Deadline for online submission of Self Assessment tax returns for year ending 5 April 2023 for HMRC to collect employment or pension income tax through PAYE tax codes if less than tax codes if less than £3,000 is owed. 30 December 2023
Deadline for online Self Assessment tax returns for 2021/22 tax year. 31 January 2023
Deadline for paying tax bill for tax year ending 5 April 2021/22. 31 January 2023
Deadline for 1st payment on account for tax year 2022/23. 31 January 2023 (midnight)
Deadline for claiming tax overpaid for the 2018/19 tax year under self-assessment. 5 April 2023
6 April 2023 – First day of the new tax year 2023/24.
Deadline for 2nd payment on account for income tax year ending 5 April 2023. 31 July 2023
Deadline to register with the HMRC if you became self-employed or started receiving income from property. You should submit a form CWF1 for self-employment or form SA1 for non-self-employed income to HMRC. 5 October 2023
Deadline for paper Self Assessment returns for 2022/23 tax year. 31 October 2023 (midnight)
Deadline for online submission of self-assessment tax returns for year ending 5 April 2022 for HMRC to collect employment or pension income tax through PAYE tax codes if less than tax codes if less than £3,000 is owed. 30 December 2023
Deadline for online self-assessment tax returns for 2022/23 tax year.
Deadline for paying tax bill for tax year ending 5 April 2022/23. 31 January 2024 (midnight)
End of tax year 2023/24 5 April 2024
PAYE Key Tax Dates
Deadlines
End of the last tax year and deadline for claiming your PAYE tax refund for the 2018/19 tax year. 5 April 2023
First day of the new tax year 2023/24. 6 April 2023
Copies of 2022/23 P60 documents issued to employees. 31 May 2023
Copies of 2022/23 P11D documents issued to employees. 6 July 2023