Home > Tax Calendar
PAYE Key Tax Dates
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Deadline
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End of the 2024/25 tax year and deadline for claiming PAYE tax refund for 2020/21
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5 April 2025
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First day of the 2025/26 tax year
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6 April 2025
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Issue P60 forms to employees for the 2024/25 tax year
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31 May 2025
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Issue P11D forms and agree any PAYE Settlement Agreements for 2024/25
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6 July 2025
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Self-Assessment Key Tax Dates
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Deadline
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Online filing deadline for 2023/24 tax return
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31 January 2025
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Deadline for paying 2023/24 balancing payment and 1st payment on account for 2024/25
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31 January 2025
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Deadline for claiming tax overpaid under Self-Assessment for 2020/21
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5 April 2025
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First day of the 2025/26 tax year
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6 April 2025
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Deadline for 2nd payment on account for tax year ending 5 April 2025
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31 July 2025
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Deadline to register for Self-Assessment if self-employed or receiving property income (submit CWF1 or SA1)
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5 October 2025
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Deadline for paper Self-Assessment tax returns for the 2024/25 tax year
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31 October 2025
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Deadline to submit online 2024/25 return if you want unpaid tax (under £3,000) collected through PAYE
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30 December 2025
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Online filing deadline and tax payment due date for 2024/25 Self-Assessment return
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31 January 2026
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End of the 2025/26 tax year
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5 April 2026
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