Important UK Tax Processes and Dates You Should Remember

Take note of key tax activities and dates to avoid penalties that will leave a dent in your pocket and affect your UK tax refund.

If you are penalised, you need to pay a fine to HMRC that will ruin the plans you have for your tax rebate. A £100 fine hurts.

So, get your pen and paper ready and take note of these dates. You should also create events/reminders on your calendar.

Table of Contents

For PAYE Tax Processes

First day of the new tax year – For the tax year 2019/20, the first day is on 6 April 2019.
Deadline for PAYE tax refund – For the tax year 2014/15 tax year, the deadline for claiming a tax refund is on 5 April 2019.
Date you will receive a copy of P60 documents – Documents will be issued to employees on 31 May 2019.
Date you will receive a copy of P11d documents – Documents will be issued to employees on 6 July 2019.
End of tax year – For the tax year 2019/20, the last day is 5 April 2020.

Deadline to file UK self-assessment tax return – For the tax year 2017/18, deadline is on 31 January 2019.
Deadline to pay whatever tax owed for the same tax year – You must pay them in full by 31 January 2019.
Deadline for the 1st payment for 2018/19 tax year – You must make the first payment on 31 January 2019.
Deadline for claiming overpaid tax – For the 2014/15 tax year, the deadline is on 5 April 2019.
End of tax year for self-assessment – For the 2018/19 tax year, the last day is on 5 April 2019.
First day of the new tax year – For the 2019/20 tax year, the first day is on 6 April 2019
Deadline to make the 2nd payment – For the tax year ending on 5 April 2019, 2nd payment must be made on 31 July 2018.

For more information on key dates, visit HMRC at GOV.uk.