly changes one period, while a finding about method can lower earnings in every period and the multiple applied to them.
- Companies that keep cash or tax-basis books face a restatement to accrual revenue before any other test, and that restatement is often the first adjustment a buyer shows.
The idea behind every revenue test
A buyer treats revenue as earnings only when the company has delivered what it promised and expects to keep the money. The current US revenue standard, known as ASC 606, rests on that idea. It asks whether the customer has taken control of the goods or services, and it measures revenue at the amount the company expects to be entitled to. Where one contract holds several promises, such as equipment, installation and a service plan, the price is split among them and each part is recorded as it is delivered. Where the price can shrink through rebates or returns, the company estimates that part and records only what it is unlikely to give back.
Buyers’ accountants reduce the idea to four checks on each revenue stream. They confirm that delivery happened before the period ended, that the customer cannot undo the sale, that the company sold for itself and not as an agent, and that cash followed and matches. The diligence overview places this work among the other workstreams.
Many private companies keep cash or tax-basis books and never apply the standard formally. The accountants then recast revenue to an accrual basis from invoices, deposits and contracts, and the recast figure, not the bookkeeper’s, goes into adjusted EBITDA. The guide to converting cash-basis books covers that step.
Revenue issues by business model
The table follows the order in which buyers usually meet each issue. It shows what a buyer tests and what raises doubt, not the accounting answer for any one contract.
| Issue | Where it appears | What the buyer tests | Sign of trouble |
|---|---|---|---|
| Cut-off | Product sellers and any business with a month-end close | Delivery or completion dates against invoice dates around each period end | Invoice spikes in the last days of a period; credit memos in the first weeks of the next |
| Bill-and-hold | Makers of custom or large items | A written customer request, goods set apart and ready to ship, no right for the company to use or redirect them | Invoiced goods still on the company’s floor; no signed request; storage charges |
| Percentage of completion | Contractors, engineering firms, custom manufacturers | Budgets, estimates to complete and the accuracy of estimates on closed jobs | Estimates revised only late in a job; margin fading near completion |
| Deferred and unbilled revenue | Subscriptions, tuition, maintenance contracts, services | A roll-forward of each balance: opening, billings, revenue released, closing | Deferred revenue falling while billings rise; unbilled balances that never become invoices |
| Bundled contracts | Equipment with installation, software with implementation | How the price is split among the promises and when each part is recorded | Most of the price recorded at the start of a contract that needs months of work |
| Gross versus net | Agencies, resellers, marketplaces, staffing firms | Whether the company controls the service before the customer receives it, sets the price and bears the risk | Pass-through costs inside revenue at thin margins |
| Rebates, discounts and returns | Distribution, consumer products, building products | Accruals against what customers actually claim and later credit memos settle | Accruals below actual settlements; accrual reversals that lift earnings |
| Sales into distributor stock | Manufacturers selling through distributors or retailers | Sell-through against shipments, channel stock levels, return rights and extended terms | Shipment surges at period end; returns after period end |
Industry guides go deeper where one issue dominates, such as deferred revenue at training companies, net revenue at marketing agencies and work in process at engineering firms.
Cut-off at the end of the period
Cut-off comes first because it is cheap and finds a great deal. The accountants take invoices dated in the last days of the period and the first days of the next and match each to proof of delivery, such as bills of lading, signed receipts, completion certificates and time sheets. They then read credit memos issued after period end and trace each to the sale it reverses. A sale recorded before its delivery evidence moves to the later period with its cost, and the correction applies at both ends of the period the price is built on.
Illustrative example: A cut-off finding and its price
A manufacturer’s books close on December 31. The buyer’s accountants find invoices dated December 29 and 30 for $600,000 of goods that shipped on January 3 and 4, with $420,000 of direct cost. Moving both to January lowers adjusted EBITDA for the year ending December 31 by the $180,000 of gross profit. They also find that the same practice a year earlier recorded $500,000 of sales and $350,000 of cost in the prior December that belonged to January, so the corrected year gains $150,000. The net change is a $30,000 reduction, and at an invented multiple of 6.0x adjusted EBITDA the price falls by $180,000. Had the practice begun only in the final weeks, the full $180,000 would come out and the price would fall by $1,080,000. The numbers are invented to show the mechanics and are not benchmarks.
A consistent practice limits the damage, because the two ends largely offset. A change of practice in the last weeks before a sale process reads as a signal and widens the accountants’ samples. The proof of cash guide covers the matching test against bank deposits.
Work in process and deferred revenue
Revenue recorded as work proceeds rests on an estimate of total cost. The buyer asks for a job schedule showing contract price, cost to date, estimated cost to complete, billings and revenue recorded, then compares the estimates made at the start of closed jobs with their final results. Final costs that run above early estimates suggest open jobs are overstated too. The gap between revenue recorded and amounts billed sits on the balance sheet as an unbilled asset or a liability for billings ahead of work.
