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HMRC Self Assessment tax returns

Over 10 million people need to file an HMRC Self Assessment tax return every year before 31 January. You can set reminders for this and other important tax deadlines, or let an accountant take care all of your tax and filing obligations.

Self Assessment tax return

If you are self-employed, you need to let HMRC know by registering for Self Assessment with them. This done online or over the phone. You then must submit personal tax returns ("Self Assessment" returns) declaring your earnings for each tax year. You will pay any outstanding taxes before 31 January for the previous tax year.

You will need to complete a Self Assessment tax return if:

  • You are self-employed

  • You are a company director 

  • You have income from savings, investment or property (unless collected via PAYE)

  • You receive income from overseas

  • You have Capital Gains Tax to pay

  • You have an annual income of £100,000 or more

  • You have income from trusts, settlements and estates

If you haven’t filed your Self Assessment return by the deadline on the 31 January, you will be liable for a £100 penalty on 1 February.

We can assist you with advice about your return and with the return itself. Our process is simple, quick and very competitively-priced. We also quote in advance of the work so that you don’t get any surprises once your return is done. We lodge all our returns electronically as it is quicker and more secure. Our fees depend on the type and number of income streams you have. Contact us for a quote. 

We offer specialist, personalised, end-to-end accounting and tax advice

What to consider when choosing an accountant

The contractor accounting marketplace is a competitive space, and unfortunately there are many unregulated accounting companies out there. The industry is controlled by regulations and legislation that your accountant should be aware of. We advise you to consider the following aspects carefully when making this decision:

Make sure that you do this What Sable International does

Check that the accountant has a solid track record and a good reputation in the industry.

We are well-established in the industry, and have been in business for over 16 years.

Ensure that the accountant has professional qualifications or is registered with an accounting governing body.

We are regulated by the ICEAW.

Check that the accountant has professional indemnity insurance. If the advice provided to you was incorrect, you could claim for any financial loss suffered.

We have professional indemnity in place.

Look for a proactive accountant who includes all returns and accounts in their accounting package.

Our all-inclusive accounting services include the filing of all statutory returns and requirements.

Consider an accountant that provides other, complementary services. This will be a great added value to you, as all your professional matters can be dealt with in one place.

We also offer legal, offshore, immigration, tax and foreign exchange services.

Complementary services

When you're applying for a visa or a mortgage, you are often required to submit a substantial number of supporting documents. These requirements differ for salaried employees and those who are self-employed or working through a limited company.

Our accounting teams are experienced in putting together payslips, dividend certificates, financial or management accounts, accountants' letters and several other documents that you may need to support your application. We provide this service for free if you're one of our all-inclusive package clients, but we do rely on you to give us instruction on which documents the specific visa office or mortgage providers need.

For more information on visa and mortgage support documentation, contact our team on and one of our contractor accountants will be happy to advise you further.

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Our accounting team offers specialist, personalised, end-to-end accounting and tax advice. Our services will save you time and money, and by using specific tax planning strategies, we can minimise your taxes.

Typically, our clients come from a variety of backgrounds, including finance, accounting, IT, project management, management consulting, health and fitness and journalism.

We offer specialist, personalised, end-to-end accounting and tax advice

South Africa

Cape Town

Regent Square
Doncaster Road
Kenilworth 7708 +27 (0) 21 657 2120


25 Richefond Circle
Umhlanga 4320 +27 (0) 31 536 8843

United Kingdom


Castlewood House
77/91 New Oxford Street
WC1A 1DG +44 (0) 20 7759 7514


5-7 Selsdon Road
South Croydon
CR2 6PU +44 (0) 20 7759 7581



9 Yarra Street
South Yarra
VIC 3141 +613 (0) 8651 4500

Sable International is a trading name of 1st Contact Money Limited (company number 07070528), registered in England and Wales. We are authorised and regulated by the Financial Conduct Authority in the UK (FCA no. 517570), the Financial Services Conduct Authority in South Africa (1st Contact Money [PTY] Ltd - FSP no. 41900) and hold an Australian Financial Services License issued by ASIC to deal in foreign exchange (1st Contact Group - AFS License number 335 126).

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