Self-assessment tax

Self-assessment tax returns

Completing your self-assessment tax return can be a daunting and time-consuming process. Each year, thousands of taxpayers are penalised by HMRC and incur unwanted costs through missed deadlines, incorrect returns and lost records.

We can save you time, worry, and money by handling your self-assessment tax return for you. We will do all the necessary computations, complete your return, and even offer advice on how you can minimise your tax liability. Acting as your agent, we can deal directly with HMRC on your behalf, and, should you be selected for a self-assessment enquiry, act for you at any meetings.

How we can help with self-assessment:

  • Registering with HMRC on your behalf
  • Communicating with your bank, building society or financial advisor to gather the relevant information to complete your tax return (All subject to the relevant authorisations being provided)
  • Calculating your tax liability, completing your tax return and filing it on your behalf
  • Advising you of your tax liability and payment deadlines
  • Identifying tax saving solutions to ensure your self-assessment is completed in the most tax efficient manner

Self-assessment solved

We can offer advice on every aspect of your self-assessment tax return, and pride ourselves on communicating in an open, honest and transparent way, without unnecessary terminology and jargon.

Tax Returns on Time

Self-assessment requires that an individual’s tax liability is calculated correctly and that any tax owing is paid on time. In the event that a self-assessment return is not filed on time and tax owed is left outstanding, HMRC penalties apply as follows:

  • 1 day Overdue – £100 fine
  • 3 months Overdue – £100 fine and a further £10 per day
  • 6 months late – Another £300 or 5% of the tax due (whichever is highest)
  • 12 months late – All penalties above plus £300 or 5% of tax due

You can be assured that our knowledgeable and experienced team are on hand to answer any questions or queries and always with your individual circumstances in mind.

More information on deadlines and late penalty fees can be found on the Self-Assessment page on

Please note, in order to complete an online self-assessment, you will need a Unique Taxpayer Reference (UTR) number and this can take up to a week to arrive if you do not already have one.

    Self-assessment in south west london

    As an established provider of self-assessment services in the South West London region, we serve clients across Kingston, Surbiton, New Malden, Raynes Park, Wimbledon, Reigate, Chessington, Epsom, Sutton, Cheam, and Banstead.

    To discuss your tax return requirements, please get in touch to find out how we can help.

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      If you'd like to know more about how Kingston Burrowes can help manage your business or personal accounts, talk to one of our friendly team today.