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Are you thinking of becoming self employed or setting up a small business in the UK? Welcome to the Small Business Toolbox! There are over 5 million self employed folk in the UK. Small businesses are the backbone of the British economy and represent over 15% of workforce. Whether you’re a window cleaner, a plumber, a shop owner or operate an online business, this site is your one-stop resource to help you get your business up and running.
Important dates for 2026
CURRENT TAX YEAR: 2026/27
You are working in the tax year covering 6th April 2026 to 5th April 2027.
TAX RETURN YEAR: 2025/26
You should have already submitted your tax return for the tax year covering 6th April 2024 to 5th April 2025. You should now be preparing your tax return for the 2025/26 financial year (ending 5th April 2026).
TAX DEADLINE: 31 Jan 2027
The final deadline for your current tax return and any tax due is 31 Jan 2027 – this is for the 2025/26 tax year. It doesn’t cover deadlines for any payments on account. For more key dates and figures visit this page.
Small Business Basics
Business Startup Checklist
How to register to be self employed in the UK?
Do you pay Tax on Small Earnings in the UK?
Choosing a Business Name?
Do You Need a Business Bank Account in the UK?
How Much Should I Charge?
Limited company or sole trader – what’s the difference?
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