Self Assessment Deadline 2026: What Happens the Moment You Miss It
A Self Assessment tax return is used to report income and calculate the tax you owe to HM Revenue & Customs (HMRC). It is commonly required for self-employed people.
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Missing your self assessment deadline can cost you hundreds in penalties. We walk you through exactly what HMRC requires, what expenses you can claim, and how to avoid the most common mistakes Yorkshire sole traders make every year.
12 June 2025
8 min read
Self Assessment

A Self Assessment tax return is used to report income and calculate the tax you owe to HM Revenue & Customs (HMRC). It is commonly required for self-employed people.
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