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Posted April 15, 2025

Key Dates for the 2025/26 Tax Year: Stay Ahead of HMRC Deadlines

Introduction

As we enter the 2025/26 tax year, keeping track of important HMRC deadlines is essential for both individuals and businesses.  Missing these key dates can result in penalties, interest charges, and unnecessary stress. At Whitesides Chartered Accountants, we’ve compiled this comprehensive guide to help you stay organised and compliant throughout the tax year.

April 2025: The Beginning of the Tax Year

6 April 2025

  • The 2025/26 tax year officially begins
  • New tax rates, thresholds, and allowances come into effect
  • Start of the period for recording income and expenses for the new tax year

May 2025

31 May 2025

  • Deadline for P60s to be distributed to employees

July 2025

6 July 2025

  • Deadline for filing forms P11D and P11D(b) for the 2024/25 tax year

19 July 2025

  • Class 1A NIC payments for the 2024/25 tax year due

31 July 2025

  • Second payment on account for the 2024/25 tax year due

October 2025

5 October 2025

  • Deadline for notifying HMRC of new sources of taxable income or gains in the 2024/25 tax year if not registered for Self-Assessment

January 2026

31 January 2026

  • Deadline for filing Self-Assessment tax returns online for the 2024/25 tax year
  • Deadline for paying any remaining tax due for the 2024/25 tax year
  • First payment on account due for the 2025/26 tax year

April 2026

5 April 2026

  • End of the 2025/26 tax year

PAYE/NI Payment Deadlines

19th of the Month

  • Monthly PAYE and NIC Payments Due

22nd of the Month

  • If paying by direct debit, electronic payments for PAYE and NIC must clear HMRC’s account

VAT Deadlines

For VAT-registered businesses, deadlines typically fall one month and seven days after the end of your VAT quarter. If you’re using Making Tax Digital (MTD) for VAT, remember to:

  • Submit VAT returns online
  • Keep digital records
  • Use compatible software for your VAT accounting

Making Tax Digital (MTD) Updates

The MTD initiative continues to expand, from April 2026 more businesses and individuals will be required to comply with digital record-keeping and submission requirements. Stay informed about any changes to MTD that might affect you during the 2025/26 tax year.

How Whitesides Can Help

Keeping track of these deadlines while running your business can be challenging. At Whitesides Chartered Accountants, we provide:

  • Timely reminders for approaching deadlines
  • Complete tax return preparation and submission
  • Strategic tax planning to optimise your position
  • Support with digital compliance and MTD requirements
  • Personalised advice tailored to your specific situation

accountancy feesStay Ahead with Proactive Planning

The best approach to tax compliance is proactive planning. By marking these key dates in your calendar and preparing well in advance, you can avoid last-minute rushes and potential penalties.

Don’t wait until deadlines are looming. Contact our expert team today to discuss your tax requirements for the 2025/26 tax year and ensure you remain fully compliant while minimising your tax liability.

 

This guide is intended as general information only and should not be construed as professional advice. Tax regulations can change, and individual circumstances vary. Please contact us for advice specific to your situation.