Gross fees are not income. Here is what different caseloads and fees actually leave a self-employed hypnotherapist once tax, National Insurance and practice costs come out.
The honest answer is that it depends on three things: what you charge, how many clients you see, and what your practice costs to run. Most pages answering this question stop at gross fees, which is the least useful number — it is not what reaches your bank account. Below is what different caseloads actually leave a self-employed hypnotherapist after income tax, National Insurance and running costs.
| Clients | Gross fees | Costs | Tax & NI | Take-home | Per month |
|---|---|---|---|---|---|
| 6 a week | £22,080 | £3,600 | £1,537 | £16,943 | £1,412 |
| 10 a week | £36,800 | £3,600 | £5,364 | £27,836 | £2,320 |
| 14 a week | £51,520 | £3,600 | £9,191 | £38,729 | £3,227 |
| 18 a week | £66,240 | £3,600 | £14,997 | £47,643 | £3,970 |
| 22 a week | £80,960 | £3,600 | £21,180 | £56,180 | £4,682 |
At £80 a session, seeing 14 clients a week grosses £51,520 a year and leaves £38,729 — about £3,227 a month. A full caseload of 22 grosses £80,960 and leaves £56,180. The gap between those two numbers is smaller than the gap in gross fees, because more income means a higher share goes in tax.
At a steady 14 clients a week:
| Fee | Gross fees | Tax & NI | Take-home | Per month |
|---|---|---|---|---|
| £60 a session | £38,640 | £5,842 | £29,198 | £2,433 |
| £80 a session | £51,520 | £9,191 | £38,729 | £3,227 |
| £115 a session | £74,060 | £18,282 | £52,178 | £4,348 |
| £150 a session | £96,600 | £27,749 | £65,251 | £5,438 |
Raising your fee is worth more than adding clients, because it costs you no extra hours and no extra room hire. Going from £60 to £150 a session at the same caseload changes take-home by £36,054 a year.
Change the fee, the caseload and the costs to match your own practice — three questions, about a minute, no sign-up.
Calculate my take-home →Running costs are the part most hypnotherapists underestimate when setting a fee. The worked example above uses £300 a month; yours may be higher or lower, and these are the usual lines:
As a sole trader you pay income tax and Class 4 National Insurance on your profit — fees after allowable costs — not on your turnover. At 14 clients a week in the example above that is £47,920 of profit, £7,070 of income tax and £2,121 of Class 4 NI. Setting aside about £14 per session covers it, which is the number worth knowing before January arrives.
One thing on the horizon: Making Tax Digital for Income Tax is phased in by gross income, not profit. A full caseload at this fee grosses £80,960, which would bring you into MTD from April 2026 — quarterly digital updates rather than one annual return.