Here are the key tax dates and deadlines for 2024/25 tax year.
Make payment on the previous working day where the due date falls on a weekend/bank holiday.
Every month
- 19th Submit CIS contractors’ monthly return.
- 22nd PAYE/NICs/CIS deductions paid electronically for period ending 5th of the month (19th if not paying electronically).
Month end
- Submit corporation tax return (CT600) for year ending 12 months previously.
- Last day to amend corporation tax return (CT600) for year ending 24 months previously.
April 2024
- 1st Merger of the RDEC and R&D SME schemes.
- 6th:
- New dividend allowance and capital gains tax annual exempt amount.
- Higher rate of CGT reduced for residential property disposals.
- Changes to class 2 and class 4 NICs. Car and van fuel and van benefit charges frozen at 2023/24 rates.
- Basis period reforms in full operation.
- Cash basis becomes default basis for self-employed and most partnerships.
- Changes to some ISA rules.
- High income child benefit charge reduced.
- VAT thresholds increased.
July 2024
- 5th Last date to agree a new PAYE Settlement Agreement (PSA) for 2023/24.
- 6th Deadline for employers to return forms P11D (expenses) and P11D (b) (benefits) for 2023/24 to HMRC and provide copies to employees.
- 22nd Pay class 1A NICs (19 July if not paying electronically).
- 31st Confirm tax credit claims for 2023/24 and renewal for 2024/25. Second payment on account for 2023/24 income tax and class 4 NICs.
August 2024
- 1st Penalty of 5% of the tax due or £300, whichever is the greater, where the 2022/23 tax return has not been filed.
October 2024
- 5th Deadline to register for self-assessment for 2023/24
- 22nd Pay tax and class 1B NICs on PSAs (19th if not paying electronically).
- 31st Deadline for 2023/24 tax return if filed on paper.
December 2024
- 30th Deadline to submit 2023/24 tax return online to have underpaid PAYE tax collected through the 2025/26 tax code.
January 2025
- 31st:
- Submit 2023/24 self-assessment tax return online.
- Pay balance of 2023/24 income tax, class 4 NICs and CGT, plus class 2 NICs paid voluntarily.
- First payment on account for 2024/25 income tax and class 4 NICs.
February 2025
- 1st Initial penalty imposed where the 2023/24 tax return has not been filed or has been filed on paper after 31 October 2024.
March 2025
- 3rd First 5% penalty imposed on 2023/24 tax unpaid on 3 March.