September and October Tax Deadlines

Date	What’s Due
1 September	Corporation tax for year to 30/11/23 unless pay by quarterly instalments
19 September	PAYE & NIC deductions, and CIS return and tax, for month to 5/9/24 (due 22 September if you pay electronically)
1 October	Corporation tax for year to 31/12/23 unless pay by quarterly instalments
5 October	Deadline for notifying HMRC of chargeability for 2023/24 if you are not within Self-Assessment and receive income or gains on which tax is due
19 October	PAYE & NIC deductions, and CIS return and tax, for month to 5/10/24 (due 22 October if you pay electronically)