Fully Booked and Still Not Profitable? More Clients Won't Fix It

When you're full, profit can come from price, mix, cost to serve and your own time, not from more clients

Run the five steps below in order. The first tells you whether you are full at all. The next two show what each kind of work earns once your own time is counted. The last two change your price and your client list.

1. Your calendar can look full while your people still have hours to sell

Do this. For each person who delivers paid work, including you, count the hours they spent on paid client work last week and compare that with 80 to 85 percent of the hours they were available.

It worked when you have one number per person, paid hours against practical hours, and you know whether anyone has room left.

Why. Robert Kaplan and Steven Anderson suggest, as a rule of thumb, assuming that practical full capacity is 80 to 85 percent of theoretical full capacity ¹. By that rule, a person or machine available to work 40 hours a week has a practical capacity of 32 to 35 hours ¹. For people, they suggest allowing about 20 percent of the time for breaks, arrival and departure, communication and training ¹. In our view, someone booked for all 40 of their available hours is already past practical capacity, so the fix for them is price or mix rather than more bookings.

Example. At Lewis-Goetz, a hose and belt fabricator based in Pittsburgh, the vice president of operations saw from a time-driven cost model that one of his plants was operating at only 27 percent of capacity ¹. We read that as a reason to measure capacity rather than assume it.

2. Your biggest clients can be the ones that earn you little

Do this. List your clients or kinds of job, and for each one write down the price, the materials and the hours your people spend on it, counting travel, callbacks, admin and selling time, then work out what is left per hour.

It worked when every client or kind of job has a profit-per-hour figure, and you can name the three at the bottom of the list.

Why. Kaplan and Anderson's time-driven costing needs only two estimates for each group of resources: the cost per unit of time of supplying capacity, and how much of that time each product, service and customer uses ¹. One person who runs a business with employees noticed this about their three biggest clients: "And despite the fact that they are my biggest clients, I actually don't make that much money from them. I did. But they have so much discount it's not worth using my employees to do work for them." If you can't produce this list quickly, make that the first thing you fix, before price or marketing.

Example. Robert Kaplan wrote that in virtually every customer profitability study, 15 to 20 percent of the customers generate 100 percent or more of the profits ².

3. Your own hours belong in the price

Do this. Put a wage for every hour you work in the business into the cost of each job, at the rate you would pay someone else to do that work, and redo the profit-per-hour list.

It worked when the list includes your hours at that wage, and you can see which work still leaves a profit after you are paid.

Why. One person described a trap they see: "I would call it a huge trap a lot of small business owners get into - they set margins on what it costs for them to get the work done, not the margins they need to pay someone to get the work done, all the equipment or training they'll need plus the profit margin they expect from setting up the work." In our view, if your own time is free in the price, the profit you see is really your wage, and it disappears the day you hire someone to do that work.

Example. One owner of a beauty business, almost five years in, put it this way: "I am able to pay myself (~$33k/year) but my business profits a big fat zero." We read that as a business whose price covers the owner's wage and nothing more.

4. In one study, new deals were judged against the market, repeat ones against the last price

Do this. Quote every new client a higher price than you charge today, and leave existing clients' prices where they are until you have seen how new clients answer.

It worked when new quotes go out at the new price, and you log each answer as yes or no.

Why. In telephone surveys of randomly selected residents of Toronto and Vancouver in 1984–85, reported in 1986, Daniel Kahneman, Jack Knetsch and Richard Thaler found that 82 percent of respondents judged it unfair for a hardware store to raise the price of snow shovels from $15 to $20 the morning after a large snowstorm ³. The authors summed up the public's view: it is acceptable for a firm to raise prices when profits are threatened, and unfair to exploit shifts in demand by raising prices ³. The authors found that the most recent price in an ongoing relationship serves as the reference, while for new transactions the prevailing competitive price does ³. In our view, a calendar booked weeks ahead can be a sign that your price is too low, and we read these findings as pointing the rise first at new quotes, which are judged against the market, rather than at a sitting client's last price. We'd also sell the result the client came for as a package rather than by the hour or the session; in our view, an hour is easy to compare on price and a result is not.

