The Revenue Illusion
Agency leaders track revenue religiously. Client A is 25% of revenue. Client B is 18%. Client C is 12%. Revenue concentration is a standard metric.
But revenue is an illusion when it comes to profitability. A client generating €500,000 in revenue at a 40% margin is worth more than a client generating €800,000 at a 15% margin. Yet most agency dashboards only show the €800,000.
Why This Happens
Scope creep. Client expectations expand slowly. An initial retainer of €15,000/month grows to €22,000/month in delivered value — but the invoice stays at €15,000. Nobody raises a change order because "it is easier to just do it."
Pricing at the start, not the middle. You price a retainer based on estimated hours. Six months later, the work has changed. The scope has doubled. The price has not moved.
Account management overhead. Some clients consume disproportionate management time. Late approvals. Last-minute briefs. Weekend requests. Constant revisions. These costs rarely appear in project profitability reports because they are not tracked as project hours.
Payment terms. A client paying on 90 days is costing you cash flow. If your WIP cycle is 60 days and their payment terms are 90 days, you are financing 30 days of their operations out of your bank account.
The Client Profitability Framework
Here is how to analyse client-level profitability:
Step 1: Calculate true cost per client. Direct cost (people hours allocated to the client) plus allocated overhead (proportional share of rent, technology, management time).
Step 2: Compare against revenue. Client profit = revenue minus true cost. Express as a percentage.
Step 3: Rank all clients. Not by revenue. By profit margin. You will be surprised by the order.
Step 4: Identify the pattern. Your most profitable clients typically share characteristics: clear scope, reasonable timelines, senior point of contact, prompt payments. Your least profitable clients often share a different pattern: scope creep, junior contacts, late payments, constant revisions.
Step 5: Take action.
- Clients above target margin: protect and grow the relationship.
- Clients below target margin: re-scope, re-price, or re-evaluate.
- Loss-making clients: exit gracefully. A client that costs you money is not a client — it is a liability.
What Good Looks Like
For most agencies, client-level margins should sit between 35% and 55%. Below 30%, you have a problem. Above 60%, you are either underpricing (which will attract competition) or you have a genuinely differentiated offering.
The benchmark: top-quartile agencies maintain client-level margins of 45%+ across their portfolio, with no single client below 30%.
*Satyabrata Das provides CFO intelligence with commercial edge to agencies and consultancies. Book a free discovery call →*