Self Assessment
Self Assessment Deadlines
Key dates for filing and payment. Missing these can mean automatic penalties, so plan ahead.
Late filing penalties
How late filing penalties build up: the £100 immediate fine, daily penalties, and 6 and 12 month escalations.
5 min read
Payment on account explained
Two advance payments towards next year's bill, due 31 January and 31 July. When they apply and how they work.
4 min read
31 January deadline explained
The most important date in the Self Assessment calendar. What you need to submit, when to pay, and what happens if you miss it.
4 min read