Example. In the same surveys, 79 percent judged it acceptable for a grocer to raise the price of lettuce by 30 cents a head after the wholesale price had risen by 30 cents ³. They report that a rent increase judged fair for a new lease may be judged unfair for a renewal ³. For existing clients, we'd tie any rise to costs that have gone up, and say so when you raise it.

5. Try to fix clients who cost more than they pay before you drop them

Do this. For each client at the bottom of your list, try three things in order: lower what it costs you to serve them, charge for the extras they use, and offer them work that earns more; end the work only if none of that makes them profitable.

It worked when every client at the bottom of the list has one written decision, fix, reprice or let go, with a date to check it.

Why. Kaplan described pricing as a menu: a base price for a standard product or service, and a price for each variation, such as a customized service, special packaging, expedited delivery or extended credit terms, that at least covers its cost ². He also wrote that a customer may be unprofitable because it buys only a single service, and that selling it a wider range of services is an alternative to raising the price of that one service ². In our view, those are the moves to try before you let a client go.

Example. In 2007 Sprint Nextel canceled the accounts of 1,000 customers it deemed habitual complainers, ABC News reported ⁴. A Sprint spokeswoman said a small number of those customers had been calling over a period of six to 12 months, sometimes 300 times a month ⁴. Sprint waived the early termination fee for those customers, and ABC News ran the story under the headline "Disconnected: Sprint Boots Customers for Complaining" ⁴. In our view, that headline shows the public cost that letting customers go can carry, which is why ending the work comes last in this step.

A full calendar can turn the profit question into a price question

In The Price Advantage, Michael Marn, Eric Roegner and Craig Zawada worked from the 2002 average income statement of the Global 1200, an aggregation of 1,200 large, publicly held companies from around the world ⁵. On that Global 1200 average, with volume unchanged, a 1 percent price rise lifts operating profit from 9.1 to 10.1 percent of price, a relative increase of 11 percent ⁵. On the same Global 1200 average economics, a 1 percent cut in variable costs raises operating profit by 7.3 percent, a 1 percent rise in volume by 3.7 percent, and a 1 percent cut in fixed costs by 2.7 percent ⁵. They also write that the volume lever gets most of the attention and energy of marketing and sales people, although its profit impact is much lower than that of price ⁵. On the same average economics, a 5 percent price cut needs a 17.5 percent rise in volume just to break even on operating profit ⁵. In our view, a full calendar takes the volume lever off the table, because you can't sell hours you no longer have, which leaves price, mix and cost to serve.

Kaplan wrote that many companies have experienced profitless revenue growth ². We read that as a warning that growing on a margin that doesn't work can speed up the problem instead of fixing it.

In the Federal Reserve Banks' 2025 Small Business Credit Survey, 47 percent of employer firms said they were operating at a profit at the end of 2024, 19 percent at break-even and 34 percent at a loss ⁶. The 2025 survey was fielded from September 3 to November 14, 2025, and yielded 6,525 responses from small employer firms with 1 to 499 employees ⁶. In the same survey, increased costs of goods, services or wages was the most common financial challenge in the prior 12 months, reported by 73 percent of employer firms ⁶. In the same survey, among employer firms with financial challenges, 54 percent used personal funds, 48 percent raised the prices they charge and 47 percent reduced costs ⁶. One person put it simply: "I think it’s as 'simple' as, like many businesses, your costs have significantly increased in the past several years but your prices have not." We read those numbers as a reason to check whether your prices kept up with your costs before you blame the calendar.

In a sample of 597,000 small businesses with Chase business deposit accounts, using 2015 data, the JPMorgan Chase Institute found that the median small business held 27 cash buffer days in reserve ⁷. The Institute found that small businesses in labor-intensive or low-wage industries hold fewer cash buffer days than those in capital-intensive or high-wage industries ⁷. In our view, that is one more reason the margin on each booked hour matters for any business that sells people's time.

