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Sole Trader Tax Calculator 2026/27

Enter your income and business costs below to see your net earnings, taxes, and effective rate.

2026/27 HMRC rates No signup No data stored Browser-only calculation

Your details

£30,000
£
£0 £50k £100k £150k £200k

Your total earnings before any expenses.

£

Allowable costs like equipment, travel, and office supplies.

£

Reduces your taxable income for Income Tax.

Estimated annual take-home

£21,768

£1,814

/ month

£419

/ week

Breakdown

Taxable profit £25,000
Personal allowance £12,570
Income Tax £2,486
National Insurance (Class 4) £746
Total deductions £3,232
Effective tax rate 12.93%

How your income is split

Take-home Income Tax NI

Payments on Account

1st PoA (31 Jan 2028) —
2nd PoA (31 Jul 2028) —

Each PoA = 50% of your current tax bill. Only applies if your bill exceeds £1,000.

Take-home

£21,768

£1,814 / mo

Eff. rate: 12.93%

How is Sole Trader Tax Calculated?

As a sole trader in the UK, you pay tax on your business profits rather than your total turnover. Profit is calculated by subtracting your allowable business expenses from your total gross income.

Once your taxable profit is determined, HMRC calculates your tax liability based on two key components: Income Tax and Class 4 National Insurance. If you make private pension contributions, these can offset your income tax subject to specific limits, and any outstanding student loan balances are repaid based on profits exceeding standard UK repayment thresholds.

Income Tax Bands for 2026/27 (Rest of UK)

Income Tax is calculated using bands after subtracting your £12,570 personal allowance. For England, Wales, and Northern Ireland, the bands are:

Taxable Band Income Range 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%

It is important to remember the personal allowance taper. If your taxable profit exceeds £100,000, your personal allowance is reduced by £1 for every £2 of income above that threshold, meaning you lose the allowance entirely once your income reaches £125,140.

▸ Scottish Income Tax Bands 2026/27

Scotland has its own Income Tax rates, set by the Scottish Parliament. Scottish residents pay these rates on non-savings income:

Band Taxable Income Rate
Starter Rate£12,571 - £16,53719%
Basic Rate£16,538 - £29,52620%
Intermediate Rate£29,527 - £43,66221%
Higher Rate£43,663 - £75,00042%
Advanced Rate£75,001 - £125,14045%
Top RateOver £125,14048%

Use the "Scotland" toggle in the calculator above to apply these rates automatically. See our dedicated Scotland Tax Calculator →

National Insurance for Sole Traders 2026/27

Unlike employees who pay Class 1 National Insurance, sole traders pay Class 4 National Insurance. The contributions are computed directly on profits as follows:

Class 4 NI Rates

  • 0% on profits up to £12,570 (Lower Profits Limit)
  • 6% on profits between £12,571 and £50,270
  • 2% on profits exceeding £50,270

What Happened to Class 2 NI?

HMRC abolished mandatory Class 2 National Insurance contributions starting from April 2024 to simplify self-employed taxes. However, sole traders earning above the Small Profits Threshold (£7,105 in 2026/27) continue to receive national insurance credits to build up their State Pension history automatically.

What Business Expenses Can I Deduct?

Allowable business expenses are running costs you incur to keep your business operating. These costs must be "wholly and exclusively" for business. Claiming all allowable expenses ensures you do not overpay tax:

  • Office costs: broadband, phone bills, computing software, printing, stationary, and utility proportions.
  • Travel and transport: public transport fares, vehicle repairs, business insurance, and business mileage.
  • Inventory & materials: raw stock, raw material costs, or equipment repairs.
  • Marketing & advertising: advertising campaigns, professional accountant fees, and website design costs.

Sole Trader vs Self-Employed: Is There a Difference?

The terms "sole trader" and "self-employed" are often used interchangeably, but they have a subtle distinction. Self-employed is your employment status — it means you work for yourself rather than under an employment contract. Sole trader is the specific legal business structure you operate under.

You can be self-employed and trade as a limited company or in a partnership. But if you work for yourself under your own name without incorporating, you are a sole trader by default. Both terms apply to the Self Assessment tax system, and this calculator covers both scenarios.

When Do I Pay My Self Assessment Tax Bill?

