What is quality of earnings?
A quality of earnings analysis — universally shortened to QoE — is a financial diligence study that interrogates whether a target's reported earnings reflect the true, sustainable economics of the business. It is not an audit. An audit asks whether the financials comply with accounting standards; a QoE asks whether the earnings are real, recurring, and likely to repeat.
The output is a QoE report, typically prepared by a transaction advisory team at an accounting or specialist firm, commissioned by the buyer (buy-side QoE) or, increasingly, by the seller to get ahead of the process (sell-side QoE). Its centerpiece is a bridge from reported EBITDA to an adjusted, "normalized" EBITDA that a buyer can actually underwrite.
Because price in most private deals is a multiple of EBITDA, the QoE-adjusted EBITDA number is frequently the single most consequential figure in the transaction. A dollar moved on or off that line moves the purchase price by the full multiple.
What a QoE actually tests
A QoE works through the income statement and the underlying ledgers looking for the gap between what was reported and what is durable.
- Revenue quality. Is revenue recognized appropriately, concentrated in a few customers, contracted versus one-time, and free of channel-stuffing or pull-forwards near period-end?
- Normalizing adjustments. Add-backs for one-time, non-recurring, and owner-specific items — and, just as importantly, deductions for understated run-rate costs the business will carry post-close.
- Run-rate and pro-forma effects. The full-year impact of recent price changes, lost or won customers, headcount changes, and acquisitions, so EBITDA reflects the go-forward business rather than a blended historical year.
- Working capital and cash conversion. Whether reported profit actually turns into cash, and what a normal level of working capital looks like — which feeds the closing mechanism, not just the price.
- Proof of cash. Tying reported earnings back to bank statements to confirm the profit was genuinely collected.
Why buyers and sellers both commission it
For a buyer, the QoE is the basis for the price they are willing to pay and the protections they negotiate. A finding that EBITDA is overstated by add-backs that won't survive ownership is direct leverage on price or structure.
For a seller, a sell-side QoE prepared before launch removes surprises. It lets the seller defend the EBITDA number with a credible third-party analysis already in the room, compressing the time a buyer's own QoE can take to chip away at value. Either way, the report becomes a core document in the data room and a reference point through closing.