Tax date
Friday, October 31, 2025

Deadline for postal submission of Self Assessment

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The "Deadline for postal submission of Self Assessment" is a crucial date in the United Kingdom for individuals to complete and send their Self Assessment tax returns by mail. Self Assessment is a system implemented by HM Revenue and Customs (HMRC) to gather income tax information from individuals who have additional sources of income or specific tax obligations beyond their regular employment. To ensure compliance, taxpayers must adhere to the prescribed deadline for mailing their tax returns to HMRC. Failure to meet this deadline may result in penalties or late filing fees. It's important to note that the specific date for the deadline may vary each year, so it's advisable to consult the latest HMRC guidelines or official resources to ascertain the exact deadline for a given tax year.

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