One insurer's numbers show how some customers can carry all the profit while a small group erases part of it

In one insurance company Kaplan described, the most profitable 40 percent of customers generated 130 percent of annual profits, the middle 55 percent broke even, and the least profitable 5 percent caused losses equal to 30 percent of annual profits ². For the break-even middle group, the insurer set out to improve its processes to lower the cost of serving them, and it focused most of its attention on the loss-making 5 percent, repricing services and asking them for more business in higher-margin product lines ². If it could not turn those customers into profitable ones, the insurer was prepared to drop the accounts ².

Kaplan and Anderson write that activity-based costing has helped many companies find cost and profit opportunities, among them the repricing of unprofitable customer relationships ¹. Kaplan said in 2007 that measuring profit customer by customer lets a business track new numbers such as the percentage of unprofitable customers and the dollars lost in unprofitable customer relationships ⁸. Our rule of thumb is to rerun your profit-per-hour list each quarter, so a client sliding toward the bottom shows up before it costs you a year.

More clients can still help when you have open hours, and a price rise can still meet pushback

In our view, if step 1 showed open hours, filling them is worth doing, because the volume lever in the chart above still adds profit when there are hours to sell. The steps in this article are for the hours you no longer have.

Our answer to that question is to test before deciding: put the higher price on new quotes, and change what sits around the price, such as a guarantee, clear terms or a defined result, before you cut it. In our view, lower risk for the buyer can raise what they are willing to pay. Try the change on one part of the business first, such as one service or one kind of client, and grow the part that works.

One person pushed back on high margin targets: "In my business just our equipment costs are 25% of revenue and payroll of the front line workers is 40% of revenue." In our view, the target that matters is your own profit per hour from step 2, after your own wage, not a margin borrowed from another business.

Your next new quotes can test a higher price without touching existing clients

Our rule of thumb for the test: if your next open slot is more than two weeks away, quote your next ten new clients 5 percent above your current price and leave existing clients where they are. Write down each answer, yes or no. Our rule of thumb for the decision: if seven or more of the ten say yes, the new price is your price; if fewer than five say yes, go back to step 2 and look at what you sell, not what you charge; in between, run ten more quotes. Send the first new quote at the higher price within seven days.

A full calendar can pay once your price, your mix and your own hours are in the numbers

We started with a full calendar and nothing left after you pay yourself. You now have a five-step check on where the money goes, from real capacity to the clients at the bottom of the list. You know why a 1 percent price rise can beat 1 percent more sales on the Global 1200 numbers, and why a full calendar leaves price, mix and cost to serve as the levers. You also have a new-quote price test you can start within seven days, with a rule for deciding after the last quote.

Read before: the few numbers that tell you how your week went. Read next: how to raise prices on existing customers without losing your best ones, and How to Scale Your Business With AI (Without Adding Headcount) once your hours pay what they should.

See where your business stands on the Scorecard.

Sources

1. Rethinking Activity-Based Costing · HBS Working Knowledge (Robert S. Kaplan and Steven R. Anderson, Harvard Business Review excerpt), 2005-01-24
2. A Balanced Scorecard Approach To Measure Customer Profitability · HBS Working Knowledge (Robert S. Kaplan), 2005-08-08
3. Fairness as a Constraint on Profit Seeking: Entitlements in the Market · American Economic Review 76(4) (Daniel Kahneman, Jack L. Knetsch, Richard Thaler), 1986
4. Disconnected: Sprint Boots Customers for Complaining · ABC News (Lee Ferran), 2007-07-10
5. The Price Advantage, chapter 1 (publisher reading sample) · John Wiley & Sons (Michael V. Marn, Eric V. Roegner, Craig C. Zawada), 2004
6. Small Business Credit Survey: 2026 Report on Employer Firms · Federal Reserve Banks, 2026
7. Cash is King: Flows, Balances, and Buffer Days · JPMorgan Chase Institute, 2016-09-01
8. Adding Time to Activity-Based Costing · HBS Working Knowledge (Susan Gilbert), 2007-04-11