Essential UK Tax Filing Deadlines: April – October 2025

🗓️ Essential UK Tax Filing Deadlines: April – October 2025

Staying on top of tax deadlines is essential for businesses, landlords, and individuals alike. Between April and October 2025, HMRC has scheduled a wide range of key filing dates and payment deadlines – from VAT and PAYE to Corporation Tax and Inheritance Tax. Missing these can lead to penalties, interest, or compliance headaches.

Below is your month-by-month guide to help you stay compliant and avoid last-minute stress.

🔹 April 2025: New Tax Year, New Deadlines

• 1 April – Start of the financial year 2025–26

• 5 April – Tax year 2024–25 ends

• 6 April – Tax year 2025–26 begins

• 7 April – VAT return/payment due for period ended 28 Feb

• 14 April – Corporation tax instalments and CT61 returns/payment due for quarter ended 31 Mar

• 19 & 22 April – PAYE, NICs, student loan, and CIS payments due

• 28 April – Plastic Packaging Tax returns/payment due

• 30 April –

  • Corporation tax returns due (accounting period ending 30 April 2024)

  • ATED return and payment due

  • Inheritance Tax due for October 2024 deaths

🔹 May 2025: PAYE & Benefits Reporting

• 3 May – P46 (car) forms due

• 5 May – Employment intermediary reports due

• 7 May – VAT returns due

• 14 May – Corporation tax instalments and CT61 returns due

• 17, 19 & 22 May – PAYE/CIS/NICs payments due

• 31 May –

  • Deadline to provide employees with P60s

  • Corporation tax returns due for periods ending 31 May 2024

🔹 June 2025: Corporation Tax & VAT Adjustments

• 1 June – Corporation tax due (accounting period ended 31 Aug 2024)

• 7 June – VAT returns due

• 14 June – Corporation tax instalments for large and very large companies

• 19 & 21 June – PAYE/CIS/NICs payments due

• 30 June –

  • CT returns due for periods ended 30 June 2024

  • VAT annual adjustments (partial exemption)

🔹 July 2025: Payroll Settlements & Benefits Reporting

• 5 July – Deadline to apply for a PAYE Settlement Agreement (PSA)

• 6 July – P11Ds, P11D(b), ERS returns, and termination benefits reporting due

• 7 July – VAT returns due

• 14 July – Corporation tax instalments and CT61 returns due

• 19, 22 July – PAYE/CIS/NICs and Class 1A NICs due

• 31 July –

  • Self-assessment second payment on account for 2024–25

  • Corporation tax return (accounting period ending 31 July 2024)

  • Pension annual allowance charge notifications

🔹 August 2025: VAT & Inheritance Tax

• 1 August – Corporation tax due (period ended 31 Oct 2024)

• 2 August – P46 (car) forms due

• 5 August – Employment intermediary reports due

• 7 August – VAT returns due

• 14 August – Corporation tax instalments for large/very large companies

• 19, 22 August – PAYE/CIS/NICs payments due

• 31 August – Corporation tax returns due, VAT annual adjustments, and IHT for Feb 2025 deaths

🔹 September 2025: Autumn Compliance Begins

• 1 September – Corporation tax due (period ended 30 Nov 2024)

• 7 September – VAT returns due

• 14 September – Corporation tax instalments

• 19, 20 September – PAYE/CIS/NICs due

• 30 September – CT returns and IHT for March 2025 deaths

🔹 October 2025: Self-Assessment & PSA Deadlines

• 1 October – Corporation tax due (period ended 31 Dec 2024)

• 5 October – Deadline to register for Self-Assessment

• 7 October – VAT returns due

• 14 October – Corporation tax instalments and CT61 due

• 18, 22 October – PAYE/CIS/NICs and PSA tax payments due

• 30 October – Rents returns for non-resident landlords

• 31 October – Paper self-assessment return deadline and IHT for April 2024 deaths

✅ Stay Compliant with Barnett & Co

Tax compliance can be time-consuming – but with the right support, it doesn’t have to be stressful.

At Barnett & Co Accountants, we help businesses, landlords, and self-employed professionals stay on track with all their filing deadlines. Whether it’s PAYE submissions, Corporation Tax returns, or preparing for MTD, our team is here to make your life easier.

📞 Need help managing your tax calendar? Get in touch with our team today.