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Tax & HMRC

Understanding how tax works is essential if you’re self-employed.

This section covers everything you need to know about Income Tax, National Insurance, Self Assessment, VAT, and staying on the right side of HMRC.

Whether you’re just starting out as a sole trader or need help with deadlines, penalties or Making Tax Digital (MTD), our no-nonsense guides can help!

Start with these guides

  • How does self assessment work if you’re self-employed?
  • What is Making Tax Digital (MTD) for Income Tax?
  • What taxes do you pay if you work for yourself?
  • Use our 2025/26 tax year sole trader calculator
  • What is VAT and when do you have to register?
self asessment deadline small business owner

Over 5m yet to file self assessment returns – don’t miss the 31st Jan deadline!

January 8, 2025
HMRC says that by the start of 2025, over 5 million people had yet to file their self-assessment tax returns. Make sure you don't miss the deadline!
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HMRC late payment interest

Big gap between HMRC interest rate on late payments vs. refunds

November 13, 2024
In what one tax advisory calls the 'elephant in the room', there is a sizeable gap between the interest rate HMRC pays on late payments and the amount of interest it pays out on tax refunds.
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register for vat self employed

VAT registration – when should you register for VAT? Try HMRC’s handy estimator

September 5, 2024
If your business's "taxable supplies" over the past 12 months have exceeded the VAT registration threshold, you should register for VAT. As of April 2024, the VAT registration threshold increased…
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Brand new ByteStart guides
  • Accounting deadlines every self-employed person should know
  • Public liability insurance for sole traders (when you need it and when you don’t)
  • How to successfully start a small business in the evenings



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