Once you’ve registered for Self Assessment, the deadlines for paying your tax bill are:
- 31 January - for any tax you owe for the previous tax year (known as a balancing payment) and your first payment on account
- 31 July for your second payment on account.
'Payments on account' are advance payments towards your tax bill (including Class 4 National Insurance if you’re self-employed).
If you prefer to pay regularly throughout the year, you can use a budget payment plan .
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