Why EBITDA Adjustments Are Central to Every Deal
When a company is being sold, the headline number that drives valuation is almost never the raw EBITDA from the financial statements. Instead, buyers and sellers negotiate over adjusted EBITDA -- a modified earnings figure that attempts to reflect the "true" recurring profitability of the business.
This matters enormously because enterprise value in most M&A transactions is calculated as a multiple of EBITDA. If a business is being valued at 10x EBITDA, every $1 million adjustment to EBITDA translates to $10 million of enterprise value. That is why EBITDA adjustments are one of the most contested areas in any deal process and why interviewers love to test your understanding of them.
This guide covers the full landscape: what adjustments are, the most common types, how buyers and sellers view them differently, what quality of earnings reports reveal, and the red flags that should make you skeptical.
What Is Adjusted EBITDA?
Adjusted EBITDA starts with reported EBITDA and then adds back or removes items that are considered non-recurring, non-cash, or unrelated to the ongoing operations of the business.
The formula:
Reported EBITDA
+ Non-Recurring Expenses
+ Non-Cash Charges
+ Owner/Seller-Specific Costs
- Non-Recurring Income
= Adjusted EBITDA
The goal is to present a "normalized" earnings figure that represents what the business would earn on a steady-state, go-forward basis under new ownership. In theory, this gives buyers a cleaner picture of what they are actually paying for.
In practice, sellers have a strong incentive to maximize adjusted EBITDA (higher valuation), while buyers want to minimize it (lower purchase price). This tension is at the heart of every M&A negotiation.
The Most Common EBITDA Adjustments
1. One-Time Legal and Litigation Costs
If a company spent $5M on a patent lawsuit that has since been resolved, that expense does not reflect ongoing operations. Sellers will add it back, arguing it inflated costs in the affected period without being indicative of future expenses.
When it is legitimate: The litigation is truly resolved and unlikely to recur. When it is questionable: The company faces lawsuits regularly (e.g., product liability in pharma). If legal costs recur every year, they are not really "one-time."
2. Restructuring Charges
Restructuring charges include severance payments, facility closure costs, and asset write-downs associated with reorganizations. These are added back because they represent a discrete event, not an ongoing operating cost.
Typical add-back: $2-10M for a mid-market company going through a one-time restructuring. Red flag: If the company has taken restructuring charges in three of the last five years, these are arguably a recurring cost of doing business.
3. Stock-Based Compensation (SBC)
Stock-based compensation is one of the most debated adjustments in finance. GAAP requires SBC to be expensed on the income statement, but many sellers add it back because it is a non-cash charge.
The seller argument: SBC does not consume cash, so adding it back gives a truer picture of cash earnings. The buyer argument: SBC is a real economic cost -- it dilutes existing shareholders and represents compensation that would otherwise need to be paid in cash. If you fire everyone and rehire them without equity, your cash comp bill goes up by a similar amount.
In practice, most buyers will at least partially haircut SBC add-backs, especially for high-growth tech companies where SBC can represent 10-20% of revenue.
4. Owner Perks and Above-Market Compensation
In private companies, owners often run personal expenses through the business: luxury cars, family members on the payroll, country club memberships, personal travel. These costs will not exist under new ownership, so they are added back.
Similarly, if the founder pays himself $2M per year but a replacement CEO would cost $500K, the $1.5M difference is a legitimate adjustment.
Common items: Personal vehicles, family salaries, personal insurance, above-market rent on owner-controlled real estate, personal legal fees.
5. Non-Recurring Revenue Adjustments
Not all adjustments increase EBITDA. If a company had a one-time contract or windfall gain that inflated revenue in a given year, it should be subtracted to avoid overstating normalized earnings.
Example: A consulting firm landed a $3M one-time government contract that will not recur. That revenue (and associated margin) should be removed from adjusted EBITDA.
6. COVID and Pandemic-Related Adjustments
Even in 2026, some companies still present COVID-era adjustments -- arguing that 2020-2021 results were abnormally depressed and that "normalized" EBITDA should reflect pre-pandemic or post-recovery run rates. While this was reasonable in 2021-2022, it has largely lost credibility by now. Any company still making pandemic adjustments in 2026 deserves heavy scrutiny.
7. Pro Forma and Run-Rate Adjustments
These are forward-looking adjustments that reflect changes already implemented or in progress:
- Cost savings: "We just renegotiated our supplier contract, saving $2M annually. Only 6 months of savings are in the financials, so we add back the other 6 months."
- New revenue: "We signed a new customer in Q3 that will generate $5M annually, but only $1.5M is in the trailing numbers."
- Facility changes: "We closed our legacy warehouse in Q2, eliminating $1M of annual costs."
Pro forma adjustments are among the most aggressive because they rely on management projections rather than historical results. Buyers typically discount these heavily.
