2026 – 10 min read
When you begin conversations with M&A advisers, accountants, or potential buyers about selling your business, one term will appear in virtually every discussion: adjusted EBITDA. It will likely be the basis on which a buyer will determine how to value your business, the figure buyers will scrutinise most aggressively during due diligence, and ultimately the number that determines how much money lands in your account at completion.
Yet for most business owners, adjusted EBITDA and the process of arriving at it remains opaque. What exactly is being added back? What gets taken away? Who decides, and how do buyers respond? These are not abstract accounting questions. They are the difference between a valuation that reflects the true earning power of the business you have spent years building, and one that significantly undersells it.
This guide breaks down the full picture: what EBITDA is, how it gets adjusted, and why the quality of those adjustments has a direct bearing on your sale price.
Starting Point: What Is EBITDA?
What is EBITDA? EBITDA stands for Earnings Before Interest, Taxes, Depreciation, and Amortisation. It is calculated by taking your net profit and adding back four specific items:
- Interest – the cost of any debt financing, which a new owner may not carry
- Tax – removed because tax positions vary by owner, jurisdiction, and deal structure
- Depreciation – a non-cash accounting charge on tangible assets
- Amortisation – a non-cash charge on intangible assets such as goodwill or intellectual property
The logic is straightforward: EBITDA attempts to isolate the underlying operating profitability of a business, stripped of financing decisions and accounting conventions that differ from one owner to the next. It gives buyers a cleaner basis for comparison across different businesses and deal structures.
For a business generating £500,000 in net profit, adding back £40,000 in interest, £80,000 in depreciation, and £30,000 in amortisation produces an EBITDA of £650,000. At an 5x multiple, that is the difference between a £2.5 million and a £3.25 million valuation — before any further adjustments are even considered.
Why Raw EBITDA Is Never the Final Number
Here is what many business owners do not fully appreciate until they are deep into a sale process: EBITDA as reported on your accounts is almost never the number a buyer uses to value your business. It is the starting point, not the destination.
The reason is that privately owned businesses by their nature contain expenses, arrangements, and accounting treatments that reflect the priorities of their owners rather than the economics of the underlying business. A buyer is not acquiring your personal tax strategy or your historic investment decisions. They are buying a stream of future earnings, and they want to understand what that stream truly looks like on a normalised, sustainable basis.
That process of normalisation produces what is known as adjusted EBITDA, or normalised EBITDA. The two terms are used interchangeably in practice. It is calculated by taking your reported EBITDA and applying two types of adjustments: addbacks, which increase the figure, and takebacks (sometimes called negative adjustments), which reduce it.
Getting this right and being able to defend every line item to a sceptical buyer is one of the highest-value activities in any sale preparation process.
Addbacks: What Gets Added to EBITDA and Why
Addbacks are items that have reduced your reported EBITDA but that a buyer would not expect to incur once they own the business. They represent genuine economic earnings that your income statement has obscured.
Owner and Director Remuneration Above Market Rate
This is consistently the largest and most commonly encountered addback in owner-managed businesses. If you are paying yourself a salary of £350,000 but a professional CEO replacing you in the role would command £150,000 in the market, the £200,000 difference is a legitimate addback. It reflects the fact that your earnings have been understated some of what appears as salary expense is in reality profit extraction.
The addback is the difference between what you are paying yourself and the genuine market rate for your replacement. It must be carefully documented and benchmarked, because buyers will challenge it. A well-prepared addback schedule with supporting market salary data is far more defensible than a number pulled from thin air.
Related Party and Family Remuneration
Similar logic applies to salaries paid to family members or related parties who are not performing functions at market rates. If a family member is receiving £60,000 per annum for a role that genuinely commands £25,000, the £35,000 difference is addable. If they are receiving a salary for no substantive role at all, the entire amount may be addable. As with director remuneration, documentation and objectivity are critical.
One-Off and Non-Recurring Costs
Any cost that has appeared in your historical accounts but will not recur in the normal course of business is a candidate for addback. Common examples include:
- Legal costs arising from a one-off dispute or litigation
- Redundancy costs from a restructuring that is now complete
- Costs associated with a failed acquisition attempt
- One-off professional fees for a specific project
- Damage, theft, or insurance losses with no ongoing exposure
The key test buyers apply is whether the cost is genuinely non-recurring. If your business incurs legal fees of this kind every two or three years, a buyer will argue they represent a recurring cost of operating and will resist the addback. The more isolated and well-documented the event, the stronger the case.
Non-Cash Charges
Certain charges hit your income statement but involve no cash leaving the business. Depreciation and amortisation are already removed in the base EBITDA calculation, but other non-cash items may remain. Share-based compensation, certain provisions, and impairment charges are examples of costs that reduce reported earnings without reflecting real cash outflows. Where these are genuinely non-cash and non-recurring, they are appropriate addbacks.
