In our experience, lower-middle-market deals fall apart in due diligence more than anywhere else. By then the LOI is signed, exclusivity is in place, and both sides have spent weeks or months and real money on professional fees. The buyer's quality of earnings team starts work and turns something up. It might be a variance nobody can explain, an add-back that doesn't hold, a revenue recognition policy that looks aggressive, or a customer relationship that is shakier than the marketing materials made it sound.
A deal can usually survive any one of those. Each still costs the buyer some confidence, adds time, and gives the buyer an opening to renegotiate that a seller who found the issue first would have closed off. Finding it first is the job of a sell-side quality of earnings report. If you're weighing your own report against waiting for the buyer's, our comparison of sell-side vs. buy-side quality of earnings covers who pays, when each happens and what each costs. This post stays on the sell-side QoE. The wider preparation work is in our guide on how to prepare your financials for a business sale.
What a Quality of Earnings Analysis Actually Is
A QoE is an independent review of whether reported earnings are recurring, sustainable and accurately presented. In most institutional deals the buyer commissions one for its own purposes, which means looking for issues that justify a lower price or a restructured deal. A sell-side QoE is commissioned by the seller first. It finds the same issues, gives the seller time to fix or explain them, and leaves the seller with a presentation that has already been tested from the buyer's side.
A financial issue the buyer finds in week eight of diligence makes the buyer question everything else you've told them. The same issue, disclosed by the seller in week one, usually gets handled as a routine diligence item.
A full QoE covers the reconciliation from net income to normalized EBITDA with add-back testing, revenue quality, customer concentration, gross margin by segment, working capital normalization, and any known legal or operational issues. The report typically runs 50-150 pages, and buyers read it closely in the diligence that follows. Our guide on what EBITDA is covers the underlying calculation line by line.
What Sell-Side QoEs Actually Find
The finding we see most is an add-back that doesn't survive independent testing. Typical examples are legal fees booked as one-time in each of the last three years, or a compensation add-back that assumes you could be replaced for far less than market. Found in a sell-side QoE, these leave the seller a choice: drop the add-back and present a smaller number that holds up, or keep it and document it better. Once the buyer's team is the one that finds the problem, neither option goes smoothly. Our guide on understanding add-backs covers each category and the documentation it needs.
Revenue quality work often turns up problems the seller didn't know it had: a stretch of high revenue from a single order that won't repeat, recognition policies that pull income into favorable periods, or "long-term" customers who actually buy one purchase order at a time. Customer concentration matters more than most of these, because it hits the multiple as well as EBITDA. Our post on business valuation drivers looks at concentration alongside four other factors that move multiples up or down.
The piece of the report sellers use most is the normalization schedule, which documents every adjustment from reported net income to normalized EBITDA. Coming from an independent accounting firm, it carries much more weight with buyers than a schedule the company prepared itself.
The Cost-Benefit Analysis
The two fee guides we rely on don't agree. In BD Emerson's July 2026 guide, a standard buy-side QoE costs $25,000 to $50,000 on a deal of $5 million to $15 million of enterprise value and $45,000 to $90,000 at $15 million to $75 million, with sell-side engagements priced 10 to 30 percent above that (BD Emerson, "How Much Does a Quality of Earnings Report Cost?", July 25, 2026). Bedrock's March 2026 guide quotes $12,000 to $25,000 for $10 million to $30 million deals (Bedrock, "How Much Does a Quality of Earnings Report Cost?", March 17, 2026). We set the two guides side by side in our post on sell-side vs. buy-side quality of earnings. Weigh those fees against a company valued at 6x. A QoE that documents $200,000 of legitimate add-backs supports $1.2 million of additional enterprise value, and one that heads off a $500,000 price cut in diligence pays for itself many times over. The same arithmetic is why inconsistent financials rank first, and most common, in our post on five deal-killers that collapse business sales.
When to Commission the Report
Split the preparation in two. Cleanup comes first and should begin twelve to eighteen months before the target transaction date: get onto accrual accounting, pull personal expenses out of the business, and document the add-backs. That leaves time to fix problems in the operation instead of explaining them away. The formal report comes later, three to six months before launch. Both advisors ACG interviewed recommend that window (Katie Maloney, ACG Insights, "Why More Sellers Are Using Quality of Earnings Reports for M&A Deals", December 2, 2025), and so does BD Emerson's fee guide. Commissioned then, the report reflects a current trailing twelve months when buyers begin their review.
Be careful about commissioning a sell-side QoE in the same fiscal year you go to market if it significantly changes your EBITDA presentation. It can look as though you adjusted the financials for the sale, and buyers notice normalization changes that coincide with a sale process.
Our post on the cost of waiting to sell your business covers what else goes wrong when the preparation window gets compressed. Starting late mostly limits how much you can still fix.
If a sale is twelve to eighteen months out, the cleanup can start now.