The Seller's Perspective vs. the Buyer's Perspective
How Sellers Present Adjustments
The sell-side investment bank prepares a Confidential Information Memorandum (CIM) that includes an adjusted EBITDA bridge. The goal is to present the most favorable (but defensible) picture of earnings.
Sellers tend to:
- Cast a wide net for add-backs
- Include aggressive pro forma adjustments
- Minimize any negative adjustments
- Present EBITDA on an "adjusted, run-rate" basis that may be 20-40% higher than reported EBITDA
How Buyers Scrutinize Adjustments
Buyers and their advisors go through each adjustment line by line, asking:
- Is it truly non-recurring? Has this "one-time" expense happened before?
- Is the magnitude accurate? Is the company inflating the size of the adjustment?
- Is it already reflected? Does the historical period already capture the benefit, making the adjustment a double-count?
- Is the run-rate achievable? For pro forma adjustments, what evidence supports the projected savings or revenue?
Sophisticated buyers build their own adjusted EBITDA, which typically comes in 10-25% below the seller's figure. This gap is a major source of negotiation in every deal.
Quality of Earnings Reports
A Quality of Earnings (QoE) report is an independent financial analysis performed by an accounting firm (usually one of the Big 4 or a specialized transaction advisory firm) on behalf of the buyer or seller.
What a QoE Report Covers
- Adjusted EBITDA analysis: Independent validation (or rejection) of each adjustment
- Revenue quality: Customer concentration, contract terms, recurring vs. non-recurring revenue
- Working capital analysis: Normalized working capital levels and seasonality
- Earnings sustainability: Whether margins and growth are sustainable
- Tax analysis: Identification of tax risks and potential liabilities
Why QoE Reports Matter
The QoE report is the buyer's most important diligence tool. It provides an independent adjusted EBITDA figure that often differs significantly from the seller's presentation. The QoE-adjusted EBITDA typically becomes the basis for the final purchase price negotiation.
In interviews, you should know that QoE reports exist and understand their role. If asked about due diligence in M&A, mentioning the QoE report demonstrates real deal awareness.
Red Flags in EBITDA Adjustments
When evaluating a target's adjusted EBITDA, watch for these warning signs:
1. Adjustments Exceed 30% of Reported EBITDA
If a company reports $50M EBITDA but claims $70M adjusted, that is a 40% adjustment rate. The more adjustments there are, the less you can trust the "adjusted" number.
2. The Same "Non-Recurring" Item Appears Every Year
If restructuring charges show up in 2023, 2024, and 2025, they are recurring. Period. The label does not matter -- the pattern does.
3. Aggressive Pro Forma Revenue Assumptions
"We just signed a contract worth $10M annually but only $500K is in the numbers." Verify the contract terms, ramp schedule, and whether similar projections have been accurate in the past.
4. Related-Party Adjustments Without Support
If the company claims $3M in above-market rent paid to the owner's real estate LLC, verify the market rate with independent data. Sellers sometimes inflate these adjustments.
5. Vague or Bundled Adjustments
An adjustment labeled "Other one-time items: $4.2M" with no further detail is a red flag. Every adjustment should be individually identified and supported with documentation.
6. Customer Concentration Risk Hidden in Adjustments
If a company lost its largest customer (20% of revenue) and adds back the "non-recurring" churn, that is deeply misleading. Customer losses in a concentrated revenue base may signal structural problems.
EBITDA Adjustments in Interviews
Here are the most common interview questions on this topic:
"What are common EBITDA adjustments?" Walk through the categories above: non-recurring expenses, SBC, owner perks, restructuring, and pro forma items. Give specific examples.
"Why do buyers and sellers disagree on adjusted EBITDA?" Sellers want the highest possible valuation; buyers want to pay a fair price. Each side has incentives to interpret adjustments favorably. The QoE report helps bridge the gap.
"Is stock-based compensation a real expense?" Yes. It dilutes equity holders and would need to be replaced with cash compensation if eliminated. However, it is non-cash in the current period, which is why some argue it should be excluded from EBITDA.
"What is a quality of earnings report?" An independent analysis of a target's earnings quality, typically commissioned by the buyer during due diligence. It validates or rejects the seller's adjusted EBITDA and identifies financial risks.
How This Connects to Valuation
Adjusted EBITDA flows directly into every major valuation methodology:
- EV/EBITDA multiples: The adjusted number is the denominator in comparable company and precedent transaction analysis.
- DCF models: Adjusted EBITDA is the starting point for projecting free cash flows.
- LBO models: Entry valuation in a leveraged buyout is based on adjusted EBITDA.
Getting the adjustments right (or wrong) ripples through every analysis. This is why experienced bankers and investors spend so much time on EBITDA normalization.
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