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Below are some key financial dates and deadlines for September 2017

1 September 2017

  • Payment of corporation tax liabilities for periods ended 30 November 2016 if not liable to pay by instalments.
  • Check HMRC website for changes to car mileage fuel rates.

7 September 2017

  • Due date for VAT return and payment for 31 July 2017 quarter (electronic payment).

14 September 2017

  • Quarterly corporation tax instalment payment for large companies.<
  • Monthly EC sales list if paper return used.

19 September 2017

  • Pay PAYE/construction industry scheme liabilities for month ended 5 September 2017 if by cheque.
  • File monthly construction industry scheme return.

21 September 2017

  • File online monthly EC sales list.
  • Intrastat — submit supplementary declarations for August 2017.

22 September 2017

  • PAYE/National Insurance contribution/student loan/construction industry scheme payments should be received by HMRC if paid online.

30 September 2017

  • Companies House should have received accounts of private companies with 31 December 2016 year end.
  • Companies House should have received accounts of public limited companies with 31 March 2017 year end.
  • HMRC should have received corporation tax self-assessment returns for companies having an accounting period ended 30 September 2016.
  • End of CT61 quarterly return period.
  • Business rates — small business relief claims for 2016-17 should be made to local authority by today. Businesses to reclaim EC VAT chargeable in 2016.