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Important Tax Deadlines & Events (Updated For 2025)

  • Written by Katie
  • April 9, 2025
  • Business News, Most Popular

It is crucial to stay on top of key tax dates to keep your financial affairs in order. Here’s a friendly reminder of the important tax deadlines this year.

 

2025 Tax Deadlines & Events By Month

January 2025

  • 1 January:
    • Corporation Tax Payment: Due for companies with an accounting period ending 31 March 2024 (unless quarterly instalments apply).
  • 19 January:
    • PAYE & NIC Deductions: Payment for the month ending 5 January 2025 is due.
    • Construction Industry Scheme (CIS) Return and Tax: Submission and payment for the month ending 5 January 2025 are due.
  • 31 January:
    • Self-Assessment Tax Return: Deadline for online submission for the 2023/24 tax year.
    • Balancing Payment: Due for the 2023/24 tax year.
    • First Payment on Account: Due for the 2024/25 tax year.

February 2025

  • 1 February:
    • Corporation Tax Payment: Due for companies with an accounting period ending 30 April 2024 (unless quarterly instalments apply).
  • 19 February:
    • PAYE & NIC Deductions: Payment for the month ending 5 February 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 February 2025 are due.
  • 28 February:
    • Late Payment Penalty: A 5% penalty is imposed on any 2023/24 tax still unpaid at this date unless a payment plan has been agreed with HMRC.

March 2025

  • 1 March:
    • Corporation Tax Payment: Due for companies with an accounting period ending 31 May 2024 (unless quarterly instalments apply).
  • 19 March:
    • PAYE & NIC Deductions: Payment for the month ending 5 March 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 March 2025 are due.

April 2025

  • 1 April:
    • Corporation Tax Payment: Due for companies with an accounting period ending 30 June 2024 (unless quarterly instalments apply).
  • 5 April:
    • End of the 2024/25 Tax Year: Ensure all tax planning actions are completed by this date.
  • 6 April:
    • Start of the 2025/26 Tax Year.
  • 19 April:
    • PAYE & NIC Deductions: Payment for the month ending 5 April 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 April 2025 are due.
  • 30 April:
    • Annual Tax on Enveloped Dwellings (ATED): Returns and payments for the chargeable period starting 1 April 2025 are due.

May 2025

  • 1 May:
    • Corporation Tax Payment: Due for companies with an accounting period ending 31 July 2024 (unless quarterly instalments apply).
  • 19 May:
    • PAYE & NIC Deductions: Payment for the month ending 5 May 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 May 2025 are due.
  • 31 May:
    • P60s: Deadline for employers to issue P60s to employees for the 2024/25 tax year.

June 2025

  • 1 June:
    • Corporation Tax Payment: Due for companies with an accounting period ending 31 August 2024 (unless quarterly instalments apply).
  • 19 June:
    • PAYE & NIC Deductions: Payment for the month ending 5 June 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 June 2025 are due.

July 2025

  • 1 July:
    • Corporation Tax Payment: Due for companies with an accounting period ending 30 September 2024 (unless quarterly instalments apply).
  • 5 July:
    • PAYE Settlement Agreements: Last date to agree on PAYE settlement agreements for the 2024/25 tax year.
  • 6 July:
    • P11D and P11D(b) Forms: Deadline for employers to submit forms P11D and P11D(b) for the 2024/25 tax year.
    • Share Schemes: Deadline to notify HMRC of shares and options awarded to employees.
  • 19 July:
    • PAYE & NIC Deductions: Payment for the month ending 5 July 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 July 2025 are due.
  • 31 July:
    • Second Payment on Account: Second payment on account due for the 2024/25 tax year.

August 2025

  • 1 August:
    • Corporation Tax Payment: Due for companies with an accounting period ending 31 October 2024 (unless quarterly instalments apply).
  • 19 August:
    • PAYE & NIC Deductions: Payment for the month ending 5 August 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 August 2025 are due.

September 2025

  • 1 September:
    • Corporation Tax Payment: Due for companies with an accounting period ending 30 November 2024 (unless quarterly instalments apply).
  • 19 September:
    • PAYE & NIC Deductions: Payment for the month ending 5 September 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 September 2025 are due.
  • 30 September:
    • Filing Deadline for Forms CT61: For quarter ending 30 September 2025.

October 2025

  • 1 October:
    • Corporation Tax Payment: Due for companies with an accounting period ending 31 December 2024 (unless quarterly instalments apply).
  • 5 October:
    • Register for Self-Assessment: Deadline for individuals who must file a self-assessment tax return for the first time for the 2024/25 tax year.
  • 19 October:
    • PAYE & NIC Deductions: Payment for the month ending 5 October 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 October 2025 are due.
  • 31 October:
    • Paper Tax Return Filing Deadline: For the 2024/25 tax year (if submitting a paper return).

November 2025

  • 1 November:
    • Corporation Tax Payment: Due for companies with an accounting period ending 31 January 2025 (unless quarterly instalments apply).
  • 19 November:
    • PAYE & NIC Deductions: Payment for the month ending 5 November 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 November 2025 are due.

December 2025

  • 1 December:
    • Corporation Tax Payment: Due for companies with an accounting period ending 28 February 2025 (unless quarterly instalments apply).
  • 19 December:
    • PAYE & NIC Deductions: Payment for the month ending 5 December 2025 is due.
    • CIS Return and Tax: Submission and payment for the month ending 5 December 2025 are due.
  • 30 December:
    • Online Self-Assessment Filing Deadline: For individuals who want tax collected through their PAYE code (applicable for income under £3,000).

General Notes for Annual Updates

  • This calendar is based on typical UK tax deadlines. Some specific dates may vary based on weekends, public holidays, or changes to tax rules.
  • Always verify deadlines with HMRC or one of our tax advisors each year to ensure compliance.

Need more information?

At A&C Chartered Accountants, we’re not just accountants; we’re your partners in success. Based in Manchester, our experienced team handles everything from managing limited company and sole trader accounts to expertly navigating tax returns. Beyond financials, we play a crucial role in driving your business’s growth, strategically steering it towards success with confidence and clarity.

To get in touch, fill out a contact form or call on 0161 962 1855.

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