January 2018
1 Due date for payment of Corporation Tax for period ended 31 March 2017.
14 Due date for income tax for the CT61 quarter to 31 December 2017.
19/22 Quarter 3 2017/18 PAYE remittance due.
31 First self assessment payment on account for 2017/18.
Capital gains tax payment for 2016/17.
Balancing payment – 2015/16 income tax/Class 4 NICs.
Deadline for amending 2015 Tax Return.
Last day to file the 2016 Tax Return online without incurring penalties.
February 2018
1 £100 penalty if 2017 Tax Return not yet filed online. Additional penalties may apply for further delay. Interest starts to accrue on 2015/16 tax not yet paid.
2 Submission date of P46 (Car) for quarter to 5 January.
14 Last date (for practical purposes) to request NIC deferment for 2017/18.
March 2018
1 New advisory fuel rates for users of company cars effective from today.
Last day to pay any balance of 2015/16 tax and Class 4 NICs to avoid an automatic 5% late payment penalty.
31 End of Corporation Tax financial year.
End of CT61 quarterly period.
Filing date for Company Tax Return Form CT600 for period ended 31 March 2017.
April 2018
5 Last day of 2017/18 tax year.
Deadline for 2017/18 ISA investments.
Last day to make disposals using the 2017/18 CGT exemption.
14 Due date for income tax for the CT61 period to 31 March 2017.
19/22 Quarter 4 2017/18 PAYE remittance due.
30 Normal annual adjustment for VAT partial exemption calculations (monthly returns).
May 2017
1 Start of daily penalties for 2017 online Tax Return not yet filed. Additional penalties may apply for further delay.
3 Submission date of P46 (Car) for quarter to 5 April.
31 Last day to issue 2017/18 P60s to employees.
June 2017
1 New advisory fuel rates for users of company cars effective from today.
30 End of CT61 quarterly period.
Annual adjustment for VAT partial exemption calculations (March VAT year end).
July 2018
6 Deadline for submission of employment related securities annual returns.
File Taxed Award Scheme Returns, file P11Ds, P11D(b)s and P9Ds. Issue copies of P11Ds or P9Ds to employees.
Deadline for entering into a PAYE Settlement Agreement for 2017/18.
14 Due date for income tax for the CT61 period to 30 June 2018.
19/22 Quarter 1 2018/19 PAYE remittance due.
Final date for payment of 2017/18 Class 1A NICs.
31 Second self assessment payment on account for 2017/18.
Annual adjustment for VAT partial exemption calculations (April VAT year end).
Deadline for tax credit Annual Declaration (if estimated, final figures required by 31/01/19).
August 2018
2 Submission date of P46 (Car) for quarter to 5 July.
31 Annual adjustment for VAT partial exemption calculations (May VAT year end).
September 2018
1 New advisory fuel rates for users of company cars effective from today.
30 End of CT61 quarterly period.
Last day for UK businesses to reclaim EC VAT chargeable in 2017.
October 2018
1 Due date for payment of Corporation Tax for period ended 31 December 2017.
5 Individuals/trustees must notify HMRC of new sources of income/chargeability in 2017/18 if a Tax Return has not been received.
14 Due date for income tax for the CT61 quarter to 30 September 2018.
19/22 Quarter 2 2018/19 PAYE remittance due.
31 Last day to file 2018 paper Tax Return without incurring penalties.
November 2018
1 £100 penalty if 2018 paper Tax Return not yet filed. Additional penalties may apply for further delay (no penalties if online return filed by 31 January 2019).
2 Submission date of P46 (Car) for quarter to 5 October.
December 2018
1 New advisory fuel rates for users of company cars effective from today.
30 Last day for online submission of 2018 Tax Return for HMRC to collect tax through clients’ 2019/20 PAYE code, where they owe less than £3,000.
31 Last day for non-EU traders to reclaim recoverable UK VAT suffered in the year to 30 June 2018.
End of relevant year for taxable distance supplies to UK for VAT registration purposes.
End of relevant year for cross-border acquisitions of taxable goods in the UK for VAT registration purposes.
End of CT61 quarterly period.
Filing date for Company Tax Return Form CT600 for period ended 31 December 2018.
January 2019
1 Due date for payment of Corporation Tax for period ended 31 March 2018.
14 Due date for income tax for the CT61 quarter to 31 December 2018.
19/22 Quarter 3 2018/19 PAYE remittance due.
31 First self assessment payment on account for 2018/19.
Capital gains tax payment for 2017/18.
Balancing payment – 2017/18 income tax/NICs.
Last day to renew 2018/19 tax credits.
Deadline for amending 2017 Tax Return.
Last day to file the 2018 Tax Return online without incurring penalties.
February 2019
1 £100 penalty if 2018 Tax Return not yet filed online. Additional penalties may apply for further delay. Interest starts to accrue on 2017/18 tax not yet paid.
2 Submission date of P46 (Car) for quarter to 5 January.
14 Last date (for practical purposes) to request NIC deferment for 2018/19.
March 2019
1 New advisory fuel rates for users of company cars effective from today.
2 Last day to pay any balance of 2017/18 tax and NICs to avoid an automatic 5% late payment penalty.
31 End of Corporation Tax financial year.
End of CT61 quarterly period.
Filing date for Company Tax Return Form CT600 for period ended 31 March 2018.