Taxes 2025 Filing Date Uk. Balancing payment for tax year ended 5 april 2025 must also be made, and the first payment on account for tax year ended 5 april 2026. The standard uk tax year starts on 6th april and ends on 5th april of the following.
When does the uk tax year end? The deadline for submitting your online tax return is midnight on 31 january 2025.