The Utilisation Math Agency Pitch Decks Never Show You

Every agency has a number it watches more closely than any client metric. It's called utilisation: the percentage of a person's paid hours that can be billed to a client. It appears in every internal board meeting and no external pitch deck, and once you understand it, agency pricing stops being mysterious.

How the math works

A full-time employee gives an agency roughly 1,800 working hours a year. Nobody bills all of them. There are internal meetings, training, pitching, admin, holidays, and the gaps between projects. A well-run agency lands somewhere between 60% and 75% billable. The rest is cost the agency carries — and passes on.

Now layer the hourly rate. If a designer costs the agency £35 an hour fully loaded and bills at £120, the gap isn't greed, exactly. It's covering the unbillable 30%, the office, the account team, the software stack, the new-business function and the margin. The rate you pay is a tax on everything the agency is, not just the person doing your work.

What lands on your project

Here's the question that matters: of the money you hand over, how much converts into hours of skilled attention on your business? Work it backwards and the answer is sobering. On a typical retainer, by the time you subtract account management, internal coordination, reporting and the overhead recovery baked into every rate, the share of your fee that becomes actual production and thinking on your account is commonly less than half.

• Account management: hours spent talking about the work rather than doing it.
• Coordination: designers briefing developers briefing copywriters, each handoff billed.
• Reporting: assembling the deck that justifies the invoice.
• Overhead recovery: the office and the pitch team, amortised into your rate.

None of this is a scandal. It's the honest cost structure of a labour business. The scandal would be pretending it isn't there.

Why this is suddenly worth knowing

For as long as skilled hours were the only way to produce quality work, utilisation math was just the weather. You couldn't escape it by switching agencies, because every agency lived under the same sky. The only variable was how efficiently each one managed its overhead, and you had no way to see that from outside.

What changes everything is when production stops being made of hours. Our pipeline runs 75 AI agents in parallel across research, strategy, design, copy and engineering. There's no utilisation rate because there's nothing idle to recover — no office, no account layer, no pitch team amortised into your price. What you pay for is the work and the judgement wrapped around it. AI does most of the work. Paul reviews everything before it ships.

The question to ask any agency

If you're evaluating a proposal, you don't need to see their books. Ask one question: roughly what share of my fee becomes hands-on production time on my account? A confident shop will give you an honest range. A defensive answer tells you the number is doing exactly what you suspect.

You're not being difficult by asking. It's your money. You're allowed to know how much of it turns into work.