TTF Tackles the Money Monster Under Your Bed: Key Tax Deadlines You Can’t Ignore

"I used to think tax deadlines were just dates on a calendar — until I missed a few. The first time I got a late filing penalty, I chalked it up to bad luck. The second time, I promised myself it wouldn’t happen again. By the third, I realised I needed a plan.

HMRC doesn’t mess around when it comes to late payments and filings. I learned the hard way that missing a deadline—even by a day—can cost me more than just money. The stress of scrambling to correct things, the frustrating calls to HMRC, and the overwhelming feeling of being behind were enough to make me lose sleep.

This year, I’m determined to get it right. No more nasty surprises. I’ve marked my calendar, set up reminders, and made a list of the absolute must-know deadlines. If you’ve ever found yourself caught in a tax mess, this list might just save you too."

Staying ahead of tax deadlines doesn’t have to be overwhelming. You don't specifically mention your line of work or details about your financial situation so here are some key dates you may need to know from April to July 2025:

April 2025

1 April – Financial year 2025 begins.

5 April – Tax year 2024–25 ends; last date to register to payroll benefits in kind for 2025–26.

6 April – Tax year 2025–26 begins.

7 April – VAT returns and payments due for month/quarter ended 28 February 2025.

14 April – Corporation tax instalment payments due for large and very large companies.

14 April – CT61 returns and payments due for quarter ended 31 March 2025.

19 April – CIS returns due; PAYE, NICs, student loan deductions due (non-electronic payments).

22 April – PAYE, NICs, student loan deductions due (electronic payments).

30 April – Corporation tax return due for accounting periods ended 30 April 2024; inheritance tax due for deaths in October 2024.

May 2025

1 May – Corporation tax due for accounting periods ended 31 July 2024 (if not payable by instalments).

7 May – VAT returns and payments due for month/quarter ended 31 March 2025.

14 May – Corporation tax instalment payments due for large and very large companies.

17 May – PAYE, NICs, student loan deductions due (non-electronic payments).

19 May – CIS returns due; EPS submissions for HMRC reductions.

22 May – PAYE, NICs, student loan deductions due (electronic payments).

31 May – Deadline for employers to give employees P60s for 2024–25.

June 2025

1 June – Corporation tax due for accounting periods ended 31 August 2024 (if not payable by instalments).

7 June – VAT returns and payments due for month/quarter ended 30 April 2025.

14 June – Corporation tax instalment payments due for large and very large companies.

19 June – CIS returns due; PAYE, NICs, student loan deductions due (non-electronic payments).

21 June – PAYE, NICs, student loan deductions due (electronic payments).

30 June – Corporation tax return due for accounting periods ended 30 June 2024; inheritance tax due for deaths in December 2024.

July 2025

1 July – Corporation tax due for accounting periods ended 30 September 2024 (if not payable by instalments).

5 July – Deadline for applying for a PAYE Settlement Agreement (PSA) for 2024–25.

6 July – P11Ds and P11D(b) for 2024–25 due to be submitted.

7 July – VAT returns and payments due for month/quarter ended 31 May 2025.

14 July – Corporation tax instalment payments due for large and very large companies.

19 July – CIS returns due; Class 1A NIC due for 2024–25 (non-electronic payments).

22 July – Class 1A NIC due for 2024–25 (electronic payments).

31 July – Personal and trustee second self-assessment payments on account due for 2024–25.

Not all of these deadlines will be pertinent to you but by noting the ones of importance and keeping an eye on the crucial ones, you can avoid costly penalties and keep your financial house in order. I’ve already set my reminders—have you?

Let’s tackle this money monster together and take control of our tax responsibilities once and for all!

Capital Gains Tax Expertise: The Tax Faculty LLP Managing Partner Charles Tateson Named UK Capital Gains Tax Advisor of the Year 2023

The Finance Monthly Taxation Awards recognises the achievements of tax professionals from around the globe.

Winning such an award is no small feat. It is a reflection of hard work, extensive knowledge, and an ability to navigate the intricacies of the UK tax system.

Read more about Charles and the award here.

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