HMRC runs the Self Assessment system on a strict timeline. The key deadlines for the 2026/27 tax year are:

  • 5th October 2027: Deadline to register for Self Assessment if you are newly self-employed.
  • 31st October 2027: Paper return filing deadline.
  • 31st January 2028: Online return filing deadline and payment of your final balancing payment, plus the first payment on account for 2027/28.
  • 31st July 2028: Second payment on account deadline.

How Does This Compare to a Limited Company?

Whether to operate as a sole trader or a limited company is one of the most important decisions for UK freelancers and contractors. As a sole trader, you benefit from simpler administration and lower compliance costs, but you pay Income Tax and Class 4 NI on all profits directly.

A limited company pays Corporation Tax (currently 25% on profits above £250,000, or 19% on small profits), and directors typically extract income as a combination of a low salary and dividends — a strategy that can result in a significantly lower overall tax bill at higher income levels.

Use our Limited Company vs Sole Trader Calculator to compare your take-home pay under both structures side by side.

Making Tax Digital (MTD) — Does it Affect Me?

Making Tax Digital for Income Tax is now live. If you are a sole trader or landlord with a combined qualifying gross income above £50,000, you must keep digital records and submit quarterly summaries to HMRC. Use our MTD Readiness Checker to determine when your business must comply.

Frequently Asked Questions

How is sole trader tax calculated in the UK?
Sole trader tax is calculated on your net taxable profit (gross income minus allowable business expenses). Taxable profits above £12,570 are subject to Income Tax at 20%, 40%, or 45% (and Scottish Starter/Intermediate bands if you live in Scotland). You also pay Class 4 National Insurance at 6% on profits between £12,570 and £50,270, and 2% on profits above £50,270.
What is the personal allowance for 2026/27?
The personal allowance is £12,570. You do not pay Income Tax on profits below this threshold. However, if your net profits exceed £100,000, your personal allowance tapers down by £1 for every £2 of excess income, reaching £0 at £125,140.
Can I deduct business expenses to reduce my tax bill?
Yes, any expenses that are "wholly and exclusively" incurred for business purposes can be deducted from your turnover before tax is calculated. Examples include office rent, marketing, business insurance, travel expenses, and software subscriptions.
Is Class 2 National Insurance still payable by sole traders?
No, Class 2 National Insurance has been abolished as a mandatory payment starting April 2024. If your profits exceed £7,105, your National Insurance record is credited automatically. Below this, voluntary payments can be made to protect pension rights.
When is the tax payment deadline for sole traders?
Tax for the 2026/27 tax year must be submitted and paid online by 31st January 2028. This includes the balancing payment and your first Payment on Account for the following tax year.
What are Payments on Account?
Payments on Account are advance payments towards your next tax bill, required if your tax bill is over £1,000 (unless you have already paid 80% or more of your tax through PAYE). Each payment is equal to half of your previous year's tax bill, due on 31st January and 31st July.
Does Making Tax Digital affect sole traders in 2026?
Yes, if your combined self-employed and rental income exceeds £50,000, you are legally required to keep digital records and submit quarterly updates to HMRC under MTD starting April 2026.
How do pension contributions affect my sole trader tax?
Private pension contributions reduce your net taxable income for Income Tax calculations, effectively extending your basic rate band. However, pension contributions do not reduce your profits for National Insurance Class 4 calculations.
How do student loan repayments work for the self-employed?
If you have a student loan, repayments are calculated through Self Assessment. For Plan 1, you pay 9% of your profits above £26,900. For Plan 2, you pay 9% of profits above £29,385.
What is the threshold for registering for VAT?
For the 2026/27 tax year, the VAT registration threshold is £90,000. If your taxable turnover exceeds this amount over a rolling 12-month period, you must register.
Do I need an accountant as a sole trader?
You are not legally required to use an accountant, but many sole traders find professional help invaluable — especially for first-time Self Assessment filers. An accountant can identify overlooked expense claims, ensure HMRC deadlines are met, and provide peace of mind. For straightforward self-employment, tools like FreeAgent can automate much of your bookkeeping and Self Assessment preparation at minimal cost.
Is being a sole trader the same as being self-employed?
These terms are often used interchangeably, but there is a subtle distinction. "Self-employed" describes your employment status — you work for yourself rather than an employer. "Sole trader" is the specific legal business structure you operate under. You can be self-employed and set up as a limited company, but if you trade under your own name without incorporating, you are a sole trader.