Key Financial Dates for UK Businesses in 2025
Staying ahead of important financial deadlines is essential for avoiding penalties and keeping your finances in order. Whether you’re a business owner managing tax returns, a self-employed professional juggling accounts, or a householder handling personal taxes, knowing key dates for 2025 can save you time, money, and stress. Here’s a comprehensive guide to the key financial dates, payment deadlines, and events for UK businesses and householders in 2025.
January 2025
1 January
- Self Assessment Tax Return Deadline: Final date to file your online self-assessment tax return for the 2023-24 tax year and pay any tax owed.
February 2025
7 February
- VAT Returns Due: Submission deadline for businesses whose VAT quarter ended on 31 December 2024.
28 February
- Deadline to pay your 23/24 self assessment tax and not incur a 5% penalty
April 2025
1 April
- New Business Rates Year: Start of the business rates year for 2025-26.
5 April
- End of 2024-25 Tax Year: Final day of the current tax year.
6 April
- Start of 2025-26 Tax Year: New tax codes come into effect for employees.
19 April
- RTI Submission Deadline: For final Real Time Information (RTI) submissions for PAYE in the 2024-25 tax year.
30 April
Employer Payment Summary (EPS) Deadline: Submit your final EPS and Full Payment Submission (FPS) for 2024-25.
July 2025
6 July
- P11D Submission Deadline: Submit forms detailing employee benefits and expenses for the 2024-25 tax year.
31 July
Self Assessment Second Payment on Account: Deadline to make your second payment on account for the 2024-25 tax year.
October 2025
5 October
- Register for Self Assessment: If you’re self-employed or have untaxed income for 2024-25, register with HMRC by this date.
31 October
- Paper Tax Return Deadline: Final day to file your self-assessment tax return by post for the 2024-25 tax year.
December 2025
31 December
- End of Calendar Year: Key date for businesses that operate on a calendar-year financial basis.
Tips for Staying Compliant in 2025
- Set Calendar Reminders: Add these key dates to your digital calendar to stay on track.
- Plan for Payments: Ensure you have funds set aside for tax and VAT payments.
- Seek Professional Help: Consult an accountant or financial advisor for assistance with filing and deadlines.
By staying aware of these key financial dates, you can avoid last-minute stress, stay compliant, and keep your finances running smoothly in 2025.