Personal Expenses Run Through the Business
In owner-managed businesses, it is common for personal or mixed-use expenses to be processed through the company. Vehicles used primarily for personal purposes, personal travel, entertainment with no genuine commercial purpose, personal subscriptions, or home-related costs that appear on company accounts are all potentially addable. This is an area where buyers will look carefully, so the quality of your documentation and the reasonableness of your claims matter enormously.
Above-Market Rent Paid to a Connected Party
If your business rents its premises from a connected entity such as a holding company, a family trust, or the owner personally – and that rent is above the prevailing market rate, the excess is an addback. Conversely, if rent is below market (a common arrangement to increase trading company profits), a takeback may apply. A formal market rent assessment at the point of sale preparation removes ambiguity.
COVID-19 and Exceptional Government Support
For many businesses, the trading years of 2020 and 2021 contain exceptional items in both directions: government grants and furlough income that inflated earnings, and lost revenue or exceptional costs that depressed them. In most sale processes today, advisers work with buyers to either exclude those years from the analysis or adjust for the specific impacts on a line-by-line basis. If exceptional support was received, buyers will almost certainly seek to remove it from any earnings they are prepared to pay a multiple on.
Takebacks: What Gets Removed from EBITDA and Why
Takebacks are the adjustments that reduce your adjusted EBITDA below the reported figure. They are less discussed, sellers understandably focus on addbacks, but equally important, because failing to address them proactively creates far more damaging surprises during due diligence.
Below-Market Owner Remuneration
The mirror image of the salary addback: if you are paying yourself significantly below what your replacement would cost, which is a common situation where owners minimise salary in favour of dividends, then a buyer will argue that the business’s true cost base is understated. The cost of hiring a replacement CEO, COO, or key technical expert needs to be reflected in the normalised earnings. If that cost has not been flowing through your income statement, it will be deducted from your adjusted EBITDA.
Under-Investment in the Business
If you have been deferring capital expenditure, underinvesting in headcount, or reducing marketing spend in the run-up to a sale in order to inflate short-term earnings, experienced buyers will identify this pattern quickly. A quality of earnings analysis will benchmark your cost base against industry norms and prior periods. Where systematic under-investment is identified, buyers will apply a normalisation deduction reflecting the ongoing expenditure they believe is required to maintain the business at its current revenue level.
This is one of the most important reasons why artificial short-term margin improvement ahead of a sale is counterproductive. The uplift in EBITDA is visible; so is the mechanism used to achieve it.
One-Off Revenue or Non-Recurring Income
Just as one-off costs are addable, one-off income is removable. If your earnings for a particular year include a large one-time contract, a government grant, a property disposal gain, or any other income that will not repeat, a buyer will adjust this out of their forward earnings base. Even if you believe the income is representative, the burden of proof is on the seller and buyers will err toward conservatism without strong evidence of recurring potential.
Pro-Forma Adjustments for Known Cost Increases
If you are aware of costs that are about to increase such as a lease renewal at a higher rent, a salary review that has been deferred, or a supplier contract repricing then buyers will ask you to reflect these in a normalised cost base. Ignoring them does not remove the risk; it simply means the buyer will price it in anyway, often more aggressively than the real number warrants.
The Quality of Earnings Process: How Buyers Test Your Adjustments
Once a buyer has received your adjusted EBITDA schedule, they will commission a Quality of Earnings (QoE) report from their own advisers. This is an independent financial due diligence exercise designed to verify or challenge every adjustment you have presented.
A well-prepared QoE report will:
- Reconcile your adjusted EBITDA back to audited or reviewed accounts
- Test the recurrence and sustainability of each addback
- Identify any costs or revenue items you have not addressed
- Assess the quality of revenue, its mix, concentration and contractual basis
- Evaluate working capital normalisation and cash conversion
The QoE process is where deals come under the most financial pressure. Adjustments that were presented without documentation, assumed without benchmarking, or simply optimistic will be challenged or disallowed. Each disallowed adjustment reduces the EBITDA on which the buyer calculates their offer price at the multiple already agreed, in principle.
This is why the preparation of your adjusted EBITDA schedule is not an internal exercise to be delegated to your bookkeeper. It is the foundation of your valuation, preparing and presenting it well is a serious way of increasing business valuation, and it should be built with the same rigour a buyer will apply when they test it.
A Practical Illustration: From Reported to Adjusted EBITDA
To make this concrete, consider a simplified example of a UK-based professional services business preparing for sale.
