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UK tax dates

The deadlines that matter for the next year. Add them to your calendar with a reminder a week before each one.

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Works with Google Calendar, Apple Calendar and Outlook, with a reminder a week before each date.
  1. Paper Self Assessment deadlinePaper return for 2025/26 (the online deadline is 31 January).
  2. Self Assessment: file online and payOnline return for 2025/26, any tax still owed for it, and the first payment on account for 2026/27.
  3. Tax year endsLast day of the 2026/27 tax year.
  4. New tax year startsFirst day of 2027/28. New rates and allowances apply.
  5. Second payment on accountSecond advance payment towards 2026/27, if HMRC asked for payments on account.
  6. Register for Self AssessmentIf you started working for yourself in 2026/27.
  7. Paper Self Assessment deadlinePaper return for 2026/27 (the online deadline is 31 January).
Your own deadlines, worked out for you.Fenquist adds your VAT quarters, company year end and payment dates to the Tax page, with the amounts it expects.
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Never miss a tax date.

Fenquist shows your own deadlines with the amounts it expects, on the Tax page.

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