CT61 payment
Due date for income tax for the CT61 quarter to 30 September 2023.
VAT return
Due date for August VAT returns unless exempted.
Income tax and capital gains
Taxpayers who do not receive a self-assessment tax return to complete must notify HMRC by 5 October if they had income or capital gains in the previous tax year on which further tax is due.
Corporation tax payment
Corporation tax payment due for year end 31 December 2022, for those companies not liable to pay their liability by instalments.
CT61
End of CT61 quarterly period.