Professional Services Intelligence Brief
How to Determine Which Services Are Worth Scaling
Scaling the wrong service multiplies its problems. Check that a service earns a good margin, can be delivered repeatedly and has demand before you put growth money behind it.
Short answer
A service is worth scaling when it earns a healthy margin, can be delivered repeatedly by people other than its creator, has growing demand and fits your capacity. Compare each service with benchmarks and with the firm’s own average: SPI’s data, summarized by Deltek, show average project margin of 37.7 percent in 2025 and 50 percent or more at the most mature firms,[1] and revenue per billable consultant averaging $210,000 with a rule of thumb of at least twice fully loaded cost.[1] Test repeatability, pricing power and the capacity constraint first.
What does it mean to scale a service?
Scaling a service means growing its revenue faster than its cost: serving more clients without hiring in proportion, by standardizing delivery, using lower-cost roles or technology, reusing assets such as templates and tools, and pricing on value. A service that depends on one expert, a custom approach for every client and unlimited scope cannot scale; it can only grow by adding more of the same people.
The aim of the analysis in this guide is to avoid two mistakes: scaling a service that does not earn enough, and failing to scale one that does. A good test applies four filters in order: margin, repeatability, demand and capacity.
Is the margin high enough?
Compute the margin for each service after direct labor and a fair share of overhead, using at least a year of data. Compare it with the firm’s average and with benchmarks. SPI’s 2026 benchmark, summarized by Deltek, found average project margin of 37.7 percent in 2025 and margins well above 50 percent at Level 5 organizations, which it attributes to mature pricing strategies, delivery governance and resource management.[1] These are reference points from benchmarked firms; your own thresholds should reflect your cost structure.
Also check revenue per billable person. Deltek’s summary reports an average of $210,000 per billable consultant in 2025 and a rule of thumb that revenue per consultant should be at least twice fully loaded cost.[1] A service that falls well below that is a candidate to fix before growing. Look too at realization: a service with a high stated margin can hide write-downs.
Can it be repeated without heroics?
Repeatability is the heart of scale. Ask whether the service has a defined scope, a standard process, documented methods and templates, and whether a trained person other than the lead can deliver it. Examine your last ten engagements: how much variation was there in hours, deliverables and outcomes? High variation means the offer is still custom. Scope discipline matters: Thomson Reuters notes that clear scope is essential whichever pricing structure is used.[4]
| Question | Yes means |
|---|---|
| Is the scope the same for most clients? | The offer is standardized |
| Is there a documented process and templates? | Others can follow it |
| Can a mid-level person deliver most of it? | Cost can fall as volume grows |
| Are outcomes consistent across clients? | The method works |
| Do clients refer others to it? | Demand can grow through reputation |
Is there demand, and can you serve it?
Look at the pipeline, win rate and enquiries for the service over the last year, and at outside evidence of demand such as market research. For capacity, apply the Theory of Constraints logic: identify what limits the service, such as senior review time, and see whether it can be relieved before you add people. The Theory of Constraints Institute advises exploiting and subordinating before elevating, because investing too soon raises risk unnecessarily.[3] Estimate how many additional engagements the existing team could deliver with better processes, and what additional investment would be needed beyond that.
Consider pricing power. Value pricing can raise margins because price is set on the client’s perceived value, not on hours or cost, but it requires understanding what clients value and a well-defined scope.[4] A service whose clients are insensitive to price and refer others has pricing power and is a better candidate for scale.
How do you decide and sequence investment?
Rank services on the four filters and rate them red, amber or green. Services that are green on all four deserve investment now: a dedicated lead, marketing, standard tools and training. Those amber on one filter need a fix first, for example repricing to lift margin or documenting the process to make it repeatable. Services that are red on margin and demand are candidates to reduce or stop. Invest in stages with clear milestones, and review the results quarterly.
SPI’s maturity data give a reason to focus on execution: in its 2025 report it noted that in 2024 firms at Level 5 saw on average a 739 percent increase in revenue growth, a 537 percent boost in profit margins and a 71 percent improvement in billable utilization over Level 1 organizations.[2] The differences reflect many factors, but they suggest that disciplined delivery and measurement, not only more sales, separate the best performers.
Frequently asked questions
What margin should a service have before I scale it?
There is no fixed rule. Benchmarked firms averaged a project margin of 37.7 percent in 2025, with leaders above 50 percent,[1] but compare against your own cost structure and firm average.
What makes a service repeatable?
A defined scope, a documented process and templates, consistent outcomes and the ability for people other than the originator to deliver it.
Should I hire before scaling a service?
Not first. The Theory of Constraints Institute advises exploiting and subordinating to the constraint before elevating capacity.[3]
How do I know if clients will pay more?
Look at win rates, discounting, referrals and how clients respond to value-based proposals; value pricing sets price on perceived value.[4]
Can scaling reduce quality?
Yes, if delivery is not standardized or if people are overloaded. Monitor satisfaction, overruns and rework as you grow.
What to do next
- Calculate margin and revenue per billable person for each service.
- Score each service on margin, repeatability, demand and capacity.
- Fix amber services before investing; stop red ones.
- Invest in stages for green services and review quarterly.
Optional · interactive example
See it in an interactive example.
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, pipeline or business development records, so service lines are used to show the method. Nothing in it is real.
- In the service-line table, select each line in turn and compare how its billable hours and revenue per hour changed. Which lines kept their rate as they grew?
- Select Technology Consulting. Would you scale it today?
- Ask APIS which service lines warrant a closer review.
Understand Your Firm’s Economics and Growth Opportunities
Two Pillars helps professional services firms investigate profitability, capacity, pricing and growth using the firm’s own data and a structured assessment process. A good first step is a client and growth review that shows how concentrated your revenue is, which clients and services earn the most, and where the next dollar of growth is most likely to come from.
Sources
- Deltek, 5 KPIs from the SPI Professional Services Maturity Benchmark Report Every PSO Must Track for Sustainable Growth (July 15, 2026). Accessed October 2026.
- SPI Research, The 18th Annual Professional Services Maturity Benchmark Report Is Out Now. Accessed October 2026.
- Theory of Constraints Institute, Five Focusing Steps, a Process of On-Going Improvement. Accessed October 2026.
- Thomson Reuters Tax & Accounting, Strategically pricing accounting services. Accessed October 2026.
Sources checked October 2026. This guide is general information for the leaders of professional services firms and is not legal, accounting, tax or financial advice. Figures and rules are cited to the sources below and may have changed since they were accessed, so confirm anything you rely on against the current source. Two Pillars & Co is independent of the organizations cited. See our editorial policy.