September 5 2026 Tax. The 2025/26 tax year begins on 6 april 2025 and ends on 5 april 2026. Online submissions of your 2024/2025 tax return must be made by the end of this day.
Download our tax tables to see all the main tax rates thresholds and allowances for areas such as income tax, ni, capital gains. By breaking down key components and.
