Our calendar can help you find all the key UK tax dates and deadlines for 2025-26. We have designed our tax year calendar to help businesses of all sizes across Essex take control of their finances and keep on top of tax deadlines.
All HMRC’s key tax dates are below, including deadlines for self-assessment, submitting VAT returns, and monthly PAYE dates for 2025-26.
When does the 2025-26 tax year begin and end?
The 2025-26 tax year runs from the 6th of April 2025 to the 5th ofApril 2026. Each tax or financial year has a series of important deadlines that are crucial for businesses, investors, and trustees to follow. Penalties can be applied by HMRC for late submissions and payments.
Remember – in addition to the following, you pay your PAYE payment to HMRC by the 19th of each month.
April 2025
- 6th April- The first day of the 2025/26 tax year.
- 19th April – Deadline for employers to submit a Full Payment Summary (FPS) and Employer Payment Summary (EPS) for the previous tax year.
- 30th April – Self-Assessment penalties take effect for late filing for the 2023/24 Return.
May 2025
- 31st May – Deadline for P60s for employees who were on your payroll on the 5th April 2024
July 2025
- 5th July – Deadline for providing P60s and P11Ds to employees.
- 6th July- Deadline for employers to report the total Class 1A National Insurance they owe.
- 22nd July- Employers must pay Class 1A National Insurance contributions by this date.
- 31st July- The deadline for the second payment on account for Self-Assessment.
Please note: If your P11D(b) is submitted late, you’ll get a penalty of £100 per 50 employees for each month. You’ll also be charged penalties and interest if you’re late paying HMRC.
October 2025
- 5th October- Deadline to register for Self-Assessment for the 2024/25 tax year
- 22nd October – Deadline to pay tax and Class 1B National Insurance if you have a PAYE settlement agreement.
- 31st October – Deadline to file your 2024-25 Self-Assessment tax year return if filing a paper return.
December 2025
- 30th December – Deadline to submit your tax return online to be able to pay your outstanding tax bill.
January 2026
- 31st January – Self-assessment tax return deadline. Last day to pay the balancing payment for 2024/25.
- 31st January – Deadline for the first payment on account for the 2025/26 tax year.
April 2026
- 6th April – Start of the 2026/27 tax year, bringing updated tax rates and possible reforms.
TBL Accountants Essex are your local accountancy firm operating in Southend and across Essex. We specialise in a variety of services as personal, business, and charity accountants. If you want to find out more, get in touch with our team today.
Here for you.
