You’ll get a penalty if you need to send a tax return and you miss the deadline for submitting it or paying your bill.
You’ll get a penalty of £100 if your tax return is up to 3 months late. You’ll have to pay more if it’s later, or if you pay your tax bill late.
Estimate your penalty for Self Assessment tax returns more than 3 months late, and late payments.
You can appeal against a penalty if you have a reasonable excuse.
Last updated: 30 January 2015
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