Nundina › Discover calendars › Tax Deadlines calendar › 🇬🇧 Self Assessment Paper Return Deadline (United Kingdom)🇬🇧 Self Assessment Paper Return Deadline (United Kingdom)31 October 2026Deadline for HMRC to receive a paper 2025/26 Self Assessment tax return. Verified via GOV.UK "Self Assessment tax returns: Deadlines", 2026-07.Tax Deadlines calendarMore from this calendar

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