Utilisation, bench and margin: the three numbers that decide a services firm's year

An IT services or consulting firm sells time and expertise. Its revenue arrives as hours billed to clients, and its largest cost is the salaries of the people doing the work. That makes the business unusually easy to explain and unusually easy to get wrong. Three numbers tell you most of what you need to know: how much of your people's available time is billed, how many people are not deployed at all, and how much is left over once you have paid for everyone properly.

Founders often track revenue and headcount closely and look at these three only at the end of a quarter, when it is too late to change them. This article explains how to define each one, how they pull on each other, and how to build a weekly rhythm that catches problems while they are still small.

Billable utilisation: what it is and how to measure it

Billable utilisation is the share of a person's available working time that is billed to a client. The formula is simple:

Billable utilisation = billable hours ÷ available hours

The difficulty is almost entirely in the denominator. Available hours are the hours a person could reasonably have worked in the period: the working days in the month, minus public holidays, minus approved leave, multiplied by the standard working day. If you use a flat figure such as 176 hours a month for everyone, you will punish people for taking the leave they are entitled to and for national holidays nobody could have worked through. The number stops describing how well work was allocated and starts describing the calendar.

The numerator needs equal care. Billable hours should be hours the client has accepted, or will accept, on an invoice. Time spent on internal tools, pre-sales, rework you cannot charge for or training is real work, but it is not billable. Record it, because it explains where the remaining hours went, but keep it out of the billable figure.

Utilisation can be read at three levels: for each person, for each team or practice, and for the firm. The firm-wide figure is the one leaders quote, but the person-level figure is the one you can act on.

The bench: the cost of people not deployed

The bench is the group of billable people who are not currently assigned to paid client work. Some bench is healthy. You need people available to start new projects quickly, and a firm with nobody on the bench will turn down work or burn out its staff. Too much bench, held for too long, is the single fastest way for a services firm to lose money.

The cost of the bench is straightforward to calculate and easy to underestimate. Every person on it carries their full monthly cost, salary, statutory contributions, insurance, equipment and their share of the office, with no revenue against it. Track the bench as a list of named people with the date each one became available, not just as a headcount.

Planning redeployment

For each person on the bench, someone should own a plan with three parts: the next likely project or client, the date they are expected to start, and what happens if that date slips. Review the list weekly. A person who has been on the bench for more than a few weeks with no named opportunity needs a decision, not another week of waiting.

Using bench time well

Bench time is a good moment for upskilling, internal projects and supporting pre-sales, but only if it is planned. Tie any training to skills your pipeline actually needs. A certification nobody is asking for does not shorten the time to redeployment.

Margin by client and by employee

Margin is revenue minus the cost of delivering it. For a services firm the cost that matters most is people, and it must be fully loaded: salary plus employer contributions, benefits, equipment, software licences and a fair share of rent and support functions. Using salary alone flatters every project.

A single firm-wide margin hides most of the useful information. Look at it in two cuts:

• By client. Revenue from the client minus the fully loaded cost of everyone working on that client. This shows which relationships are worth growing, which need a rate revision and which are consuming senior time without paying for it.
• By employee. Revenue billed for a person minus their fully loaded cost. This shows where a strong engineer is billed at a junior rate, or where a senior person is spending most of their time on unbilled work.

A worked example (illustrative figures only)

The following example uses invented numbers to show how the three metrics fit together. It does not describe any real firm.

Take one engineer in a month with 22 working days. There is one public holiday and the engineer takes two days of approved leave, so they have 19 available days. At 8 hours a day that is 152 available hours. They bill 128 hours to a client.

• Utilisation measured correctly: 128 ÷ 152 = 84%.
• Utilisation measured against a flat 176 hours: 128 ÷ 176 = 73%. Same work, same month, an 11-point gap caused only by the denominator.

The client is billed ₹1,800 an hour, so the engineer generates ₹2,30,400 of revenue. Their monthly salary is ₹1,20,000 and the other loaded costs (contributions, insurance, laptop, licences and a share of the office and support teams) add ₹30,000, for a fully loaded cost of ₹1,50,000. Margin on this person for the month is ₹80,400, or about 35% of revenue.

Now suppose the firm has 50 billable people and 5 of them are on the bench, each with a similar loaded cost of ₹1,50,000. The bench costs ₹7,50,000 that month. That is roughly the margin of nine fully billed engineers like the one above, absorbed by five who are waiting for work.

How the three numbers interact

These metrics are not independent. A project ending moves people to the bench, which lowers utilisation that week and lowers margin when the month closes. A new client won at a discounted rate raises utilisation and shrinks the bench while quietly lowering margin. Pushing utilisation towards 100% can look good for a quarter and then show up as attrition, rework and slipping delivery dates.

The practical lesson is to read them together. A rise in utilisation is only good news if margin holds. A smaller bench is only good news if the people came off it onto work priced properly. When one of the three moves, ask what has happened to the other two.

Warning signs and common measurement mistakes

Watch for these patterns in your weekly numbers:

• Utilisation that drifts down by a point or two every week for a month, often a sign that a project is winding down before anyone has planned what comes next.
• The same names on the bench week after week, especially senior people with high loaded costs.
• A large client whose margin falls while its billed hours rise, which usually means unbilled scope or a team that is more senior than the rate assumes.
• Timesheets submitted late or approved in bulk at month end, which makes every other number unreliable.

And avoid these measurement mistakes:

1. The wrong denominator. Not excluding leave and holidays from available hours.
2. Unapproved hours. Counting hours before a manager has checked them. Weekly timesheets approved by the reporting manager give you a figure you can trust.
3. Salary instead of loaded cost. Every margin looks healthier than it is.
4. Averages only. A firm-wide utilisation of 80% can hide one team at 95% and another at 55%.
5. Monthly-only review. By the time the month closes, the bench has already cost you four weeks.

A weekly review rhythm

A useful weekly review takes under an hour if the data is ready. A simple agenda:

1. Timesheets. Confirm last week's timesheets are submitted and approved. Chase the gaps before looking at anything else.
2. Utilisation. Look at each team against its target and at any person well below or well above it.
3. Bench. Go through the named list: who joined it, who left it, and the redeployment plan and date for each person still on it.
4. Pipeline match. Compare the bench and upcoming roll-offs with opportunities likely to close in the next four to six weeks.
5. Margin watch. Check the largest clients and any client whose mix of people or hours has changed. Do the full margin by client and by employee when the month closes.

Keep the same format every week; the value comes from comparing weeks.

Bringing the numbers together

None of this needs complex analytics. It needs approved hours, an accurate calendar of leave and holidays, a clear view of who is billable and who is on the bench, and costs that are fully loaded. When those sit in one system instead of several spreadsheets, the weekly review becomes routine rather than a scramble.

In the Technotrillion suite, weekly timesheets are submitted by employees and approved by their managers, bench and billable staff are visible at a glance, and Techno Command shows profit and loss by client and by employee for leadership. If you would like to see how that works with your own structure, book a demo and we will walk you through Techno Command and the rest of the suite.