The second 2023/24 self-assessment payment on account for income tax and Class 4 National Insurance Contributions (NICs) is due for payment on or before midnight on Wednesday 31 July 2024. Each payment on account is half of the previous year’s tax bill. Information on time to pay arrangements and how to apply is available on GOV.UK.
Anyone who is self-employed is required to make two payments on account for 2023/24 unless:
If a taxpayer knows that their tax bill for 2023/24 is going to be lower than that in 2022/23, a claim can be made to HMRC to reduce payments on account.
Each payment on account made should be 50 percent of the person’s total income tax and Class 4 NICs liability for 2022/23. If the final tax liability in 2023/24 is greater than the total payments on account made, a balancing payment will be due on or before 31 January 2025.