An overview of key tax year dates
- Neena Dhesi
- Apr 1, 2023
- 2 min read
Updated: Jul 15, 2023

Knowing key tax dates for the year can really come in handy. It helps you stay organised and avoid those pesky penalties and fines from the tax man. Plus, it gives you plenty of time to prepare your tax documents and file your taxes without feeling rushed or stressed out.
By keeping up with these important dates, you can also take advantage of tax-saving opportunities like making contributions to retirement accounts or claiming deductions before the deadlines. So don't forget to mark your calendar and stay informed, it'll save you a lot of hassle and keep your finances in order.
Self-assessment tax return dates 2023/2024
5 April 2023
2022/23 tax year ends
6 April 2023
2024/24 tax year begins
31 July 2023
Second Payment on Account (POA) for Income Tax for 2022/23
5 October 2023
Deadline for Self Assessment registration to notify chargeability of Income Tax/Capital Gains Tax for 2022/23
19 October 2023
Deadline for postal payments of CIS, Class 1 B NICs and PAYE to HMRC
22 October 2023
Deadline for electronic remittance of CIS, Class 1 B NICs and PAYE to HMRC
31 October 2023
Deadline for postal submission of Self Assessment tax returns for tax year ended 5 April 2023 to be received by HMRC
30 December 2023
Deadline for online submission of Self Assessment tax returns for tax year ended 5 April 2023
31 December 2023
Due date to file company accounts with Companies House for limited companies with 31 March 2023 year end
14 January 2024
Income tax due date for CT61 period to 31 December 2023. Deadline for filing Self Assessment Tax Returns for tax year ended 5 April 2023 and 2022/23 Capital Gains Tax.
31 January 2024
Balancing payment of tax due for 2022/23 and first Payment on Account for Income Tax for 2023/24
5 April 2024
2023/24 tax year ends
6 April 2024
2024/25 tax year begins
Deadlines for submitting VAT returns 2023/24
The deadline for submitting your return is 1 month and 7 days after the end of the VAT period, whether you pay your VAT monthly or quarterly.
7 April 2023
Deadline for VAT returns and payments of Accounting Quarter period ending 28 February 2023
7 May 2023
Deadline for VAT returns and payments of Accounting Quarter period ending 31 March 2023
7 June 2023
Deadline for VAT returns and payment Accounting Quarter period ending 30 April 2023 if filed online
7 July 2023
Deadline for VAT returns and payments of Accounting Quarter period ending 31 May 2023
7 August 2023
Deadline for VAT returns and payments of Accounting Quarter period ending 30 June 2023
7 September 2023
Deadline for VAT returns and payments of Accounting Quarter period ending 31 July 2023
7 October 2023
Deadline for VAT returns and payments of Accounting Quarter period ending 31 August 2023
7 November 2023
Deadline for VAT returns and payments of Accounting Quarter period ending 30 September 2023
7 December 2023
Deadline for VAT returns and payments of Accounting Quarter period ending 31 October 2023
7 January 2024
Deadline for VAT returns and payments of Accounting Quarter period ending 30 November 2023
7 February 2024
Deadline for VAT returns and payments of Accounting Quarter period ending 31 December 2023
7 March 2024
Deadline for VAT returns and payments of Accounting Quarter period ending 31 January 2024
PAYE tax rates & thresholds 2023/24
Employee Personal Allowance: £12,570
Basic Rate Tax Band: 20% on income between £12,571 and £50,270
Higher Rate Tax Band: 40% on income between £50,271 and £150,000
Additional Rate Tax Band: 45% on income above £150,000
The standard tax code for 2023/24 is 1250L
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