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Tax Calendar

The red text indicates an entry relevant to companies and employers, black refers to personal tax, and bold indicates an important item. Click on a date to find out more detail of how it may affect you.

If you would like to receive email reminders before these key tax dates from our taxREMINDER system, then click here to register on our website. If you have already registered and would like to change your taxREMINDER options then click here to log on.

December 2017
Friday 1 Advisory Fuel Rates.
Tuesday 19 PAYE, Student loan and CIS deductions are due for the month to 5th December 2017.
Saturday 30 Online filing deadline for submitting 2016/17 self assessment return if you require HMRC to collect any underpaid tax by making an adjustment to your 2018/19 tax code.
January 2018
Friday 19 PAYE, Student loan and CIS deductions are due for the month to 5th January 2018.
Friday 19 PAYE quarterly payments are due for small employers for the pay periods 6th October 2017 to 5th January 2018
Wednesday 31 Deadline for submitting your 2016/17 self assessment return (100 automatic penalty if your return is late) and the balance of your 2016/17 liability together with the first payment on account for 2017/18 are also due.
February 2018
Friday 2 Deadline for submitting P46(car) for employees whose car/fuel benefits changed during the quarter to 5th January 2018.
Monday 19 PAYE, Student loan and CIS deductions are due for the month to 5th February 2018.
March 2018
Thursday 1 Advisory Fuel Rates.
Saturday 3 5% late payment penalty on any 2016/17 outstanding tax which was due on 31st January 2018 and still remains unpaid.
Monday 19 PAYE, Student loan and CIS deductions are due for the month to 5th March 2018.
Saturday 31 Last minute planning for tax year 2017/18.
April 2018
Thursday 19 Automatic interest is charged where PAYE tax, Student loan deductions, Class 1 NI or CIS deductions for 2017/18 are not paid by today. Penalties may also apply if any payments have been made late throughout the tax year.
Thursday 19 PAYE quarterly payments are due for small employers for the pay periods 6th January 2018 to 5th April 2018.
Thursday 19 PAYE, Student loan and CIS deductions are due for the month to 5th April 2018.
Thursday 19 Deadline for employers' final PAYE return to be submitted online for 2017/18.
May 2018
Thursday 3 Deadline for submitting P46(car) for employees whose car/fuel benefits changed during the quarter to 5 April 2018.
Saturday 19 PAYE, Student loan and CIS deductions are due for the month to 5th May 2018.
Thursday 31 Deadline for forms P60 for 2017/18 to be issued to employees.
June 2018
Friday 1 Advisory Fuel Rates.
Tuesday 19 PAYE, Student loan and CIS deductions are due for the month to 5th June 2018.
July 2018
Thursday 5 Deadline for reaching a PAYE Settlement Agreement for 2017/18.
Friday 6 Deadline for forms P11D and P11D(b) for 2017/18 to be submitted to HMRC and copies to be issued to employees concerned.
Friday 6 Deadline for employers to report share incentives for 2017/18.
Thursday 19 Class 1A NIC due for 2017/18.
Thursday 19 PAYE Student loan and CIS deductions due for the month to 5th July 2018.
Thursday 19 PAYE quarterly payments are due for small employers for the pay periods 6th April 2018 to 5th July 2018.
Tuesday 31 Second payment on account 2017/18 due.
August 2018
Thursday 2 Deadline for submitting P46 (car) for employees whose car/fuel benefits changed during the quarter to 5th July 2018.
Sunday 19 PAYE, Student loan and CIS deductions are due for the month to 5th August 2018.
September 2018
Saturday 1 Advisory Fuel Rates.
Wednesday 19 PAYE, Student loan and CIS deductions are due for month to 5th September 2018.
October 2018
Friday 5 Deadline for notifying HMRC of new sources of taxable income or gains or liability to the High Income Child Benefit Charge for 2017/18 if no tax return has been issued.
Friday 19 Tax and NI due under a 2017/18 PAYE Settlement Agreement.
Friday 19 PAYE, Student loan and CIS deductions are due for the month to 5th October 2018.
Friday 19 PAYE quarterly payments are due for small employers for the pay periods 6th July 2018 to 5th October 2018.
Wednesday 31 Deadline for submitting 'paper' 2017/18 self assessment returns.
Wednesday 31 Deadline for submission of 2017/18 self assessment returns if you require HMRC to compute your tax liability and/or if tax underpaid is to be collected by adjustment to your 2019/20 PAYE code.
November 2018
Friday 2 Deadline for submitting P46(car) for employees whose car/fuel benefits changed during the quarter to 5th October 2018.
Monday 19 PAYE, Student loan and CIS deductions are due for the month to 5th November 2018.
December 2018
Saturday 1 Advisory Fuel Rates.
Wednesday 19 PAYE, Student loan and CIS deductions are due for the month to 5th December 2018.
Sunday 30 Online filing deadline for submitting 2017/18 self assessment return if you require HMRC to collect any underpaid tax by making an adjustment to your 2019/20 tax code.

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