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Tax Calendar: Important Dates & Deadlines October - November 2018

Now updated with November dates, here's a list of important tax dates and deadlines for the coming months.

October 2018

  • 1st Minimum wage rate's for those under 24 year old and those on Apprenticeships, increases-see rates here.
  • 5th Deadline for those not registered for self assessment with new, tax liable income or capital gains in 2017/18, or new income making them liable to the High Income Child Benefit Charge, to inform HMRC. A penalty for failure to notify may apply if late. You will need to complete form CWF1 for self employment or form SA1 for non self employed income, or form SA401 for partners
  • 29th UK Budget Day
  • 31st Deadline for paper Self Assessment tax return for the year ended 5th April 2018.
  • 31st Deadline for 2017/18 Self Assessment tax returns for those who wish HMRC to calculate tax owing, and if under £3,000, have HMRC collect the tax through the employees 2019/20 PAYE tax code. Can be submitted electronically up to 30th Dec 2018.

Below dates are relevant for Employers only

  • 14th CT61 for previous quarter to be submitted and tax owing to be paid.
  • 19th (22nd if paid electronically) Last date to pay outstanding PAYE and Nat. Ins agreed with HMRC from 2017/18.
  • 19th (22nd if paid electronically) PAYE, Nat. Ins.,Student Loan & C.I.S. Monthly deductions due.
  • 19th (22nd if paid electronically), 3rd quarter PAYE/Nat. Ins. payments due for period 6th July to 5th Oct 2016.

1st October is a common commencement date. Most UK laws and regulations affecting businesses come into effect on the common commencement dates of 1 April or 1 October each year. 

November 2018

  • 1st £100 fine for late paper 2018 Self Assessment return (Not relevant if making online Self Assessment return).
  • 1st Any self assessment tax return form issued after this date will not be due by the 31st Jan 2019. You have 3 months from the date oif issue on the tax return form. (This 3 month return window also applies to due dates of balancing payments and CGT.)

Below dates are relevant for Employers only 

  • 2nd Deadline to notify HMRC of changes to employees car/fuel benefit (P46) from previous quarter.
  • 19th (22nd if paid electronically) PAYE, Nat. Ins.,Student Loan & C.I.S. Monthly deductions due.

If there are any relevant tax dates we are not presently including in our tax calendar, please feel free to contact us to request their inclusion.

This article was published in our Tax Calendar section on 28/10/2018.

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  • Buy-to-let Landlords - Most Common Tax Mistakes Many new or aspiring landlords will often read, with alarm, about a campaign or some form of crackdown by HMRC on buy-to-let landlords, accompanied by warnings that landlords could potentially face tax bills of “thousands of pounds” plus interest, surcharges and penalties. What is it though that HMRC are actually looking for? Here’s an overview of the main categories of mistakes.
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