Tax return process

If you have worked in Great Britain during the last five years, you can file for a tax return. It is a simple procedure with RT Tax: register, gather the necessary documents, provide them to us, and we shall take care of the rest!

Clients from Great Britain usually get 753 GBP returned on average.


Register for a tax return. Immediately after the registration you shall receive the documents submission form and further instructions. Our consultants shall contact you in 24 hours and answer all potential questions.

You can also download the documents submission form on your own. Find its filling examples here. After filling it in, you will have to gather all the documents necessary for a tax return.

Documents necessary for a tax return:

A copy of your passport or ID card;

Official documents certifying the holder’s identity and citizenship.

A copy of National Insurance Number (NIN) (if you have it);

NIN is a unique number issued to you by the Department for Work and Pension for life. It is consists of 9 numbers.


NI Number

Copy of form P45 or/and P60 from all of your employers;

P45 – a document which contains information on a person’s income and paid taxes. It should be provided by employer at the time of leaving the employment.

P60 – a document which contains information on a person’s income and paid taxes. It should be provided in April.


Form P45

Form P60

Last payslips, if you do not have forms P45 or/and P60;

Payslip – a document which contains information on a person’s income and paid taxes. It should be issued be employer together with salary.


Last Payslip

A copy of CIS registration - UTR number (if you have it);

This document is required if you worked or registered as self-employed. UTR is a unique number issued by Great Britain tax authority. It consists of 10 digits.


CIS Voucher

If you worked as self-employed (with UTR) we will need one of the following: Subcontractor Monthly Statements, Payment Statements (CIS) or bank account statements.

Subcontractor Monthly Statement contains information on a person’s income and paid taxes.


Subcontractor Monthly Statement

NOTE: If you do not have all required documents – no problem! You can still begin your tax return process. Our experienced tax return experts shall retrieve your missing documents.

Submission of documents

Submit all the necessary documents and the documents submission form to us. Bring or send all the documents to our representative office via mail:

RT Tax
E. Ožeškienės 15
LT-44254 Kaunas

Having received your documents, we will begin your tax return process immediately and inform you. You can follow the process by logging in to an online account, created especially for you.

When the foreign tax office returns your taxes, you will be informed by e-mail about the successful tax refund.

Other services

If you were self-employed in the UK, you have to file tax return with the UK Tax Authorities each year. UK Tax Authorities will impose a penalty if a tax return is not submitted on time. RT Tax experts will help you to fill out self-employed tax form and anul or reduce a penalty.

Self-employed (zero) tax return

Those who work as self-employed in Great Britain, must submit tax returns to Great Britain tax authority every year. Paper tax returns have to be submitted by October 31 while electronically-filed tax returns must be submitted by January 31.

Anual tax return must be submitted even if you have registered as self-employed but did not work in Great Britain or traveled abroad and did not inform Great Britain tax authority. In such cases, you should submit zero tax return. Great Britain Tax authority will impose a penalty for late filling. The penalty for being late one month is 100 GBP and it increases every month. The penalty may reach 1300 GBP if tax return is not submitted in a year.

We may help you to fill out tax return forms, cancel or reduce penalties for late filling.

Necessary documents:

  • A copy of your passport or ID card;
  • A copy of National Insurance Number (NIN) certificate;
  • A copy of CIS registration – UTR number.

Do you have questions? We will answer them!

Can I file for the return of all the taxes from Great Britain?

If the income you have received in Great Britain for the year did not exceed the income tax threshold, you shall be returned all your taxes. If your yearly income is above that, you are only eligible to return the amount of income taxes you overpaid.

How long does the tax return process take?

Tax returns from Great Britain normally take 6-8 months, depending on the processes in Great Britain tax office. Currently we have delays. U.K. Tax Authorities are very slow in processing documents. When we receive your documents, we review and process them, prepare your income tax declarations and send it to the tax office at Great Britain in the shortest possible amount of time.

What are the service fees?

RT Tax does not apply any upfront or hidden charges, meaning, it shall cost you nothing to contact us in order to file for a tax return and the commission is only paid when the tax return process has been completed.

The charge for tax returns from Great Britain depends on the sum that is to be returned: 14% from the returned tax sum, but not less than 79 GBP.

If your missing P45/P60 forms need to be sought out, an additional charge of 20 GBP is applied.

Which years can I file a tax return for?

Taxes from Great Britain can be returned for as many as the last five years.

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RT Tax specialists are ready to provide you with the free professional consultations