Self Assessment: January 2027 Deadline – Are You Ready?
With the 31 January 2027 Self Assessment deadline approaching, now is the time to check whether you need to submit a tax return for the 2025–2026 tax year, which ran from 6 April 2025 to 5 April 2026.
Who Needs to Send a Tax Return?
You may need to send a Self Assessment tax return if you:
Were self-employed as a sole trader and earned more than £1,000 in gross trading income.
Were a partner in a business partnership.
Had to pay Capital Gains Tax after selling or disposing of an asset.
Had to pay the High Income Child Benefit Charge and do not pay it through PAYE.
Have certain untaxed income, such as property income, savings interest, dividends, tips, commission or foreign income.
What Are the Key Deadlines?
5 October 2026 – Deadline to register if you need to complete a Self Assessment tax return and have not previously registered.
31 October 2026 – Deadline for paper tax returns.
31 January 2027 – Deadline for online tax returns and payment of tax owed.
31 July 2027 – Second payment on account deadline, where applicable.
Late filing or late payment can result in penalties and interest.
Keep Your Records Ready
Make sure you have the information needed to complete your return, including records of income, expenses, bank statements, receipts and other relevant financial information.
ASESA's Advice
Don’t wait until January. Check whether you need to file, organise your records and prepare for any tax you may need to pay.
If you are unsure about your Self Assessment responsibilities, getting professional help early can make the process easier and help you avoid missing important deadlines.
Key Takeaway
Check your Self Assessment position now, keep your records organised and prepare early.
The 31 January 2027 deadline may seem some time away, but preparing early gives you time to check your information, complete your return and plan for any tax you may need to pay.
Need help with your Self Assessment?
ASESA Solutions Ltd can assist with Personal Tax Returns, bookkeeping, payroll and accounting services.
📞 020 3983 9881
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