Reprice at renewal
When it may fit: The client is valuable but under-priced.
Evidence needed: Cost to serve and market rates.
Trade-off: May lose the client.
Professional Services Intelligence Brief
How to Investigate Unprofitable Client Relationships
Some clients cost more to serve than they pay. Finding them means looking past billings to hours, write-downs, rework and the senior time they absorb.
1. The business problem
Which of our clients are really profitable, and which only look it?
Billings by client are easy to see. Profit by client is harder, because it needs cost of time, write-offs and unbilled effort. A large client can be the least profitable if it demands discounts, changes scope often or consumes partner time.
Knowing the real profitability of each relationship lets a firm reprice, restructure or part ways deliberately.
2. What the evidence can reveal
Client profitability needs a few inputs:
- Calculated Hours worked, by person and level, and their cost.
- Calculated Revenue collected after discounts and write-downs.
- Calculated Contribution: collected revenue less the cost of the time.
- Information gap Unbilled time, partner involvement, payment delays and the strategic value of the client.
A client with low realization and heavy senior involvement is the most likely to be unprofitable.
3. Investigate the problem
The synthetic firm is analyzed by service line, and technology consulting looks like a problem client in miniature. Calculated Hours grew 25.0% and revenue 13.2%, but the realized rate fell from $190 to $172 an hour, direct costs grew 52.6% and contribution margin dropped from 50.0% to 32.6%.
Illustrative An invented client shows how the arithmetic works. Suppose the standard rate is $250 an hour and the client is given a 15% discount, so the rate is $212.50. The team works 100 hours but 10 are written off, so 90 hours are billed, producing $19,125 against a standard value of $25,000, a realization of about 76%. At the firm’s cost of about $198 an hour, the 100 hours cost $19,800, so the client loses about $675.
Hypothesis The same pattern at the client level, discounts plus write-downs on work that takes more time than planned, would turn a nominally good client into a loss. Information gap Client-level data are not in the demo. Ranking clients by contribution and by realization, and looking at the bottom tenth, is the usual first step.
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.
- In the service-line table, sort by Contribution margin. Which line has fallen the most?
- Select Technology Consulting and compare its growth in hours with its change in realized rate.
- Ask APIS which service lines warrant a closer review.
5. Evaluate possible solutions
What to do with an unprofitable client depends on why it is unprofitable.
6. What leadership should do next
Questions to answer
- Which clients earn the least after full cost?
- Is realization low on specific clients?
- How much senior time do they take?
- What is their strategic value?
Data to gather
- Time records by client and person
- Billings and write-downs
- Payment history
- Scope documents
Steps to take
- Rank clients on contribution.
- Investigate the bottom tenth.
- Reprice, restructure or exit.
- Review annually.
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 client profitability review that counts every hour and every write-down.
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.