What is Quality of Earnings?
Short answer: Quality of earnings, or QoE, assesses the composition and sustainability of reported earnings for a transaction. It asks what earnings the current business actually produced and which adjustments are supportable.
QoE commonly examines revenue recognition, cut-off, customer and product mix, gross margin, one-time items, owner-related costs, accounting estimates, run-rate changes and cash conversion. It is usually part of financial due diligence but can be presented as a focused analysis. It differs from an audit, which expresses an opinion on financial statements, and from valuation, which applies assumptions and multiples to future economic benefits. Buyers use QoE to determine maintainable earnings and financing capacity. Sellers use it to prepare defensible adjustments. Private-investment teams should keep historical evidence separate from future value-creation actions.
How it works
The analysis reconciles reported EBITDA or another measure to the ledger and financial statements, then lists every proposed adjustment with amount, period, evidence, recurrence and forecast treatment. Revenue and margin are tested by customer, product or cohort where data permits. Cash conversion and working capital are examined to identify earnings that do not become cash. Adjustments are classified as historical correction, non-recurring item, pro forma run rate or forecast improvement. Common mistakes include adding back recurring costs, using a full-year benefit for an action not yet implemented, excluding losses while keeping related revenue and assuming that management-defined adjusted EBITDA matches the sale agreement or lender definition.
Illustrative maintainable EBITDA = reported EBITDA + verified one-time costs - one-time income - missing recurring costs +/- sustainable run-rate effects
Example
Reported EBITDA is 20. Management proposes 3 of adjustments: 1.4 for a completed legal dispute, 0.9 for a sales team hired midyear and 0.7 for expected procurement savings. The dispute cost is evidenced and non-recurring, so it is added back. The annualised sales payroll is a recurring cost already partly reflected; analysis shows another 0.4 must be deducted for a full-year basis. Procurement savings have not been contracted and remain forecast upside, not historical QoE. Maintainable EBITDA is therefore 20 + 1.4 - 0.4 = 21. The buyer tests valuation at 21 and models the procurement initiative separately with cost and timing.
Why it matters
Sellers and boards use QoE to understand likely bidder challenges before agreeing a headline multiple. Buyers and private-investment teams use it to align valuation, debt and investment-committee returns on a reproducible base. Lenders may apply their own EBITDA definition and adjustments. Management gains a clearer bridge between statutory reporting and transaction economics. A high-quality analysis makes disagreement visible; it does not require both parties to accept the same commercial judgement.
QoE is not a standardised accounting measure or assurance engagement unless expressly structured as one. Scope, reliance and provider liability depend on engagement documents. Accounting, tax and purchase-agreement treatments can differ. Fraud, side agreements or weak source data may not be detected. Forecast improvements require separate diligence. Users should understand currency, period, consolidation perimeter and gross or net basis before comparing figures, and obtain specialist advice for legal, tax or regulatory findings.