31 January 2019 deadline

The   deadline    for    filing   self-assessment  tax returns  online  for 2017/18 and for paying any remaining tax for 2017/18 is 31 January 2019.
The deadline also applies for the self-employed to pay their Class 2 and the balance of any Class 4 National Insurance contributions due for 2017/18.

The first payment on account of the 2018/19 liability is also due by 31 January 2019.

Penalties    are    charged    where returns are filed late and tax paid late. Interest is also charged on late payments.

Comment: HMRC produce a tool which can be used by an individual to check whether they need to submit a self-assessment tax return. The tool is available on the Gov.uk website at


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