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Tax Refund from the United Kingdom: What You Need to Know

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Tax Refund from the UK: Key Information You Should Know

Tax Refund from the United Kingdom: What You Need to Know

Although the United Kingdom remains one of the most popular work destinations, many people still do not know that they can claim back overpaid income tax. Below you will find the key information that will help you prepare for the UK tax refund process.

1. How far back can you claim UK tax refunds?

You can usually claim a refund of overpaid income tax from the UK for the last 5 tax years. This means you can still submit a claim for previous periods, as long as the limitation period has not expired.

2. When does the UK tax year start and end?

In the United Kingdom, the tax year runs from 6 April to 5 April of the following year. You can start the refund process even before the tax year ends — especially if you have already left the UK. If you plan to return to the UK in the same tax year, it is usually better to wait until the end of the tax year.

3. Which documents are required?

To start the tax refund process, you should have at least one of the following documents:

  • P45 and/or P60 forms (issued by your employer);
  • If you do not have them – your payslips;
  • Copy of your passport or national ID card;
  • Your National Insurance number.

If some documents are missing, RTTAX specialists can help obtain them directly from your employer or the UK tax authorities.

4. Tax refunds for self-employed workers

If you worked as self-employed in the UK, you are required to submit a tax return every year. The deadline depends on how you file:

  • Paper tax return: by 31 October;
  • Online tax return: by 31 January of the following year.

Late submissions may result in penalties starting from £100 and increasing monthly. If the return is not submitted for a full year, the fine can exceed £1,000. In such cases, it is worth contacting specialists, as some penalties may be reduced or cancelled.

5. How to start your UK tax refund

If you worked in the United Kingdom and believe that you overpaid income tax, you can start the process online. Complete the registration form , upload the documents you have, and RTTAX specialists will assess your situation and help you submit your claim.

You can also use our free tax refund calculator to find out whether you may be entitled to a refund and how much you could receive.

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