Personal Tax Deadline 2025 Uk. With many tax deadlines across the year for both individuals and businesses, it can be easy to forget key dates for the tax year ahead. This applies to those who prefer to file their returns in paper format.
The deadline for filing a 2023 to 2025 paper return is 31 october 2025. If you need to do a tax return, the deadline for submitting it for the uk tax year 2023/24 (6 april to 5 april) is midnight on 31 october 2025 if you’re submitting your return on.