Sellers present an adjusted EBITDA figure. Buyers rely on it. Lenders underwrite against it. But between the reported earnings on the income statement and the adjusted number in the information memorandum, there is a series of decisions — each one a judgment call about what belongs in the normalized earnings of the business and what doesn't.
Those judgment calls are where deals are won, lost, or mispriced.
The challenge for buyers, particularly in the mid-market where seller-side preparation varies widely, is that not all adjustments are equal. Some are entirely legitimate. Some are defensible but aggressive. Some are, charitably, optimistic. And a few are the kind of thing that, if unchallenged, will surface as a post-close earnings shortfall that no warranty claim will fully recover.
Understanding the five categories of EBITDA adjustments — and knowing which questions to ask about each — is a foundational skill for any PE professional. It's also the area where we see the widest gap between what a quality FDD report should cover and what many actually deliver.
Why adjustments matter more than they used to
A decade ago, mid-market EBITDA multiples in Europe and the US typically sat between 5x and 7x. Today, for quality assets in resilient sectors, 8x to 12x is common. At those multiples, a €500K adjustment error doesn't just move the EBITDA figure — it moves the enterprise value by €4M to €6M. For a fund writing €15M to €30M equity checks, that's material.
Higher multiples mean higher stakes for each adjustment line item. They also mean that the seller — and the seller's advisor — has a stronger incentive to present the most favorable adjusted EBITDA that can be defended. This isn't nefarious. It's rational. But it means the buyer's FDD provider needs to approach adjustments with a forensic eye, not a rubber stamp.
The five categories
Every EBITDA adjustment in a mid-market transaction falls into one of five categories. Understanding them is not about memorizing a taxonomy — it's about recognizing the distinct risk profile of each, and knowing where to push.
Owner compensation and related-party adjustments
In founder-led businesses, owner compensation rarely reflects market rates. The adjustment — replacing actual pay with market-rate equivalents for roles that need filling post-close — is straightforward in principle but contested in practice. How many roles does the founder perform? What's market rate in this geography and sector? Are there related-party costs (property rent, services from connected entities) that need normalizing?
The risk isn't legitimacy — it's precision. A €200K swing in replacement cost at 10x moves the purchase price by €2M.
One-off and non-recurring items
The question isn't whether a cost occurred once — it's whether costs of that nature are likely to recur. A €300K legal settlement is non-recurring, but three disputes in five years suggests a baseline. The same applies to restructuring costs, consulting projects, and write-downs: if a business adds back €400K of "one-offs" every year for four years, the pattern is the data point.
The best FDD reports present non-recurring adjustments alongside a multi-year history. If total addbacks consistently exceed 5–10% of reported EBITDA, the label "non-recurring" deserves challenge.
Pro forma and run-rate adjustments
Pro forma adjustments normalize for events that have occurred but whose full-year impact isn't yet in the trailing twelve months — a price increase in Q3, a new contract in Q4, a facility closure. They're often the largest adjustments in the bridge and the hardest to verify, because they blend fact with forecast.
A rigorous FDD report isolates the verifiable component (the contract value, the price delta, the cost that has actually ceased) from the assumed annualized impact. For each pro forma adjustment, the key question: what portion represents realized impact versus projection?
Accounting policy and classification adjustments
These arise when the target's accounting policies differ from standard or when classifications obscure true operating performance: capitalized costs that should be expensed, revenue recognition timing that flatters the period, lease treatment differences, or provisions released to boost earnings.
Individually small, they can be significant in aggregate — and they often signal broader questions about reporting quality. A business that capitalizes development costs aggressively may take a liberal view on other discretionary policies too.
Synergies and post-acquisition cost savings
Synergies frequently appear in EBITDA bridges — particularly seller-prepared ones — inflating the earnings figure the multiple is applied to. The issue isn't that synergies are unreal. It's that they belong in the buyer's investment case, not in the adjusted EBITDA that sets the headline price. When they creep in, the buyer pays the seller for value their own team and capital still need to deliver.
A clear FDD report separates historical, verifiable adjustments from forward-looking synergies and makes it unambiguous which version of adjusted EBITDA the purchase price benchmarks against.
The adjustment bridge as a diagnostic tool
Taken individually, each category of adjustment can be assessed on its merits. But the real diagnostic value of the adjustment bridge comes from looking at the totality. What proportion of adjusted EBITDA comes from adjustments? How does that proportion compare across the periods reviewed? Are the adjustments increasing as a percentage of reported EBITDA over time?
A healthy adjustment bridge is one where the total quantum is modest relative to reported earnings, where each item is individually sourced, and where the trend is stable or declining over time. A bridge where adjustments are large, growing, and concentrated in categories two and three — non-recurring items and pro forma assumptions — is one that warrants a longer conversation before it sets the enterprise value.
What good looks like in practice
The FDD report that serves the buyer best is not the one that confirms the seller's adjusted EBITDA. It's the one that presents an independent view — one where each adjustment has been verified against source documents, where the methodology is transparent, and where the buyer has enough information to make their own judgment about which adjustments they're comfortable underwriting.
At Signum, we approach the EBITDA bridge as the most critical section of every FDD report we produce. Every adjustment is traced to a source document, general ledger entry, or verified management confirmation. We present a multi-year adjustment history so buyers can see patterns, not just point estimates. And we separate verified historical adjustments from projected impacts, so it's always clear what the buyer is paying for fact versus expectation.
The result is an adjusted EBITDA figure that both the buyer and the lender can have confidence in — not because it confirms what the seller presented, but because it was independently derived with a complete audit trail.
In a market where the cost of getting this number wrong is measured in millions, that confidence is worth having.
Need confidence in the EBITDA figure before you commit?
We produce FDD reports where every adjustment is source-traced and independently verified. Talk to us about your next transaction.
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