Revenue is the number you announce, gross margin is the one that pays the bills. The gap between them separates a business that grows from one that exhausts itself growing.
It is also the calculation most often botched by independents, because it forces you to look at costs you would rather ignore.
Definition
Gross margin is revenue minus the costs directly tied to producing or delivering what was sold. It is expressed in euros or as a percentage of revenue.
The word "directly" is the difficulty. A cost belongs in gross margin if it rises when you sell one more unit.
| Belongs in gross margin | Does not |
|---|---|
| Payment processor fees | Rent, fixed subscriptions |
| Variable hosting | Your computer |
| Affiliate marketing commission | Paid advertising |
| Support if proportional | Annual accountant |
| Cost of goods produced | Training, office tools |
Advertising often surprises people in the right-hand column. It acquires customers, it does not produce what you sell them: it belongs to CAC (customer acquisition cost), which is handled separately.
Benchmarks by model
Gross margin varies enormously with what you sell, and comparing across models is meaningless.
- Digital product, course: 85 to 95 percent. Payment fees dominate.
- SaaS: 70 to 85 percent. Hosting and support weigh in.
- Services: 50 to 70 percent if your time is valued, which it must be.
- Physical product resale: 20 to 50 percent. Stock and logistics eat everything.
A service business showing 100 percent gross margin is one where the founder does not pay themselves. Value your time at the Day rate you would bill, or everything that follows is wrong.
Why it governs everything else
Gross margin is what remains to cover fixed costs, acquisition and your own pay. So it directly determines your Break-even point and the CAC (customer acquisition cost) you can afford.
Two businesses at €5,000 monthly revenue have nothing in common if one produces €4,500 of margin and the other €1,500. The first can invest, the second survives.
Frequently asked questions
Gross margin or net margin?
Gross margin for day-to-day steering, because it reacts to every pricing or cost decision. Net margin, after fixed costs and tax, to know what you actually earn. Both, never one instead of the other.
How do I improve it without raising prices?
By cutting variable costs: renegotiating payment fees above a certain volume, optimising what consumes hosting, automating repetitive support. Every point gained applies to all future sales.
Should unpaid invoices count?
Yes, as a deduction from revenue. A sale not collected is not a sale. If unpaid invoices exceed one or two percent, the subject belongs to Dunning before it belongs to accounting.
Does a high gross margin guarantee profitability?
No. A digital product at 95 percent margin still loses money if its CAC (customer acquisition cost) exceeds the sale price. Margin says what remains per sale, not how many sales you will make or at what cost.