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October 2019: Key accounting dates for your diary

Key forthcoming deadlines and dates for tax practitioners.

05 October​

Income Tax Self Assessment (ITSA):

Deadline to notify chargeability for income tax/ capital gains tax for 2018/19 if not registered for self assessment. Complete form CWF1 for selfemployment or form SA1 for non-self-employed income or form SA401 for partners. This requirement also applies to trustees and any other persons potentially within ITSA.

06 October


Deadline for pension administrators to give a pension savings statement to scheme members if their pension inputs in the scheme in 2018/19 exceed the annual allowance.

15 October

US tax:

Deadline for US expatriates to file 2018 US tax returns if they have obtained a filing extension. If 2018 returns have not been filed by this date, the IRS may accept a written request for a further two-month extension to 15 December 2019.

19 or 22 October


Deadline for paying PAYE settlement agreement tax/Class 1B NIC liabilities for 2018/19. Postal payments must reach HMRC by 19 October and electronic payments be cleared in HMRC’s bank account by 22 October.

28 October

Stamp Duty Land Tax (SDLT):

Deadline for first-time buyers under shared-ownership schemes entered into before 29 October 2018 who were disadvantaged by the lack of SDLT relief to make a repayment claim to HMRC.

31 October


If the UK leaves the EU on this date without a deal, UK VAT registered businesses will have until 5pm to submit a refund claim for 2018 or 2019 for EU VAT using HMRC’s EU VAT refund electronic system.

Income Tax Self Assessment (ITSA):

Deadline for paper submission of self assessment tax returns for the tax year ended 5 April 2019 to be received by HMRC.

Corporation Tax Self Assessment (CTSA):

Returns for accounting periods ended 31 October 2018 should reach HMRC.

Company accounts:

Private companies with 31 January 2019 year-ends and public companies with 30 April 2019 year-ends should file their accounts at Companies House.

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