Khaled Azar 
EBITDA add-backs account for 29% of adjusted EBITDA in the average sale process, according to S&P Global’s latest M&A survey. That’s a significant number, but only 8% of companies actually hit their adjusted EBITDA projections in year one post-close. The gap between what sellers claim and what buyers accept is where deals get retraded.
Every founder believes their add-backs are reasonable. Buyers have seen thousands of them. They know which ones hold up and which ones fall apart under scrutiny. Understanding the difference before you go to market is the difference between your number and a haircut.
The share of adjusted EBITDA that add-backs represent in the average M&A deal process, per S&P Global research. Buyers scrutinize every dollar of it.
The Add-Backs Buyers Accept Without a Fight
Buyers accept add-backs they can verify and that will not recur under new ownership. The cleaner the paper trail, the less friction in diligence.
These categories consistently survive due diligence:
| Add-Back Category | What It Covers | Buyer Acceptance |
|---|---|---|
| Owner salary above market rate | Compensation paid to founders that exceeds what a hired CEO would cost | High, if replacement cost is documented |
| Genuine one-time legal expenses | Litigation, IP disputes, regulatory actions with clear endpoints | High, with legal invoices and case resolution proof |
| One-time recruiting costs | Executive search fees, signing bonuses for hires already made | High, if the hire is in place and fully ramped |
| Non-cash charges | Stock-based compensation, depreciation on assets not core to operations | High, standard adjustment in every model |
| One-time tech spend | Site redesigns, system migrations, one-off infrastructure upgrades | Medium-high, needs to be truly finished and non-repeating |
| Personal owner expenses | Family travel, personal vehicles, meals routed through the business | Medium, needs clear separation from business expenses |
The common thread: these are expenses that a rational new owner would not incur at the same level. Buyers model what the business looks like under their control. If the expense goes away cleanly, the add-back holds.
The Add-Backs Buyers Push Back On
The riskiest add-backs are the ones that sound non-recurring but actually are.
Twenty-six percent of add-backs in the average deal process fall into the “synergies and projected cost savings” bucket, per S&P Global. This is the category that causes the most damage. Buyers model aggressively in their IOI, then discount in diligence when the assumptions don’t hold.
The add-backs that create friction:
- Recurring “one-time” costs. If your books show a legal expense, a system upgrade, or a consulting engagement every year for three years, buyers will not add them back. A true one-time cost happens once.
- Projected cost savings post-close. “We’re going to cut this vendor contract after close” is not an add-back. It is a hope. Buyers will not give you credit for expenses you haven’t eliminated yet.
- Revenue acceleration adjustments. Some sellers try to add back costs tied to growth investments. Buyers see this as circular. The growth investment is part of what produced the revenue; stripping the cost inflates EBITDA without a corresponding adjustment to the growth story.
- Below-market owner salary (partial add-back failures). If you pay yourself $80K to run a $5M ARR business, buyers will add back your salary but then subtract a market-rate replacement. If that replacement costs more than your current salary, the net effect is negative to EBITDA, not positive.
- Founder perks with fuzzy documentation. A trip to a conference is defensible. A week at a resort with your family tagged as a client event is not. Anything personal that lacks clean business rationale gets flagged.
The test is simple: will this expense exist under new ownership at the same level? If the honest answer is “probably,” do not claim it as an add-back. It will cost you credibility on everything else.
How the Quality of Earnings Process Stress-Tests Your Add-Backs
Most buyers in the lower middle market require a quality of earnings report before closing. The QoE firm is hired by the buyer and is specifically looking for add-backs that do not hold up.
The QoE analyst does three things that sellers rarely anticipate:
First, they reconstruct your adjusted EBITDA from source documents, not from your recast. Bank statements, invoices, payroll records. Every add-back gets traced back to a primary document.
Second, they test non-recurrence. They look at three to five years of history. If a “one-time” expense pattern-matches to prior years, it gets reclassified as recurring.
Third, they normalize owner compensation based on actual market data. They use published compensation surveys for your company’s revenue tier and industry. If your replacement cost is higher than your current draw, that adjustment flows through to adjusted EBITDA in a way that hurts your number.
Add-backs that fail the QoE review get recast. If the recast is material, buyers use it to retrade. The period between LOI and close is where most value erosion happens, and a failed add-back schedule is one of the most common causes.
Software Equity Group’s research shows SaaS valuations averaged 5.4x EV/Revenue in recent quarters. At those multiples, a $200K add-back that gets rejected during QoE costs you over $1M in exit proceeds. That math gets founders’ attention.
How to Prepare Your Add-Back Schedule Before You Go to Market
The goal is to get to a number buyers believe before they start diligence, not after. A recast that survives diligence is worth more than an aggressive one that gets cut.
Three things to do now:
Document the story behind every add-back. For each item, you need: the expense category, the amount, the year it occurred, why it is non-recurring, and supporting documentation (invoice, legal filing, payroll record). Do not present a number. Present a file.
Run a conservative self-test. Remove any add-back where a sophisticated buyer could make a reasonable argument that the expense continues under new ownership. Defending a questionable add-back in diligence is not worth the multiple erosion it creates when the entire schedule gets scrutinized.
Normalize compensation carefully. Look up what a CEO or executive with your title would earn at a company of your size and stage. Use a third-party source. Buyers will. The spread between what you pay yourself and what a hired replacement costs is the only defensible adjustment for owner compensation.
The best position going into diligence is one where your QoE looks exactly like your recast. Surprises in diligence almost always go against the seller. Getting your valuation multiple right starts with an honest add-back schedule, not an optimistic one.
Frequently Asked Questions
What is the difference between EBITDA and adjusted EBITDA in a business sale?
EBITDA is earnings before interest, taxes, depreciation, and amortization. Adjusted EBITDA adds back non-recurring or owner-specific expenses to show normalized profitability under a new owner. The difference between the two is the add-back schedule, which buyers scrutinize in detail during due diligence.
How much can EBITDA add-backs affect my business valuation?
Add-backs can significantly shift enterprise value at any multiple. At a 5x EBITDA multiple, every $100K of accepted add-backs increases your exit proceeds by $500K. The risk is that add-backs buyers reject in diligence can trigger a retrade, reducing the headline price you agreed to at LOI.
Do buyers always do a quality of earnings report?
Most institutional buyers, including private equity firms and strategic acquirers, require a QoE for any deal above $2M to $3M in enterprise value. Smaller marketplace transactions may skip it, but any serious buyer for a SaaS company will conduct some form of financial verification. The QoE is specifically designed to stress-test your add-back schedule.
Can I include projected cost savings as an EBITDA add-back?
No. Projected cost savings are not add-backs. An add-back must reflect an actual expense that has already occurred and will not recur under new ownership. Future savings belong in the buyer’s own investment thesis, not in your adjusted EBITDA. Buyers who include them will discount elsewhere to compensate.
What documentation do I need to support my EBITDA add-backs?
For each add-back, you need primary source documentation: invoices for legal and consulting costs, payroll records and market compensation data for owner salary adjustments, and bank statements for personal expense items. The QoE firm will trace every add-back back to a source document. If you cannot produce one, assume the add-back will be rejected.
Next Steps
If you are preparing for a sale, your add-back schedule is one of the first things I review. Let’s look at what you have and what buyers will actually credit.