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Deadlines

The dates that matter

So the fines don't. Miss the 31 January deadline and it's £100 straight away.

Self Assessment deadline 2027

Next up · 31 January 2026

Online return & payment deadline

File 2024/25 online and pay the balance, plus the first payment on account.

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days

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hours

  1. 5 April 2025 · passed

    End of the 2024/25 tax year

    Last day to use this year's ISA and pension allowances.

  2. 6 April 2025 · passed

    New tax year begins

    2025/26 starts. New rates and thresholds apply.

  3. 31 May 2025 · passed

    P60 deadline

    Employers must give you your P60.

  4. 5 October 2025 · passed

    Register for Self Assessment

    If you need to file for 2024/25 for the first time.

  5. 31 October 2025 · passed

    Paper tax return deadline

    2024/25 paper returns must reach HMRC.

  6. 30 December 2025 · passed

    Online return to collect via PAYE

    File by now to have tax under £3,000 collected through your tax code.

  7. 31 January 2026

    Online return & payment deadline

    File 2024/25 online and pay the balance, plus the first payment on account.

  8. 5 April 2026

    End of the 2025/26 tax year

    Last day to use this year's ISA and pension allowances.

  9. 6 April 2026

    New tax year begins

    2026/27 starts. New rates and thresholds apply.

  10. 31 May 2026

    P60 deadline

    Employers must give you your P60.

  11. 31 July 2026

    Second payment on account

    For the 2024/25 tax year.

  12. 5 October 2026

    Register for Self Assessment

    If you need to file for 2025/26 for the first time.

  13. 31 October 2026

    Paper tax return deadline

    2025/26 paper returns must reach HMRC.

  14. 7 November 2026

    MTD quarterly update, if you joined MTD in April 2026

    Late-submission points apply (4 points means a £200 penalty). No points for a late quarterly update in 2026/27, but it must be in before the return.

  15. 30 December 2026

    Online return to collect via PAYE

    File by now to have tax under £3,000 collected through your tax code.

  16. 31 January 2027

    Online return & payment deadline

    File 2025/26 online and pay the balance, plus the first payment on account.

  17. 7 February 2027

    MTD quarterly update, if you joined MTD in April 2026

    Late-submission points apply (4 points means a £200 penalty). No points for a late quarterly update in 2026/27, but it must be in before the return.

  18. 5 April 2027

    End of the 2026/27 tax year

    Last day to use this year's ISA and pension allowances.

  19. 6 April 2027

    New tax year begins

    2027/28 starts. New rates and thresholds apply.

  20. 7 May 2027

    MTD quarterly update, if you joined MTD in April 2026

    Late-submission points apply (4 points means a £200 penalty). No points for a late quarterly update in 2026/27, but it must be in before the return.

  21. 31 May 2027

    P60 deadline

    Employers must give you your P60.

  22. 31 July 2027

    Second payment on account

    For the 2025/26 tax year.

  23. 5 October 2027

    Register for Self Assessment

    If you need to file for 2026/27 for the first time.

  24. 31 October 2027

    Paper tax return deadline

    2026/27 paper returns must reach HMRC.

  25. 30 December 2027

    Online return to collect via PAYE

    File by now to have tax under £3,000 collected through your tax code.

  26. 31 January 2028

    Online return & payment deadline

    File 2026/27 online and pay the balance, plus the first payment on account.

  27. 31 July 2028

    Second payment on account

    For the 2026/27 tax year.

Not affiliated with HMRC. General information, not professional tax advice. Check GOV.UK or speak to a qualified adviser for your situation.