Self Assessment Hub
Everything you need to file Self Assessment confidently. Deadlines, what documents you need, how payments work, and what to do if you are late.
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Basics
What Self Assessment is, who needs to file, and what counts as taxable income.
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Deadlines
Key dates for registration, filing, and payment. Do not miss these.
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Payments
How to pay HMRC, payment on account, and what happens if you pay late.
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Penalties
Late filing and late payment penalties explained. What to do if you miss a deadline.
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Documents
Everything you need to gather before you file, organised by income type.
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