£100,000 self-employed profit: estimated take-home £69,311
Estimate for a sole trader resident in England, Wales or Northern Ireland whose only income is £100,000 of self-employed profit: £27,432.00 Income Tax and £3,256.60 Class 4 National Insurance, leaving approximately £5,775.95 a month.
The breakdown
| Profit | £100,000.00 |
|---|---|
| Personal Allowance (tax-free) | £12,570.00 |
| Basic rate (20%) on £37,700.00 | - £7,540.00 |
| Higher rate (40%) on £49,730.00 | - £19,892.00 |
| Class 4 National Insurance | - £3,256.60 |
| Take-home for the year | £69,311.40 |
| Per month | £5,775.95 |
| Per week | £1,332.91 |
What it means
Part of this profit is in the higher-rate band (40% Income Tax on profit above £50,270, with National Insurance dropping to 2%). Each extra £100 earned costs about £62. Pension contributions and allowable expenses reduce the bill at the higher rate.
Set aside about 31% of every payment (£30,689 over the year). Because the bill is over £1,000, HMRC will usually also ask for payments on account: roughly £15,344 on 31 January and again on 31 July towards next year.
In Scotland the same profit leaves £66,011.35 (£3,300.05 less), because Scottish Income Tax has its own bands. National Insurance is the same everywhere.
Try your own numbers
2026/27 tax year. Income from self-employment only: no salary, savings, dividends, student loan or pension contributions. An estimate for general information only.
£69,311.40
about £5,775.95 a month
How much tax is due on £100,000 of self-employed profit?
An estimated £27,432.00 Income Tax and £3,256.60 Class 4 National Insurance in 2026/27, £30,688.60 in total, if this is your only income and you live outside Scotland.
Is this profit or turnover?
Profit: what you invoiced minus allowable business expenses. If you invoiced more but had costs, enter both in the calculator above.
What if I also have a job?
Your salary uses up the Personal Allowance and basic-rate band first, so more of your self-employed profit is taxed at higher rates. This page assumes self-employment is your only income.
Watch your tax bill grow as you're paid.
Fenquist keeps a running estimate all year, so January is never a surprise. Free to start.