Improve processes and tools first
When it may fit: Non-billable time is large.
Evidence needed: Time tracking beyond billable.
Trade-off: Takes time to show results.
Professional Services Intelligence Brief
How to Evaluate Whether a Firm Needs More Staff or Better Processes
When a firm feels overloaded, the instinct is to hire. But the work may be taking longer than it should, and a hire adds cost before it adds capacity.
1. The business problem
Do we need more people, or do we need to work differently?
An overloaded team is a sign of high demand or of low efficiency, and the two look the same from the inside. Hiring solves the first and worsens the second, because added cost is spread over the same inefficient process.
A few comparisons separate the two cases and point to the cheaper fix first.
2. What the evidence can reveal
The comparison looks at output per person and the sources of lost time:
- Calculated Utilization and revenue per professional hour.
- Calculated Cost per billable hour and its trend.
- Calculated Non-billable time: administration, rework, internal meetings and searching for information.
- Information gap Process maps, recurring tasks and tools used, which show what could be streamlined.
If utilization is already high, the case for hiring is stronger. If it is low or realization is poor, the case for process improvement is stronger.
3. Investigate the problem
In the synthetic firm, Calculated utilization is high at 81.6%, so capacity is not obviously idle. But cost per billable hour rose 6.2%, from $186 to $198, and realization fell to 81.7%. Costs per hour are growing and more of the hours worked are not being fully paid.
Calculated Professional salaries grew 13.0% against hours growth of 5.1%. Illustrative A simple hiring illustration: at the firm’s cost of about $198 an hour, adding a professional who works 1,500 billable hours costs about $297,000 at the firm’s average cost per hour, and the added revenue at an average realized rate of about $213 is about $320,000. That leaves a margin of about $22,500, thin enough that a modest drop in utilization or realization would make the hire unprofitable.
Hypothesis With high utilization and falling realization, the firm may need both capacity and process improvement, but fixing realization first is cheaper. Information gap Non-billable time and process data are not in the demo, so the split cannot be confirmed.
4. Explore the interactive experience
Investigate it yourself.
Firm Economics Dashboard: a service-line dashboard with utilization and realization, a scenario simulator for hours, rate and cost, evidence-linked answers from APIS, and a sample brief, all on synthetic data.
The experience below is built on a synthetic firm, “Demo Advisory Partners,” analyzed by service line. It has no client-level or engagement-level records, so service lines are used to show the method. Nothing in it is real.
- Click the Cost per billable hour card. What has happened to it over the year?
- In the Scenario tab, raise realized rate by 2% and then raise hours by 2%. Which adds more profit?
- Ask APIS why a busy firm may have weak margins.
5. Evaluate possible solutions
Try the cheaper fix first, then hire if the evidence supports it.
6. What leadership should do next
Questions to answer
- Is utilization at the limit?
- How much time is non-billable?
- Is realization improving or falling?
- What would a hire earn?
Data to gather
- Time by activity
- Realization by service
- Hiring costs
- Demand pipeline
Steps to take
- Measure non-billable time.
- Fix the biggest source.
- Model any hire.
- Review quarterly.
7. Engage Two Pillars
Understand Your Firm’s Economics and Growth Opportunities
Two Pillars can help professional services firms investigate client profitability, engagement operations, capacity and strategic growth using your own data. A good first step is a capacity-versus-process review that tests the case for hiring.
Sources and data notes
- The organization, its figures, and every number in this article and its interactive experience are synthetic and illustrative. They are not real data, a benchmark, or a forecast.
- Reviewed October 2026. This article describes an approach to investigation. It does not replace review by qualified professionals.