Sole trader? Enter your figures and your tax updates instantly.
Gross personal contributions reduce the profit your Income Tax is charged on.
If your profit is below the small-profits threshold () Class 2 NI isn't due, but paying it voluntarily protects your State Pension and benefits.
For sole traders: Income Tax on profits + Class 4 NI (+ optional Class 2). Tax year 2026/27.
Total tax & NI
2026/27 · you keep of your profit
per month
per week
per day
effective tax rate
marginal rate
Estimate only - not tax advice. Excludes payments on account, student loans & trading allowance.
Personal allowance: · reduced by
| Band | Rate | Profit taxed | Tax |
|---|---|---|---|
The Self-Employed Tax Calculator does more than show a number. Below your result it explains what your figures mean in practice - your effective and marginal rates, any allowances or thresholds you are close to, and the specific steps to take next. Enter your details above and the guidance updates to match your situation.
Do this next, in order
Estimates only - not financial or tax advice. Confirm figures on GOV.UK or with an adviser.
Your current profit () sits inside this range.
| Scenario | Tax & NI | Take-home | Keep | |
|---|---|---|---|---|
Next steps
Income Tax calculator
Tax on any income
Salary calculator
Compare to employed take-home
VAT calculator
If you're VAT-registered
Browse all tax calculators or read our tax guides.
Self-Employed Tax Calculator by TaxFly — free UK tax calculators