HMRC Self Assessment tax estimator. Calculate your approximate Income Tax, Class 4 National Insurance, and find out your estimated take-home pay in seconds.Note: This calculator uses the standard tax bands for England, Wales, and Northern Ireland. Scottish tax rates differ slightly.
Sole Trader Tax Calculator
Office, travel, equipment, etc.
Net Take Home Pay
After Tax & NI
How to use this Self Assessment Tax Calculator
If you are self-employed in the UK, you don’t receive a payslip with taxes deducted automatically (PAYE). Instead, you must file a Self Assessment tax return annually. This tool works as a self employed tax return calculator and self assessment tax calculator, helping you budget for your bill before the January deadline.
- Turnover (Revenue): Enter your total invoices or sales before any deductions.
- Allowable Expenses: Enter business costs — software, travel, equipment, home office, and similar. HMRC taxes your profit, not your total income, so getting this right matters. The tool doubles as a self-employed expenses calculator so you can see the direct impact of each cost on your final bill.
- Result: We calculate your Income Tax and Class 4 National Insurance to show your net profit — the actual money in your pocket — answering “how much tax will I pay self employed?” without the manual maths.
Note: This tax calculator for self employed assumes a standard 2026/27 scenario. It does not account for student loan repayments, marriage allowance, or specific reliefs.
Freelance & Contractor Tax Explained
Whether you are looking for a freelance tax calculator UK, a sole trader tax calculator UK, or a general self-employed tax calculator, the core rules are the same. Sole Traders pay tax on business profits through the personal tax system — not via Corporation Tax.
Unlike limited companies, where income is split between salary, dividends and Corporation Tax, a sole trader gets a Personal Allowance and pays Income Tax on everything above it. This is what makes the sole trader income tax calculator relatively simple to use: there is no separate business tax to worry about.
Worth knowing: If your expenses are low — under £1,000 per year — you may be better off claiming the flat £1,000 Trading Allowance instead of itemising actual costs. Use the self employed expenses calculator above to compare both options and see which one reduces your bill more.
How is tax calculated for self‑employed? (2026/27 Rates)
To work out self employed tax manually, apply the following HMRC bands to your Net Profit (Turnover minus Expenses). The income tax bands for England, Wales and Northern Ireland are unchanged from last year — the threshold freeze continues through at least April 2028.
1. Income Tax Bands (England, Wales & Northern Ireland)
Most sole traders pay the Basic Rate, but once profits grow, higher rates kick in. Scotland has its own bands — if you are based there, a self employed tax calculator Scotland will give you more accurate figures.
| Band | Taxable Income | Tax Rate |
|---|---|---|
| Personal Allowance | Up to £12,570 | 0% |
| Basic Rate | £12,571 to £50,270 | 20% |
| Higher Rate | £50,271 to £125,140 | 40% |
| Additional Rate | Over £125,140 | 45% |
2. National Insurance (Class 4)
A lot of people forget about Class 4 when they first go self-employed, but it adds up. For 2026/27, the rates are unchanged:
- Main Rate (6%): On profits between £12,570 and £50,270.
- Higher Rate (2%): On profits above £50,270.
This sole trader national insurance calculator logic is built into the tool above, giving you a combined self employed tax and NI calculator in one view.
Self Employed Take Home Pay Calculator
“Take home pay” is a term most people associate with employment, but as a sole trader your equivalent is net profit after tax and NI. Knowing this figure in advance is what separates those who sail through January’s payment deadline from those who scramble for funds.
A good habit: once you know your monthly net profit from this self employed take home calculator, set aside that tax percentage into a separate account each time a payment lands. Treat it as money that was never yours to spend. It makes the twice-yearly Payments on Account far less painful.
Frequently Asked Questions
How much is self-employment tax?
It depends on your profits. You pay Income Tax at 20%, 40%, or 45% plus Class 4 National Insurance at 6% or 2%, depending on where your profits sit relative to the thresholds. Use the self employment tax calculator above for a fast estimate based on current bands. For a deeper dive, a self assessment calculator lets you model different income levels before you commit to any financial decisions.
Do I need to pay Class 2 National Insurance?
The rules changed in April 2024 and are carried forward into 2026/27:
- Profits above the Small Profits Threshold (£7,105): You do not pay Class 2 NI, but you are treated as having paid it. Your National Insurance record — including State Pension entitlement — is protected automatically.
- Profits below £7,105: You can pay Class 2 NI voluntarily to keep your NI record intact and protect your access to the State Pension and contributory benefits.
This tool focuses on Class 4 contributions, which is what most self-employed people are looking for when they search for a self employed tax and national insurance calculator.
What are Payments on Account?
If your Self Assessment bill exceeds £1,000, HMRC will ask you to make Payments on Account for the following year — 50% due in January and 50% in July. This sole trader calculator shows your liability for the current year only, so keep in mind that your actual cash payment to HMRC in January could be up to 150% of this year’s bill if it is your first time filing.
Sole Trader vs Limited Company
If your profits are growing, it is worth comparing structures. A sole trader vs limited company calculator — sometimes called a limited company vs sole trader tax calculator or a ltd company vs sole trader calculator — lets you model the difference between paying Income Tax as a sole trader and splitting profits between salary and dividends as a director. The crossover point varies depending on your circumstances, but many accountants suggest the comparison becomes relevant around £30,000–£35,000 net profit.
If you have both a job and a side business, an employed and self employed tax calculator lets you combine PAYE income with self-employed profits in a single calculation — useful for avoiding surprises if your combined income pushes you into the Higher Rate band.
Quick Reference: Common Salary Searches
People often search for specific figures: 28k after tax UK, 25760 after tax, 41000 after tax, or how much tax will I pay on 60000 self-employed. Drop any of those figures into the self employed income tax calculator above and you will get an instant breakdown. Just remember that if you have allowable expenses to deduct, your actual bill will be lower than a gross figure suggests — which is why using a proper self assessment tax calculator UK matters more than relying on rough percentages.
For scenarios involving multiple income streams, previous tax years such as 2022/23, or working outside England and Wales — including sole trader tax calculator Ireland or cross-border situations — the figures will differ, and a qualified accountant is worth the fee.
This sole trader tax calculator is updated for the 2026/27 tax year. Results are estimates only and do not constitute financial or tax advice. For complex affairs, please consult a qualified adviser or refer to HMRC’s own Self Assessment guidance at gov.uk.
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