EBITDA explained for UK small business owners
EBITDA is Earnings Before Interest, Taxes, Depreciation and Amortisation. It's a proxy for the cash your business's trading activity throws off, stripped of financing structure and non-cash accounting entries. UK SME buyers value on adjusted EBITDA — headline EBITDA plus legitimate owner-benefit add-backs — because it shows what a rational new owner would actually earn.
By Chris at Sell LtdLast updated - EBITDA = Operating profit + Depreciation + Amortisation.
- Adjusted EBITDA also adds legitimate owner add-backs (salary above market, personal expenses, one-offs).
- Buyers value on adjusted EBITDA × sector multiple.
- Watch add-back discipline — over-claiming costs credibility, and credibility is worth ~0.3× on multiple.
How to compute EBITDA from your P&L
There are two starting points. From operating profit: add depreciation and amortisation. From net profit: add interest, tax, depreciation, and amortisation. Both should reconcile. Depreciation and amortisation sit in your notes to accounts under fixed assets and intangibles.
Worked example. Company X: revenue £2.4m, cost of sales £1.4m, gross profit £1m, operating costs £700k (including £80k depreciation, £20k amortisation), operating profit £300k. EBITDA = £300k + £80k + £20k = £400k. That's a 16.7% EBITDA margin — healthy for professional services, thin for SaaS, strong for manufacturing.
From EBITDA to adjusted EBITDA — the add-back framework
Adjusted EBITDA is EBITDA plus every legitimate owner add-back. The ten UK SME add-backs buyers accept:
- Owner salary above market (only the excess).
- Owner pension contributions.
- Owner car / vehicle costs.
- Family wages above market.
- Personal travel and subsistence.
- One-off legal, restructuring, professional fees.
- Non-recurring bad debt or write-offs.
- Discretionary marketing (only if truly one-off).
- Interest (already stripped in EBITDA).
- Depreciation and amortisation (already stripped).
Read the line-by-line detail in the SDE calculator — the add-back philosophy is identical.
What buyers reject as an "add-back"
The naïve add-backs. Every one you propose costs credibility, and sophisticated buyers use over-claiming as a signal to discount your multiple.
- Marketing "we could cut" — no, you couldn't, or you already would have.
- Rent "a buyer can renegotiate" — buyers don't pay you for their own synergy.
- Wages "we'll restructure post-completion" — same problem.
- "Weather / world events" one-offs — nobody's accepting these in 2026.
Why buyers value on EBITDA multiples
Three reasons. First, EBITDA is comparable across businesses regardless of financing or tax position. Second, it's the cash-flow proxy investors need to underwrite a deal quickly. Third, sector-multiple data is deep enough to price consistently — see our multiples database.
EBITDA vs SDE — which should you use?
For UK SMEs under ~£250k EBITDA where a single owner-operator runs the business, SDE (Seller's Discretionary Earnings) is the primary metric. For businesses above that threshold with a management team, adjusted EBITDA is primary. Above £3m EBITDA, DCF becomes a serious cross-check. This isn't a fashion choice — it's what buyers in each segment actually use.
EBITDA sanity checks
- Adjusted EBITDA > 30% of operating profit? Your add-backs are aggressive. Justify each one line-by-line.
- Adjusted EBITDA margin far above sector norm? Buyers assume revenue is one-off or expenses are understated. Prepare an explanation.
- Adjusted EBITDA growing far faster than revenue? Cost cuts are usually behind this. Buyers ask what cuts, and whether they're sustainable.
What to do with your EBITDA number
Once you know adjusted EBITDA, plug it into the multi-method valuation calculator. That gives you a defensible range. Then, when you're ready, have Chris draft your Information Memorandum with a valuation-defence memo — the document buyers ask for first, and the one most brokers cut corners on.
Frequently asked questions
What does EBITDA mean?
Earnings Before Interest, Taxes, Depreciation and Amortisation. It's a proxy for cash generated by trading activities, stripped of financing structure, tax regime and non-cash accounting entries. Buyers use it because it's comparable across businesses regardless of how they're financed or how much capex they've booked.
How do I calculate EBITDA from my P&L?
Start with operating profit. Add back depreciation and amortisation (both non-cash). If you're starting from net profit, add back interest and tax as well. Then apply owner-specific add-backs to reach 'adjusted EBITDA' — the number buyers value on.
What's the difference between EBITDA and adjusted EBITDA?
Adjusted EBITDA adds legitimate owner add-backs — excess owner salary, personal expenses, one-offs. It's the number a rational new owner would see, without your discretionary spend distorting it. Every UK SME buyer works from adjusted EBITDA, not headline EBITDA.
Is EBITDA the same as cash flow?
No. EBITDA ignores working-capital changes, capex, and tax. It's a starting point for cash flow, not cash flow itself. That's why free cash flow (EBITDA − change in working capital − capex − tax) matters for DCF valuations.
Why do buyers value on EBITDA multiples instead of profit?
Because EBITDA is comparable across businesses with different debt loads, tax positions and accounting policies. Two businesses with identical operations but different financing look wildly different on net profit. EBITDA strips that noise out.
What's a good EBITDA margin for a UK small business?
Depends heavily on sector. B2B SaaS: 25–40%. Professional services: 15–25%. Manufacturing: 10–18%. Hospitality: 10–15%. Retail: 5–12%. Below-sector-average margin drags your multiple; above-sector lifts it.
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