Key takeaways
- Four families are enough: profitability, cash, working capital requirement and payment delays.
- Gross margin measures what is left to cover fixed costs once direct costs are paid.
- The working capital requirement (WCR) is the cash tied up by inventory and receivables.
- Days sales outstanding (DSO) links invoicing directly to available cash.
- A useful dashboard fits on one page and is re-read on the same dates each month.
Running a small business without numbers is like driving by the rear-view mirror: you see problems only once they are behind you. SME financial metrics exist to see what is coming, not to describe the past. The annual profit-and-loss statement and the balance sheet filed with the Central Balance Sheet Office of the National Bank of Belgium give a complete picture, but one that arrives too late to act on. This article keeps six numbers you can track yourself, month after month, with their formulas and a manageable dashboard.
The point is not to line up ratios to look sophisticated. Each metric answers a concrete question a business owner actually asks: am I making money, can I pay at month-end, and how much cash does my activity tie up.
Why track financial metrics in an SME
A profitable SME can run out of cash and fail; a loss-making one can survive for months on its cash reserves. Profitability and liquidity are two distinct dimensions, and no single figure ever covers both. That is the reason for a small set of metrics rather than one headline number.
The right number of metrics is the one you actually re-read. Six numbers kept up to date beat twenty ratios calculated once and forgotten. What counts is consistency and comparison over time: a metric only means something against its value last month or last year.
Profitability metrics: gross margin and net margin
Gross margin is the first number to know. It equals revenue minus the direct cost of sales (goods purchased, materials, direct subcontracting), divided by revenue. It shows, per 100 euros sold, what remains to cover fixed costs: rent, administrative salaries, insurance. A gross margin eroding while revenue grows is a warning sign that volume alone hides.
Net margin is calculated after all charges: it is net profit divided by revenue. It tells how much the business actually keeps of every euro invoiced. Comparing it period to period reveals whether growth creates value or only activity.
Profitability metrics to keep
Gross margin
(Revenue − direct cost of sales) / revenue. What is left for fixed costs.
Net margin
Net profit / revenue. What the business keeps after all charges.
Revenue per customer or product
Spots concentration: a customer that weighs too much is a risk, not a strength.
Cash and liquidity: being able to pay on time
Net cash is the balance genuinely available: money in the bank and in hand, less short-term financial debt. It is the most closely watched metric in an SME, because a cash shortfall halts activity even when the order book is full.
The current ratio completes the view. It divides short-term assets (inventory, receivables, cash) by short-term liabilities. Above 1, it means the business has, on paper, enough to meet its near-term obligations; below 1, it signals a tension to watch closely. To turn this into a habit, regular bank reconciliation keeps the real balance in sight — see Bank reconciliation: automating payment matching.
The working capital requirement (WCR)
The working capital requirement is probably the most misunderstood and most useful metric. It measures the cash the activity permanently ties up: inventory not yet sold plus receivables not yet collected, minus supplier payables not yet paid. Concretely, it is what you advance to run the business before you are paid.
A rising WCR absorbs cash without the result showing it: the business looks profitable yet runs short of cash. Conversely, reducing the WCR — collecting faster, negotiating supplier terms, trimming inventory — frees cash without selling a single euro more. It is an internal, actionable lever, often faster than winning new business.
Payment delays: DSO and DPO
Days sales outstanding (DSO) is the average number of days between issuing an invoice and collecting it. It is calculated by dividing outstanding receivables by revenue including VAT for the period, multiplied by the number of days in that period. It is the direct link between your invoicing and your cash: every day saved on DSO is cash in sooner.
Its counterpart is DPO (days payable outstanding), the average time you take to pay suppliers. Read together, these two delays describe your cash cycle: if you collect from customers later than you pay suppliers, you finance the gap out of your own cash.
| DSO — customers | DPO — suppliers | |
|---|---|---|
| Measures a collection delay | ||
| Measures a payment delay | ||
| Reducing it improves cash | ||
| Extending it (reasonably) improves cash |
In Belgium, payment delays between businesses are framed by law, which bounds the room to negotiate on DPO. The framework and its limits are detailed in Payment terms between businesses in Belgium. On DSO, e-invoicing and structured reminders shorten the cycle: see Reducing late payments.
Invoices sent faster, collected sooner
YouInv issues your invoices in Peppol format, tracks payments and automates reminders: a shorter DSO with no extra effort.
Building a simple dashboard
A dashboard needs no business-intelligence tool: one page is enough, re-read on the same dates. The rule is to set a cadence per family of metrics and stick to it, so the variances read for themselves.
- 1
Every week
WeeklyCash position and expected collections. The short term is watched closely.
- 2
Every month
MonthlyNet cash, DSO, DPO and revenue. The core of steering.
- 3
Every quarter
QuarterlyGross margin, net margin and working capital requirement, which move more slowly.
Automation changes one thing: the freshness of the numbers. A dashboard fed by hand is always late and often wrong. When invoicing, collection and bank reconciliation live in the same tool, DSO and cash are calculated on their own, up to date. That is the condition for these metrics to serve decisions rather than describe the past.
Further reading
- Managing an SME's cash: tracking and forecasting: building a forward cash plan.
- Payment terms between businesses in Belgium: what the law frames on DPO.
- Reducing late payments: the levers to shorten DSO.
For the standardised reading of annual accounts, the reference in Belgium remains the Central Balance Sheet Office of the National Bank of Belgium, which collects and publishes the accounts filed by businesses.
Which financial metrics should an SME track?
The financial metrics that matter for an SME fall into four families: profitability (gross and net margin), liquidity and cash, working capital requirement (WCR), and customer and supplier payment delays (DSO and DPO). Tracking one number per family is enough to keep a readable dashboard.
How do you calculate gross margin?
Gross margin is the difference between revenue and the direct cost of sales. As a rate, it equals (revenue minus cost of sales) divided by revenue. It measures what is left to cover fixed costs once the direct costs of production or purchasing are paid.
What is the working capital requirement (WCR)?
The working capital requirement is the cash a business must advance to fund its operating cycle: inventory and receivables, minus supplier payables. A high WCR ties up cash; reducing it frees cash without increasing revenue.
What is DSO, or days sales outstanding?
DSO (days sales outstanding) is the average number of days between issuing an invoice and collecting it. It is calculated by dividing outstanding receivables by revenue including VAT, multiplied by the number of days in the period. The lower it is, the faster the business turns sales into cash.
How often should you track financial metrics?
A monthly cadence suits cash and payment delays, which are more short-term sensitive, and a quarterly cadence suits margins and WCR, which move more slowly. What matters is consistency: the same set of metrics read on the same dates makes the variances legible.
