In a service business, you don't sell a product; you sell time, expertise, and capacity. That changes which numbers matter. Revenue tells you how busy you are. These five tell you whether being busy is actually worth it.
1. Effective hourly rate
Take the revenue you actually collected and divide it by the hours it really took, including the unbilled ones: scoping, revisions, admin, the work you wrote off to keep a client happy. That's your effective rate, and it's almost always lower than your headline rate. It's the single clearest answer to a simple question: what is an hour of your team's time genuinely worth once reality is priced in?
2. Utilization
Of the hours your team is available, what share is spent on billable or productive work? Utilization is the engine of a service business, because most of your costs (salaries) are fixed while revenue moves with billable hours. Run it too low and you're paying for idle capacity. Run it too high and you're heading for burnout, slipping quality, and turnover. The goal is a healthy band, not 100%.
3. Revenue per employee
Total revenue divided by headcount. It's the cleanest read on whether adding people adds profit or just cost. When you're deciding whether to hire, this number tells you if your current team is being leveraged well, or whether another salary will simply spread the same work more thinly.
4. Margin by client and service line
Not all work is equally profitable, and the blended average hides it. One service line might carry the firm while another quietly loses money on every engagement. The same is true of clients: the biggest is rarely the most profitable once you account for the hours they actually consume. Break margin down far enough to see which work to do more of, and which to reprice or let go.
5. Cash flow and runway
Service businesses live and die on timing. Payroll goes out every two weeks. Clients pay on net-30, sometimes net-60. You can be profitable on paper and still scramble to make payroll, because the profit is sitting in unpaid invoices. Knowing your runway, and forecasting cash a couple of months ahead, is what turns a stressful quarter into a calm one.
The pattern across all five: in a service business, profit hides in time and timing, not in the top line. The firms that thrive are run by owners who can answer these five questions on demand, not the ones simply chasing a bigger number at the top of the page.
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