Every seller's adjusted EBITDA schedule includes add-backs — items added back to net income to show what the business "really" earns. Some add-backs are completely legitimate and you should accept them. Others are aggressive, unsupported, or outright fiction. Your job as a buyer is to evaluate each one line by line, understand the accounting logic, and get your QoE firm to confirm or reject the seller's position.
Why Add-Backs Exist
Small businesses routinely run personal expenses through the business, pay owner salaries that are above or below market, and have D&A charges that distort operating earnings. Add-backs exist to normalize these distortions so a buyer can evaluate what the business earns independent of the current owner's choices. The concept is valid. The execution is where abuse happens.
Always-Valid Add-Backs
Depreciation and amortization are always valid — these are non-cash charges required by accounting rules that do not represent actual cash leaving the business in the period they are recorded. Amortization of acquired intangibles (from a prior acquisition) is particularly aggressive to add back because you will have the same amortization when you buy the business, but D&A on operating assets is universally accepted. BDO's QoE methodology notes D&A add-backs are accepted in approximately 89% of engagements reviewed.
Excess owner compensation is valid when supported by market data. If the owner pays themselves $400K but a market-rate CEO would cost $180K, the $220K difference is a legitimate add-back. Quantify this with salary benchmarking data (BLS Occupational Outlook Handbook, Radford, or Korn Ferry Hay Group data for the relevant role and geography). Owner benefits (health insurance, retirement contributions, personal life insurance premiums) running through the business are also valid.
One-time legal or settlement costs are valid when documented and clearly non-recurring. Request the underlying invoices and confirm the matter is closed. Costs that recur every 2–3 years (contract renewal legal work, for example) are not one-time.
Aggressive But Often Accepted
Related-party rent is commonly added back when the seller also owns the building and is charging above-market rent. The valid add-back amount is the difference between actual rent paid and market rent for comparable space. Require a market rent analysis before accepting this add-back. Sellers who own the building complicate the deal structurally anyway — understand whether you are also buying the real estate.
PPP loans forgiven and recorded as income are typically removed from the earnings base (not added back, but excluded). COVID relief income that inflated 2020–2021 earnings is something to analyze carefully: it may have masked underlying weakness or may have funded real operating investments.
Red-Flag Add-Backs Buyers Should Reject
"Synergy" add-backs — costs the seller says you will eliminate after acquisition because of your scale or different structure — are almost universally rejected by institutional buyers and QoE firms. An add-back must represent a real cost the business is currently bearing that a normalized owner-operator would not bear. Future savings you plan to achieve are your equity upside, not a current add-back.
"Under-investment" add-backs are equally problematic: a seller who claims you can add back the maintenance capex they should have been spending to keep equipment current is asking you to pay a premium for a business they allowed to deteriorate. The right response is a capex normalization analysis, not an add-back acceptance.
One-time items that repeat every year are not one-time. If the prior three years each show a different "one-time" expense — legal settlement one year, equipment failure another, key employee departure a third — the pattern suggests normalized operating friction, not genuinely anomalous events.
Forward-looking cost reductions that have not materialized are not add-backs. If the seller says "we just signed a lease renewal at 20% lower rent," the savings are not in the historical financials and do not belong in the trailing EBITDA.
How to Handle Add-Back Disputes
When you disagree with an add-back, document your position in a bridge table: seller-stated EBITDA, each add-back with your accept / reject / partial position and supporting rationale, and your adjusted EBITDA. Present this table to the seller with the QoE firm's written position. Sellers who have a legitimate basis for an add-back can defend it with documents. Those who cannot defend it with documents are asking you to accept an unverified upward revision to the price you are paying.
A useful rule: only accept add-backs you can show to your lender and have them include in the EBITDA base for underwriting purposes. If your SBA lender will not count it, it probably should not be in your model either.