Deadlines for submitting Financial Information 

January Accountancy Deadlines 2023 

 
7 January 2023 - VAT returns and payments due for Accounting Quarter period ending 30 November. 
22 January 2023 - Deadline for electronic remittance of PAYE, NICs and CIS to HMRC. 
31 January 2023 - Deadline for paying Self-Assessment balancing payment and capital gains tax for tax year ended 5 April 2022. 
31 January 2023- Deadline for the first payment on Self-Assessment account for 2022/23. 
31 January 2023 - Final online deadline for Self-Assessment tax return. 
31 January 2023 - Deadline for filing of accounts with Companies House for accounting periods ended 30 April 2022. 
31 January 2023 - Corporation Tax returns due for accounting periods ended 31 January 2022. 
31 January 2023 - Deadline for overseas entities, who own, want to buy, sell or transfer property or land in the UK, to register with Companies House. 
 

February Accountancy Deadlines 2023 

 
2 February 2023 - Forms P46(Car) for the quarter ended 5 January (where benefits are not payrolled) to reach HMRC. 
7 February 2023 - VAT returns and payments due for Accounting Quarter period ending 31 December. 
22 February 2023 - Deadline for electronic remittance of PAYE, NICs and CIS to HMRC. 
28 February 2023 - Deadline for filing of accounts with Companies House for accounting periods ended 31 May 2022. 
28 February 2023 - Corporation Tax returns due for accounting periods ended 28 February 2022. 
 
 

March Accountancy Deadlines 2023 

 
1 March 2023 - New Advisory Fuel Rates (AFR) applies for company car users. 
7 March 2023 - VAT returns and payments due for Accounting Quarter period ending 31 January. 
15 March 2023 - Chancellor to deliver Spring Statement. 
22 March 2023- Deadline for electronic remittance of PAYE, NICs and CIS to HMRC. 
31 March 2023 - Deadline for filing of accounts with Companies House for accounting periods ended 30 June 2022. 
31 March 2023 - The Annual Investment Allowance will no longer be reduced from this date and will remain permanently fixed at £1 million. 
31 March 2023 - The temporary Energy Bill Relief Scheme for businesses and the Energy Price Guarantee for Households is due to end at midnight. 
31 March 2023 - Corporation Tax returns due for accounting periods ended 31 March 2022. 
 
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