A potential buyer sends their information request. Their adviser starts asking questions. Within the first hour, three specific numbers come up: revenue, EBITDA, and EBITDA margin. The revenue figure you know by heart. The EBITDA margin requires a quick call to your accountant.
That call is worth making. But understanding what the number is actually telling you, rather than what others assume it means, is the more useful place to start.
What is EBITDA margin telling you in a consulting firm?
EBITDA margin divides your EBITDA by revenue and expresses the result as a percentage. In a consulting firm, it shows how much of your fee income remains after staff costs, delivery expenses, and overheads, before interest, tax, depreciation, and amortisation are taken into account. Because consulting is people-heavy rather than asset-heavy, the number is driven mainly by utilisation rates, bill rates, and how senior your delivery mix is.
The Management Consultancies Association publishes a model for what a healthy consulting business looks like that gives a useful structural anchor. A strong firm should carry at least 50% gross margin after direct delivery costs, with admin and overhead consuming around 30% of total costs. Your EBITDA margin is the downstream result of how well your business hits those upstream ratios.
GoCardless illustrates the basic maths simply: a firm with £500,000 in revenue and £50,000 in EBITDA has a margin of 10%. Industry analysis from FullRatio confirms that a 5% to 15% range appears across many industry sectors, but sector context matters considerably. In consulting, two firms can sit at the same EBITDA margin and be very different businesses: one with fifteen clients across three practice areas, another with two clients providing 80% of its fees. The margin number alone cannot tell you which one you are looking at.
Why does EBITDA margin matter for your consulting practice?
For an owner-managed consulting practice, EBITDA margin is the number other parties use to assess your firm. A bank checks it against covenant thresholds when you want to borrow or refinance. A potential buyer treats it as a valuation anchor: consulting EBITDA multiples ranged from 9.7 to 15.2 times between 2020 and 2025, according to FirstPageSage’s 2025 analysis. Your accountant reads it to tell you whether the business is earning what it should.
The reason EBITDA is so widely used in these conversations is that it strips out financing structure, tax position, and ownership model, making firms easier to compare across different legal and capital setups. A buyer’s analyst can put two consultancies with different debt levels and different owner remuneration structures on a common footing.
The difficulty for owner-managed practices is that this apparent comparability can mislead. In a firm where the founder takes drawings rather than a formal salary, EBITDA can look stronger than the underlying business warrants if those drawings are running below what the role would cost to replace. Buyers and informed lenders adjust for this. The adjustment is called normalisation, and it is worth running the calculation on your own numbers before anyone else does.
Where will you actually encounter your EBITDA margin?
You will encounter EBITDA margin in three main contexts: a year-end review with your accountant, a bank or lender assessment when you need to invest or refinance, and any sale or succession process where a buyer wants to understand the business’s real earnings power. Each of those conversations uses the same number to answer a different question, and the context shapes whether the number reads as strong, thin, or unclear.
At year-end, your accountant is typically comparing the margin against prior years and checking whether overhead has crept up relative to fee income. The question is usually about trajectory rather than absolute level.
The lender conversation is different. A bank assessing whether to lend is asking whether the business can service debt without running tight. Lenders will often set covenant thresholds your EBITDA margin cannot fall below for the duration of the facility. Falling below that threshold can trigger a renegotiation or, in some cases, early repayment demands.
In a sale or succession process, a buyer’s Quality of Earnings team will scrutinise the margin more carefully than either of the other audiences. They will look for costs that have been deferred, business development investment that has been cut to inflate the number short-term, and any client concentration that makes the current margin fragile. They will also ask whether the reported EBITDA is consistent with the cash position, which is not always the case.
When should you act on the number, and when should you look past it?
Act on EBITDA margin when it has been falling for two or more consecutive periods, when project-level margins suggest the company figure is being pulled up by one or two high-performing accounts, or when a lender or buyer flags it as a concern. Look past it as a standalone verdict when cash collection is slow, when partner time is underpriced, or when the firm carries lease commitments that EBITDA does not reflect.
EBITDA does not capture debtor days. A practice with a healthy EBITDA margin and slow-paying clients can find itself under working-capital pressure that the headline number completely obscures. A firm with significant capitalised software or long-term lease obligations may also appear in better shape than the economic reality justifies, because EBITDA excludes depreciation and amortisation.
Regulatory obligations add a further layer that EBITDA will not automatically reflect. The ICO’s UK GDPR framework places data protection compliance obligations on any consultancy processing client, employee, or prospect data. A breach or enforcement action creates remediation costs and reputational exposure that may eventually affect fee income, even when the current margin looks fine. Consulting firms that use AI in client delivery, or that serve EU-regulated clients, should also consider the EU AI Act’s obligations for providers and deployers, which can increase documentation and process overhead in ways that take time to show up in the EBITDA line. For practices serving UK regulated financial services clients, the FCA’s operational resilience expectations can similarly raise the cost of delivery.
What should you track alongside EBITDA margin?
The most useful companion to EBITDA margin in a consulting firm is gross margin broken down by project, client, and practice area. Company-level EBITDA can mask a wide spread: a few high-margin engagements pull up the average while others run close to break-even. Segment-level gross margin shows you where the business is actually working and where effort is going in for little financial return.
Beyond gross margin by segment, four indicators help you read the full picture.
Utilisation rate tells you what share of your consultants’ time is being billed. Because staff costs dominate in a consulting firm, a fall in utilisation hits EBITDA quickly. Sustained utilisation across fee-earning staff that drops below 65% is usually worth investigating before it appears in the margin line.
Average bill rate tells you whether your pricing has kept up with the seniority and value of your delivery team. Firms that have not reviewed rates for two or more years often find that real-terms fee income has eroded while costs have continued to rise.
Debtor days measures how long clients take to pay. EBITDA can look fine while debtor days climb, but the cash constraint will eventually catch up with the margin story.
Client concentration is the less visible risk. A margin built on two or three dominant clients is structurally more fragile than a slightly thinner margin spread across ten. If a single client represents more than 25 to 30% of revenue, the EBITDA margin should be read with that context alongside it.
EBITDA margin is a useful reference point. It becomes genuinely useful when you can read it alongside gross margin by segment, utilisation rate, average bill rate, debtor days, and client concentration. If you are heading into a lender conversation, a sale process, or simply want to understand whether the practice is structurally sound, those five numbers together give a far more complete picture than EBITDA margin on its own.
If you want to work through what the numbers are really telling you in your firm, Book a conversation.
