Dates and Deadlines 

7th September 2021

  • VAT Return 
    Due date for July VAT returns unless exempt

19th September 2021

  • CIS Return 
    Construction Industry Scheme: monthly return due for period up to 5th of previous month 

30th September 2021

  • Company accounts filing deadline  
    Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends  

  • Corporation tax return  
    Filing deadline for corporation tax return self -assessment form ct 600 for period ended 30 September 2020 to be submitted to HMRC  

5th October 2021

  • Income tax and Capital Gains  
    Taxpayers who do not receive a self-assessment tax return to complete must notify HMRC by this date if they had income or capital gains in the previous tax year on which further tax is due.