How many clients can you actually serve well?
Not how many you can sign. How many you can carry at the standard you sell. Enter your real week, the hours a client genuinely takes, and what you charge. The number that comes back is usually smaller than the one in your head.
The arithmetic gives 5.27, which rounds down. You have room for 1 more.
- Delivery
- Buffer
- Sales & marketing
- Admin & internal
Your 45-hour week: 26.3 hours usable delivery, 4.6 hours buffer, 6 hours sales and marketing, 8 hours admin and internal.
The load test: what one more client does
Take client number 6 and delivery needs 30.0 hours a week against the 31.0 you have before any buffer.
1.0 hours of slack left
Your buffer was 4.6 hours. One more client eats most of it, so the next thing that goes wrong comes out of your evening.
How the numbers work
| Figure | How it’s calculated |
|---|---|
| Delivery hours | week − sales − admin |
| Usable delivery hours | delivery hours × (1 − buffer) |
| Client capacity | usable hours ÷ hours per client, rounded down |
| Revenue ceiling | capacity × monthly value per client |
| Effective rate | ceiling ÷ (capacity × hours per client × 4.33) |
Two things make the real number smaller than the imagined one. The first is that non-delivery work is not optional, and a founder who stops selling to deliver builds the feast-and-famine cycle by hand. The second is the buffer. Capacity planned at 100% is capacity that fails the first week a client escalates, and every week is the first week for someone.
Reference: capacity by hours per client
Against a 45-hour week with 14 hours on sales and admin, and a 15% buffer.
| Hours per client / week | Clients you can carry | At $2,500/mo each | Effective rate |
|---|---|---|---|
| 2 | 13 | $32,500 | $288 |
| 3 | 8 | $20,000 | $192 |
| 4 | 6 | $15,000 | $144 |
| 5 | 5 | $12,500 | $115 |
| 6 | 4 | $10,000 | $96 |
| 8 | 3 | $7,500 | $72 |
| 10 | 2 | $5,000 | $58 |
The number is downstream of price
Capacity and price are one system, not two. Ten clients at $1,000 and four at $2,500 produce the same revenue, and the second business is better in every way that matters: fewer relationships to hold, more attention on each, more slack when one needs it, and a smaller failure if one leaves. Owners who feel trapped by capacity are usually priced into needing the count.
So the useful question is rarely how to fit more clients into the week. It is what would have to be true to serve fewer of them for more.
See how capacity and pricing connect in the Four Frameworks →
Founder-hours model. This measures one person’s delivery capacity and assumes no delegation; a team changes the arithmetic entirely. Monthly hours use 4.33 weeks. Hours per client should include the invisible time: their email, the call that runs long, the context switch back. Last updated 13 August 2026.