Tax Rates 2023/24

Key dates and deadlines

Payment dates
Self assessment 2023/24 2022/23
1st payment on account 31 January 2024 2023
2nd payment on account 31 July 2024 2023
Balancing payment 31 January 2025 2024
Capital Gains Tax* 31 January 2025 2024
Other payment dates
Class 1A NIC 19 July 2024 2023
Class 1B NIC 19 October 2024 2023

Corporation tax is due 9 months and 1 day from the end of the accounting period, unless a ‘large’ company paying by quarterly instalments.

2022/23 Filing deadlines
Issue P60s to employees 31 May 2023
P11D, P11D(b) 6 July 2023
Self Assessment Tax Return (SATR) paper version 31 October 2023
Online SATR if outstanding tax to be included in 2024/25 PAYE code (if under £3,000)
30 December 2023
Online SATR 31 January 2024

*A CGT return is due within 60 days of completion of sale of UK land and buildings by a non-resident and of sale of UK residential property with a tax liability by a UK resident. Any CGT payable is also due within 60 days.