One of the most common problems we detect when working with startups and SMEs in the growth phase is not, paradoxically, the lack of sales or commercial activity. The real problem is much more subtle and, at the same time, much more critical: the lack of real financial visibility over the business.
Many companies experience sustained revenue growth year after year, onboarding new customers, launching new products or services, and yet they are not clear about:
- What lines of business are really profitable,
- Which consume more resources than they generate,
- Where recurring treasury tensions originate.
This situation is not the result of intentional mismanagement, but rather of a structural lack in financial analysis: when a company operates with multiple lines of business, products or customer segments, the aggregated accounting result hides more than it reveals.
It is possible to have positive global EBITDA while some lines systematically destroy value, offset by others that work exceptionally well.
The first step to gaining genuine financial control is not to implement complex business intelligence systems, but to correctly calculate the margin per business unit. In this article, we explain how to do it with rigor, clarity and practical utility.
What do we mean by financial visibility?
Financial visibility goes beyond the annual accounting result. It means being able to respond with data to critical questions:
- What product, service or segment generates real margin?
- Where is value being silently destroyed?
- What type of growth is profitable and which only increases turnover?
- How will a business decision impact future profitability?
To answer these questions, you need to disaggregate financial information. And margin per business unit is the most powerful tool for achieving this.
What is margin per business unit?
It is the specific profitability of each line of activity (product, service, segment or channel) calculated independently of the overall result.
This approach allows:
- Objectively compare the profitability of different lines,
- Allocate resources to what really creates value,
- Make decisions based on profitability, not volume.
The three margin levels: when to use each one
Not all margins are good for the same thing.
1. Gross margin
Formula: Gross Margin = Revenue — Direct Costs
What are direct costs? They are the ones that would disappear if we eliminated the business unit. Examples:
- Personnel assigned exclusively to a project,
- product-specific materials or licenses,
- Subcontracting linked to a specific service.
What is it for?
- Quick diagnosis of operational profitability,
- Identification of lines with poor technical performance,
- Basis for initial pricing or discontinuation decisions.
2. Contribution margin
Formula: Contribution Margin = Revenue — Variable Costs
What are variable costs? Those that vary proportionately with volume: commissions, materials per unit, billable hours, etc.
Important: A cost can be direct but fixed (e.g., a developer 100% dedicated to a product). In that case, it goes into the gross margin, but not the contribution margin.
What is it for?
- Evaluate the scalability of a model,
- Decide whether to accept an additional order (if it covers your variable costs),
- Analyze the deadlock by line of business.
3. Operating margin per unit
Formula: Operating Margin = Gross Margin — Imputed Indirect Costs
What are indirect costs? Shared expenses that are not eliminated when closing a line: management, finance, corporate marketing, rent, systems, etc.
How to impute them? Use objective and consistent criteria, such as:
- Percentage of income,
- Number of employees on the line,
- Hours of dedication from the support team
What is it for?
- Evaluate long-term strategic viability,
- Decide whether to keep, scale or close a line,
- Calculate the true opportunity cost.
Step-by-step methodology: how to calculate it
Step 1: Define your business units
There is no universal rule. Ask yourself: “At what level of breakdown can I make better decisions?”
Common options:
- By product or service,
- By customer segment (SME, corporate, public),
- By channel (online, offline, partners),
- By geography.
Step 2: Accurately allocate revenue
- It includes only directly attributable income,
- It correctly attributes discounts, returns and rappels to the line that originates them,
- In SaaS models, allocate recurring revenue per specific subscription.
Step 3: Rigorously identify direct costs
Apply this rule:
“If I disappear this line, does this cost cease to exist?”
If the answer is yes, it's direct. If not, it's indirect.
Step 4: Decide whether to charge indirect costs
- For tactical decisions (pricing, efficiency): gross margin is enough.
- For strategic decisions (investment, closing): you need operating margin.
Step 5: Calculate and Compare
Use simple tables like this:
Expanded practical example: Beyond gross margin
Let's consider a company with two lines:
- Line A: Recurring SaaS Service
- Line B: Tailor-made Projects
Data:
Calculations:
Gross margin:
- A: 100,000 — 40,000 = 60,000€ (60%)
- B: 120,000 — 90,000 = 30,000€ (25%)
Contribution margin:
- A: 100,000 — 10,000 = 90,000€ (90%) → very scalable
- B: 120,000 — 30,000 = 90,000€ (75%) → less scalable
Operating margin:
- A: 60,000 — (45% × 50,000) = 60,000 — 22,500 = 37,500€
- B: 30,000 — (55% × 50,000) = 30,000 — 27,500 = 2,500€
Strategic Conclusion:
- Although B makes more money, A generates 15 times more operating margin.
- Scaling B without reducing direct costs would deteriorate overall profitability.
- Line A is an ideal candidate for investment; Line B requires in-depth review.
Common Mistakes to Avoid
- Confusing billing with profitability: more revenue ≠ more value.
- Misclassify costs: ascribe as direct shared expenses (e.g., salary of a CEO who serves all lines).
- Allocate indirect costs arbitrarily: without objective criteria, the analysis loses validity.
- Analyze only the overall result: it hides critical problems.
- Don't update the analysis: margins change over time. Review monthly or quarterly.
How to use this analysis to make decisions
With per-unit margins, you can:
- Adjust prices: climb in lines with low gross margin if the market allows it.
- Optimize costs: renegotiate subcontracts or automate processes on inefficient lines.
- Allocate resources: prioritize investment in lines with high operating margin.
- Decide closures: discontinue lines with persistent negative operating margin.
- Plan scenarios: project the impact of 20% growth in Line A vs. Line B.
Conclusion: Profitability, not turnover, is the engine of sustainable growth
Growth without profitability is a dangerous illusion. Before climbing, make sure you're multiplying value, not just activity.
Calculating margin by business unit does not require complex technology, but rather analytical rigor and discipline. It is one of the most powerful tools for building a healthy, agile company ready to grow in a sustainable way.
How Intelectium can help you
At Intelectium, we accompany growing startups and SMEs to implement financial systems oriented to decision-making. Our external CFO service includes:
- Definition of relevant business units,
- Design of cost allocation criteria (direct and indirect),
- Implementation of margin dashboards per line,
- Training the management team in the interpretation and use of analysis.
We help you go from “we know how much we bill” to “we know exactly where and how we create value”.
If you need to gain real financial visibility over your business, contact us for a free initial evaluation.
