Main Due Dates for Tax Payment

Income Tax, NIC and Capital Gains Tax – Self-assessment
31 Jan in tax year
Following 31 July

Following 31 Jan
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  • Normally 50% of previous year’s income tax (less tax deducted at source) and class 4 NIC
  • Balance of income tax and class 4 NIC, and all CGT and class 2 NIC
Inheritance Tax
On death Normally 6 months after month of death
Lifetime transfer 6 April – 30 September 30 April in following year
Lifetime transfer 1 October – 5 April 6 months after month of transfer
Corporation Tax
Self-Assessment: 9 months and 1 day after end of accounting period
  • Payable by instalments where profits are £1.5m or over. Normally payable in 7th, 10th, 13 and 16th months after start of accounting period.
  • Growing companies: no instalments where profits are £10m or less and the company was not a large company for the previous year.

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2018/19 Tax calendar

Make payment previous working day where due date falls on a weekend/bank holiday.


Every month

19 Pay PAYE/NIC/CIS deductions for period ending 5th of the month if not paying electronically. Submit CIS contractors’ monthly return.
22 PAYE/NIC/CIS deductions paid electronically should have cleared into HMRC bank account.


Month end

Submit CT600 for year ending 12 months previously.
Last day to amend CT600 for year ending 24 months previously.


April 2018

5 Submit final Full Payment Submission (FPS) or Employer Payment Summary (EPS) for 2017/18 and register to ‘payroll’ benefits and expenses in 2018/19.
6 First day of the 2018/19 tax year. Changes apply to tax allowances, rates and thresholds, and ISA limits. Start of new rules for employment termination payments. Auto-enrolment limits increase.
19 Final day to send a late FPS for 2017/18. (After 19 April corrections for 2017/18 must be made on an Earlier Year Update (EYU). A penalty will usually be charged.)
23 Interest accrues on employers’ unpaid PAYE and NIC for 2017/18 (20th if not paying electronically).

 

May 2018

1 Start of £10 daily penalty where the 2016/17 tax return has not been filed (charged for up to 90 days).
19 Deadline to submit payroll EYU for 2017/18.
31 Last day to issue 2017/18 P60s to employees.
July 2018
5 Last date to agree a 2017/18 PAYE Settlement Agreement (PSA).
6 Deadline for employers to return forms P11D and P11D (b) for 2017/18 to HMRC and provide copies to employees.
31 Confirm tax credit claims for 2017/18 and renewal for 2018/19.Second payment on account for 2017/18 income tax and Class 4 NIC.


August 2018

1 Penalty of 5% of the tax due or £300, whichever is the greater, where the 2016/17 tax return has not been filed.


October 2018

5 Deadline to register for self-assessment for 2017/18.
22 Pay tax and Class 1B NIC on PSAs (19th if not paying electronically).
31 Deadline for 2017/18 tax return if filed on paper.

 

December 2018

30 Deadline to submit 2017/18 tax return online to have underpaid PAYE tax collected through the 2019/20 tax code.

 

January 2019

31 Submit 2017/18 self-assessment tax return. Pay balance of 2017/18 income tax, Class 4 NIC, all of Class 2 NIC and CGT, plus first payment on account for 2018/19 income tax and Class 4 NIC.


February 2019

1 Initial penalty imposed where the 2017/18 tax return has not been filed or has been filed on paper after 31 October 2018.


March 2019

2 Last day to pay 2017/18 tax to avoid automatic 5% penalty.

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