Agency Unit Economics: Why Busy Studios Run Out of Money
Revenue is up, the team is at capacity, and the bank balance is falling. Here are the four numbers that explain it.
A service business can be busy, well-reviewed and growing while quietly losing money on most of its work. Revenue hides it, because the losses are distributed across projects that each looked fine at signature.
The four numbers
- Utilization: billable hours divided by available hours. Sustained above about 80% means no capacity for sales, improvement or illness — a fragile system that looks efficient right up to the moment it breaks.
- Effective hourly rate: what you actually invoiced for a project divided by every hour it consumed, revisions and calls included. This is almost always lower than your quoted rate, and the gap is where the business lives.
- Realization: invoiced value against the value of work performed. Discounts, write-offs and unbilled extras all land here.
- Client concentration: the percentage of revenue from your largest client. Above a third, you do not have a business, you have a job with extra admin.
Where the money leaks
- Unbilled revisions accepted to keep the relationship pleasant. Each one is small; the annual total rarely is.
- Pre-sales work — proposals, scoping calls, speculative mockups — treated as marketing rather than counted as cost.
- Project management time nobody quoted for, which on complex work is a substantial share of total hours.
- The 'quick favour' that recurs monthly and was never added to the retainer.
Fixing it without a price rise
Before raising prices, cap revisions explicitly in the proposal, bill the discovery phase, and stop competing for the clients where your effective rate is worst. Most agencies find the profitability problem was concentrated in a handful of relationships and a habit of absorbing scope — both fixable without a single difficult pricing conversation.
- 80% utilization as a sustainable ceiling
- 33% client concentration danger line
- 1 effective rate tracked per client
Frequently asked questions
Should we move to value-based pricing?
It works where you can point to a measurable outcome and are willing to be accountable for it. It fails where the outcome depends mostly on the client's own execution. Fixed-scope pricing with honest change control solves most profitability problems without that dependency.
What utilization should we target?
For a small team, 65 to 75 percent is healthy — the remainder is sales, admin, improvement and slack for reality. Targets above 85 percent describe a team with no capacity to win the next project.
More on this topic: Growth & Strategy.
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