Tax Return Self Assessment

The UK has one of the most complicated tax systems in the world. There are various deadlines and obligations that taxpayers should be aware off.

Self Assessment

The following are the most common reasons why you would need to complete a self assessment tax return:

  • You are self employed or a partner in a partnership.
  • You are a company director.
  • You have untaxed savings or investment income.
  • You own land or property that is being let out.
  • You have a capital gain liability.

HM Revenue & Customs staff are not responsible to advise you the best way to organise your tax affairs and minimise your tax liability.

Stewart Accounting Services use HMRC approved software to:

  • Prepare your tax return on before deadline.
  • Calculate your tax liability.
  • File your self assessment tax return online.
  • Correspond with you to advise your self assessment tax liability and when it is due.

Corporate Tax Return

Limited Companies are also responsible to prepare and submit a tax return. Stewart Accounting Service can assist you with your company tax obligations. We can:

  • Prepare your company’s tax return computations.
  • Prepare your company’s tax return.
  • Submit your company’s tax return online with HM Revenue and Customs together with your company accounts in IXBRL format.
  • Advise the amount of corporation tax that is due and when it is due.
  • Assist with minimising your corporation tax liability with timely pre year end tax planning.


As with self assessment tax returns, there are strict penalties and interest that will be applied if you don’t submit your corporate tax return at the correct time and pay your corporation tax by the due date. Taxwise seminar schedule available here.


As a small company a few years ago we were very unsure how to navigate the accounts side of things especially matters around HMRC, thankfully we sough advice from Stewarts accounting, Mark Stewart helped guide us and took care of everything, He also gave us advice on things outwith our terms and has also suggested some great software to help us get going. We have now made the transition to a medium sized company and Stewarts accountants have been great all the way. Mark is always available to talk. We would highly recommend this service.

Man Doing Computations On His Notebook