--- title: Tax Diary August/September 2023 description: Tax Diary August/September 2023 image: https://www.vanilla-accounting.co.uk/hubfs/Vanilla-Accounting-Theme/Images/blog/45fd4227-6b8b-4be0-91af-8ae76cb5a4d6.webp --- [![header-logo](https://www.vanilla-accounting.co.uk/hs-fs/hubfs/Vanilla-Accounting-Theme/Images/logo.webp?width=235&height=47&name=logo.webp "header-logo")](https://www.vanilla-accounting.co.uk/) - [0115 945 2222](tel:0115%20945%202222) - [info@vanilla-accounting.co.uk](mailto:info@vanilla-accounting.co.uk) - [Free Business Finance Review](https://www.vanilla-accounting.co.uk/get-your-free-financial-health-check-report) - Outsourced Accounting Services - [Outsourced Accounting](https://www.vanilla-accounting.co.uk/outsourced-accounting) - [Payroll](https://www.vanilla-accounting.co.uk/payroll-vanilla-accounting) - [Xero Accountants](https://www.vanilla-accounting.co.uk/xero-accountants) - Business Advisory Services - [Business Growth Consultancy](https://www.vanilla-accounting.co.uk/business-growth-consultants) - [Virtual Finance Director](https://www.vanilla-accounting.co.uk/virtual-finance-director) - [Management Accounting](https://www.vanilla-accounting.co.uk/management-accounting) - Compliance Services - [Bookkeeping](https://www.vanilla-accounting.co.uk/bookeeping-accountancy) - [Tax Services](https://www.vanilla-accounting.co.uk/tax-services) - [About Us](https://www.vanilla-accounting.co.uk/about-us) - Resources - [Blog](https://www.vanilla-accounting.co.uk/blog) - [Free Guides](https://www.vanilla-accounting.co.uk/central-resources) - [Case Studies](https://www.vanilla-accounting.co.uk/blog/tag/case-studies) - [Portal](https://portal.vanilla-accounting.co.uk/signin) - [Contact Us](https://www.vanilla-accounting.co.uk/contact-us) # Blog ![Tax Diary August/September 2023 ](https://www.vanilla-accounting.co.uk/hubfs/Vanilla-Accounting-Theme/Images/blog/45fd4227-6b8b-4be0-91af-8ae76cb5a4d6.webp) ## Tax Diary August/September 2023 13th July 2023 1 August 2023 - Due date for corporation tax due for the year ended 31 October 2022. 19 August 2023 - PAYE and NIC deductions due for month ended 5 August 2023. (If you pay your tax electronically the due date is 22 August 2023) 19 August 2023 - Filing deadline for the CIS300 monthly return for the month ended 5 August 2023.  19 August 2023 - CIS tax deducted for the month ended 5 August 2023 is payable by today. 1 September 2023 - Due date for corporation tax due for the year ended 30 November 2022. 19 September 2023 - PAYE and NIC deductions due for month ended 5 September 2023. (If you pay your tax electronically the due date is 22 September 2023) 19 September 2023 - Filing deadline for the CIS300 monthly return for the month ended 5 September 2023.  19 September 2023 - CIS tax deducted for the month ended 5 September 2023 is payable by today. 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