Deferred revenue is cash received for work not yet done. The buyer tests a roll-forward of the balance, then decides its treatment in the deal, because the company keeps the cash while the buyer inherits the duty to serve those customers. The balance may sit in the working capital target, be deducted as a debt-like item or be left out, and each choice changes what the owner receives. The working capital peg guide and the debt-like items guide show how. For subscription and maintenance revenue, the revenue quality guide covers how recurrence is judged. For bundled contracts, the buyer asks whether the parts delivered later were priced at what they would sell for alone.
Distributor sales, rebates and returns
A company that sells through distributors or retailers records revenue when product ships, but real demand is what those customers sell onward. When the channel holds more stock than end customers will buy, the revenue reverses later through returns, credits or price concessions. Channel stuffing is the deliberate version, in which a company ships more than the channel needs near a period end, often with extended payment terms or return rights.
Buyers test for it with distributor inventory reports, sell-through data, weeks of supply in the channel over time, credit memos issued after period end and any written or verbal return rights or side letters. Rebates and promotional allowances get the same scrutiny, with the buyer comparing the accrued amount with what customers later claimed, because a company that accrues less than it later pays overstates revenue in each period. The lighting and electrical manufacturer diligence guide shows how channel inventory is tested in one industry.
Warning signs and what a finding does to the numbers
Buyers’ accountants treat several patterns as reasons to widen their samples.
- Revenue growing faster than cash collected, with receivables rising behind it.
- Manual journal entries to revenue at period end, or revenue booked without an invoice.
- A jump in the final weeks of a period that the seasonal pattern does not explain.
- Credit memos and returns clustered just after a period closes.
- Changes in accounting estimates or policy shortly before the sale process begins.
- Customers paying well beyond stated terms, or on terms that differ from the contract.
A timing correction mostly changes one period’s adjusted EBITDA. A finding about method, such as estimates on long projects or gross reporting of pass-through revenue, lowers every period, and the buyer applies the multiple to the lower figure. Both kinds can also move working capital, because unbilled receivables, deferred revenue and the returns allowance sit among the balances the true-up measures. Either kind makes the buyer widen its samples and reread other schedules, a cost in time and credibility that can resurface as a retrade. The guide to findings that reduce price puts revenue alongside the other adjustments.
Sellers can get ahead of this with a written revenue policy for each stream, a contract schedule for the largest customers, a cut-off review of the last quarter and roll-forwards of every deferred and unbilled balance. A change in method shortly before launch needs a memo explaining why. A sell-side quality of earnings review can surface the rest while there is time to respond.
Frequently asked questions
Do a company’s books need to be audited for buyers to test revenue?
Not necessarily. Many private companies keep cash or tax-basis books, or have statements that were compiled or reviewed and not audited. The buyer’s accountants recast revenue to an accrual basis and test it against invoices, contracts and bank records. Audited statements can shorten that work, but the recast figure is still what the price rests on.
What is cut-off testing?
It checks whether sales near a period end were recorded in the right period. Accountants match invoices dated just before and just after the period end to proof of delivery, then read credit memos issued afterward. Sales recorded before delivery move to the later period with their cost, which lowers earnings for the period the buyer is pricing.
What is channel stuffing and how do buyers spot it?
It means shipping more product to distributors or retailers than they will sell, usually near a period end, to record revenue early. Buyers compare shipments with the channel’s sell-through, check distributor stock levels, and read returns, credits and payment terms after the period closes. Surges at period end followed by returns are the usual sign.
How does deferred revenue affect the price of a business?
The company holds the cash, but the buyer inherits the duty to serve customers who already paid. Depending on the deal, the balance sits in the working capital target, is deducted as a debt-like item or is left out of both. Each treatment changes what the owner receives, so the treatment is worth settling early.
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Related guides
- Quality of Earnings Report: What It Is and What Buyers Test: A quality of earnings report tests whether a company’s reported profit is real and repeatable. See what buyers examine, how it affects price and how sellers prepare.
- Proof of Cash: How Buyers Test Revenue and Expenses Against the Bank: A proof of cash reconciles bank deposits and disbursements to reported revenue and expenses. See how buyers run it, what the gaps reveal and how a seller prepares.
- Converting Cash-Basis Books to Accrual for a Sale: What Changes in EBITDA: How to convert cash-basis books to accrual before a business sale: the entries that change, the effect on EBITDA, who does the work and the tax return tie-out.
- Quality of Earnings Findings That Reduce Price and How to Pre-Empt Them: The quality of earnings findings that most often lower a sale price, such as rejected add-backs and cut-off errors, with how each appears and how to pre-empt it.
- Sell-Side Quality of Earnings Report: Scope, Timing and How to Use It: What a sell-side quality of earnings report covers, when an owner should commission it, who should perform it and how to use it in the CIM and with buyers.
- Managing the Diligence Process as a Seller: Request Lists, Q&A and Response Discipline: How a seller runs due diligence: one point of contact, a request tracker, staged disclosure, a Q&A log and response discipline while the business keeps performing.
This guide is general education. It is not a valuation opinion, appraisal, investment advice, or legal or tax advice. How these guides are made.