HMRC Important filing deadlines

Important Deadlines for individuals, self-employed and CIS subcontractors

Individuals, sole traders and CIS subcontractors Filing deadline
Second payment on account for 2016/17 tax year 31 July 2017
Deadline to advise HMRC that you need to register for self-assessment for the tax year 2016/17 5 October 2017
Deadline for filing Self-Assessment Tax Return with HMRC if you would like to pay tax to be collected through your PAYE code 31 December 2017
Deadline for filing self-assessment tax return for the tax year 2016/17 31 January 2018
Deadline for making payment for any tax liability for the tax year 2016/17 31 January 2018
Deadline for making the balancing payment for 2016/17 tax liability 31 January 2018
Deadline for making the first payment on account for 2017/18 tax year 31 January 2018

Important deadlines for Companies

Companies House - Company Statutory Accounts filing
Company accounts must be submitted within 9 months of the end of the accounting year or from incorporation date if first year filing e.g. year end 31 May 2017, the deadline to file the accounts with companies house would be 28 February 2018. If the accounts are for the first accounting year end and the incorporation date is 17 May 2017, the deadline would be 17 February 2017.

Companies House Deadlines for filing the accounts with the accounting year ended: Filing deadline
31 Janaury 2017 - nine months after year end 31 October 2017
28 February 2017 - nine months after the year end 30 November 2017
31 March 2017 - nine months after the year end 31 December 2017
30 April 2017 - nine months after the year end 31 January 2018
31 May 2017 - nine months after the year end 28 February 2018
30 June 2017 - nine months after the year end 31 March 2018
31 July 2017 - nine months after the year end 30 April 2018
31 August 2017 - nine months after the year end 31 May 2018
30 September 2017 - nine months after the year end 30 June 2018
31 October 2017 - nine months after the year end 31 July 2018
30 November 2017 - nine months after the year end 31 August 2018
31 December 2017 - nine months after the year end

Corporation Tax Return (CT600)
Corporation Tax Return (CT600) must be submitted within 12 months after your accounting year-end e.g. year end 31 May 2017, the deadline for the submission of corporation tax return with HMRC would be 31 May 2018.

Monthly CIS Returns

CIS Returns must reach by 19 of each month Filing deadline
6 January 2017 to 5 February 2017 19 February 2017
6 February 2017 to 5 March 2017 19 March 2017
6 March 2017 to 5 April 2017 19 April 2017
6 April 2017 to 5 May 2017 19 May 2017
6 May 2017 to 5 June 2017 19 June 2017
6 June 2017 to 5 July 2017 19 July 2017
6 July 2017 to 5 August 2017 19 August 2017
6 August 2017 to 5 September 2017 19 September 2017
6 September 2017 to 5 October 2017 19 October 2017
6 October 2017 to 5 November 2017 19 November 2017
6 November 2017 to 5 December 2017 19 December 2017
6 December 2017 to 5 January 2018 19 January 2017

Quarterly VAT Returns

Quarterly VAT Returns filing due dates and payments deadline Filing deadline
Quarter ended 31 January 2017 7 March 2017
Quarter ended 28 February 2017 7 April 2017
Quarter ended 31 March 2017 7 May 2017
Quarter ended 30 April 2017 7 June 2017
Quarter ended 31 May 2017 7 July 2017
Quarter ended 30 June 2017 7 August 2017
Quarter ended 31 July 2017 7 September 2017
Quarter ended 31 August 2017 7 October 2017
Quarter ended 30 September 2017 7 November 2017
Quarter ended 31 October 2017 7 December 2018
Quarter ended 30 November 2017 7 January 2018
Quarter ended 31 December 2017 7 February 2018

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