What are the Tax Return Key Dates 2025
Knowing the Tax Return Key Dates 2025 is essential if you want to stay compliant, avoid penalties, and keep your financial affairs in order. Whether you’re employed, self-employed, or running a business, it’s important to prepare early and understand when your obligations are due.
At TRW Accountants, we help individuals and businesses across Kent meet all HMRC deadlines with accuracy and ease.
Key Self-Assessment Tax Return Deadlines
5 April 2025 – End of the 2024/25 Tax Year
This marks the end of the tax year. Any income earned or expenses claimed after this date will fall into the 2025/26 tax period. Keeping your records up to date throughout the year ensures a smoother filing process.
31 January 2026 – Online Tax Return Deadline and Payment Due
If you’re filing online, your tax return must be submitted by midnight on 31 January 2026. This is also the date by which any tax owed must be paid, including your first payment on account for the next tax year. You can find more about tax returns and how we can help prepare them accurately.
31 October 2025 – Paper Tax Return Deadline
If you prefer to file a paper tax return, HMRC must receive it by 31 October 2025. Filing by post gives less time, so it’s crucial to get everything completed well in advance.
5 October 2025 – Register for Self-Assessment
If you haven’t filed a Self Assessment before, or have started new self-employed income, you must register with HMRC by 5 October 2025 to avoid late filing penalties.
31 July 2025 – Second Payment on Account
If you make payments on account, the second instalment is due by 31 July 2025. This payment goes towards your tax bill for the current year.
30 December 2025 – PAYE Collection Option
If your tax bill is less than £3,000 and you’d prefer HMRC to collect it through your PAYE tax code, you must file online by 30 December 2025.
Why Meeting These Deadlines Matters
Missing deadlines often results in automatic penalties. For instance, even filing one day late can trigger a £100 fine. If the return is three months late or more, additional charges apply. Interest is also charged on any unpaid tax. Staying aware of the HMRC manuals and up-to-date deadlines helps avoid unnecessary costs and stress.
How to Stay Organised
To ensure you don’t miss these key dates:
- Keep track of important deadlines on a calendar or planner
- Use a professional bookkeeping service to maintain accurate records
- Budget ahead for any tax owed by calculating liabilities early
- Seek help from qualified accountants if anything is unclear
Proper planning makes tax season far less stressful, especially for small business owners and self-employed individuals.
How TRW Accountants Can Help
At TRW Accountants, we take the stress out of filing and managing your tax responsibilities. We help clients across Kent navigate all the Tax Return Key Dates 2025, ensuring nothing is missed and every submission is handled correctly.
Our services include:
- Accurate tax return preparation and submission
- Advice on payment planning and deadlines
- Support for PAYE and self-employment tax
- Full compliance with HMRC income tax rules
We offer clear and reliable accounting support for individuals, sole traders, and companies. If you’re unsure about any upcoming deadline or need professional assistance, we’re here to help.
To speak with an expert about your tax obligations, simply contact us today.