Answers · UK 2025/26
When does the UK tax year start and end?
The UK tax year runs from 6 April to 5 April the following year. The 2026/27 tax year runs from 6 April 2026 to 5 April 2027.
Full answer
The UK tax year (also called the fiscal year) always starts on 6 April and ends on 5 April of the following year. This unusual date originates from the switch from the Julian to the Gregorian calendar in 1752. The current tax year is 2026/27, running from 6 April 2026 to 5 April 2027. Key deadlines in this cycle include: 31 July 2026 (second payment on account for 2025/26), 5 April 2027 (last day to use your 2026/27 ISA allowance of £20,000), and 31 January 2027 (Self Assessment filing and payment deadline for 2025/26). Employers run their payroll year to the same 5 April end date.
This answer is informational only and does not constitute financial, tax or legal advice. Figures are for the 2025/26 UK tax year. See our methodology and sources.