Switch Your Money On
Switch Your Money On
Hargreaves Lansdown
HMRC Self-Assessment: Tax return deadlines, penalties and fixes
15 minutes Posted Jan 29, 2026 at 8:00 am.
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Show notes

Sarah Coles and Helen Morrissey explain HMRC self-assessment, including the self-assessment tax return deadline, late filing penalties, common mistakes, what to do after the deadline passes and how to amend a return. They cover who needs to file, pension tax relief, capital gains, child benefit charges and what to do if you miss the deadline.


This podcast isn’t personal advice. If you’re unsure what’s right for you, seek financial advice. Tax and pension rules can change, and benefits depend on personal circumstances. Investments can fall as well as rise in value, so you could get back less than you invest.


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