Reported EBITDA: £820,000
Addbacks applied:
- Owner salary above market rate: +£180,000
- Spouse salary for non-executive role: +£45,000
- One-off legal dispute costs: +£38,000
- Personal vehicle costs: +£14,000
- Non-recurring IT migration project: +£22,000
Total addbacks: +£299,000
Takebacks applied:
- Replacement FD cost not currently in P&L: -£75,000
- One-off project revenue unlikely to repeat: -£60,000
- Below-market rent from connected landlord (normalisation): -£30,000
Total takebacks: -£165,000
Adjusted EBITDA: £954,000
At an 5x multiple, reported EBITDA produces a valuation of £4.10 million. Adjusted EBITDA produces £4.77 million. The preparation work – identifying, documenting, and presenting £134,000 of net adjustment — has generated £670,000 of additional enterprise value.
That is not a hypothetical outcome. It is the kind of result that disciplined sale preparation delivers, consistently.
Why This Work Cannot Be Done at the Last Minute
The addback and takeback process is most powerful, and most defensible, when it is built into a multi-year preparation programme rather than assembled in the weeks before a sale process launches.
Buyers are significantly more comfortable with adjustments that can be evidenced over two or three trailing years of accounts. A single-year addback looks opportunistic. The same adjustment appearing consistently across a three-year earnings bridge looks structural. The former invites challenge; the latter invites acceptance.
Furthermore, certain improvements, replacing a below-market replacement cost with an actual hire, converting personal vehicle arrangements to personal drawings, moving to reviewed financials, take time to implement and embed, and must be in place long enough to appear in the financial record before a sale.
If you are thinking about selling within the next three years, the time to begin this work is now.
How We Help Business Owners Navigate This Process
This is precisely the work our corporate finance team does with clients preparing for exit. We work alongside you, typically 18 to 36 months before a transaction, to build a fully documented, thoroughly defensible adjusted EBITDA schedule that presents your business in its best accurate light.
Our advisory process covers:
Exit Readiness Assessment – We review your current financial position, identify likely addback opportunities, and flag areas where takebacks may apply that you are not yet aware of. This gives you a realistic view of where your adjusted EBITDA stands today and what is achievable through structured preparation.
Normalised EBITDA Construction – We build a detailed, line-by-line adjusted EBITDA schedule supported by documentation, market benchmarking, and narrative justification for each adjustment. This becomes the foundation of your information memorandum and your negotiating position with buyers.
Quality of Earnings Preparation – We prepare you for the buyer’s QoE process before it begins, stress-testing every adjustment and identifying areas where documentation needs to be strengthened. Clients who have been through this process with us typically experience fewer surprises and fewer post-QoE valuation reductions.
Buyer Positioning and Process Management – We identify the buyer universe most likely to pay a premium for your specific business, manage the information flow and negotiation process, and ensure the adjusted EBITDA you have built is presented in the most compelling context possible.
The difference between a business that sells for a market multiple and one that achieves a premium is rarely the business itself. It is the quality of the financial narrative around it and the credibility of the advisers presenting it.
Frequently Asked Questions
How far back should my adjusted EBITDA schedule go? Most buyers and their advisers want to see a minimum of three years of adjusted earnings. This allows them to assess consistency and trend. If your business has changed materially in recent years, a shorter window may be defensible but the reasoning will need to be clearly articulated.
Can I present addbacks the buyer hasn’t asked for? Yes, and you should. A proactive, well-structured addbacks schedule presented early in the process demonstrates preparation and professionalism. It also anchors the conversation. Buyers who receive a credible addback schedule from the outset are less likely to construct an aggressive counter-schedule of their own.
What happens if a buyer challenges an addback during due diligence? This is normal and should be anticipated. If the addback is well-documented and defensible, your advisers will support it through the QoE process. If it is challenged successfully, the adjusted EBITDA reduces accordingly, and the offer price adjusts at the agreed multiple. This is why the quality of preparation matters so profoundly.
Is adjusted EBITDA the same as seller’s discretionary earnings (SDE)? Not exactly. SDE is a similar concept used predominantly in smaller business transactions (typically sub-£1 million in earnings) and adds back the full owner compensation rather than just the above-market element. EBITDA and adjusted EBITDA are the standard metrics in mid-market M&A, which is where most of our clients operate.
The Bottom Line
Adjusted EBITDA is not simply an accounting construct. It is the language in which your business’s value is negotiated, and understanding it, along with every addback and takeback that shapes it, is one of the most commercially important things you can do as a business owner considering a sale.
The owners who achieve the strongest outcomes are those who approach this process with rigour, preparation, and experienced advisory support. They know their numbers. They can defend them. And they enter a sale process from a position of confidence rather than uncertainty.
If you are considering a sale in the next one to four years and want to understand where your adjusted EBITDA stands today, and what is achievable through structured preparation, we would welcome the conversation.