Planning ahead can make a huge difference in managing your finances. Whether you’re a business owner, finance director, or individual taxpayer, keeping track of key financial deadlines, from tax return dates and HMRC payment deadlines to Companies House filing requirements, is essential to avoid penalties and stay compliant.
In this guide, we’ve pulled together some of the most important financial dates for the year ahead, helping you stay organised, meet your obligations on time, and plan more effectively for cash flow, reporting, and tax.
April 2026
- 01 April 2026 – National Minimum Wage increase
- 06 April 2026 – Start of the new tax year
- 06 April 2026 – The new Statutory Sick Pay (SSP) reforms begin
- 06 April 2026 – Making Tax Digital (MTD) starts for those with income of £50,000 and above
- 19 April 2026 – Final Employer Payment Summary deadline
May 2026
- 31 May 2026 – Deadline to issue P60s to employees for 2025/26
July 2026
- 06 July 2026 – Deadline for the electronic submission of P11D & P11D(b) returns
- 19 July 2026 – Deadline for Class 1A NIC payment by cheque
- 22 July 2026 – Deadline for Class 1A NICs
October 2026
- 05 October 2026 – Deadline to register for Self Assessment
- 19 October 2026 – Deadline for PSA (Class 1B NICs) payment by cheque
- 22 October 2026 – Deadline for electronic PSA payments
This material is for informational purposes only and should not be relied upon as professional advice.
