When do I need to pay my self assessment tax bill?

Self assessment tax payments are due by 31st January following the end of the tax year. For the 2024/25 tax year, when is self assessment payment due? The deadline is 31st January 2026. You must also pay any second payment on account by this date, with the first instalment due by the previous 31st July.

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When do I need to pay my self assessment tax bill?

Payments for your Self Assessment tax bill are due on:

  • 31st January: You’ll need to pay tax that you owe for the previous tax year, as well as your first payment on account. For the 2020/21 tax year, the first payment on account is due by 31 January 2021, while the balancing payment is due on 31 January 2022.
  • 31st July (following the end of the tax year): You’ll need to pay your second payment on account. For the 2020/21 tax year, the second payment on account will be due on 31 July 2021.


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