Key Dates for your Diary – September 2023

The key financial accounting dates for your diary for September 2023 – deadlines to consider
Accounting deadlines for your business

Key Dates for your Diary – September 2023

14/ 09 Due date for Corporation Tax quarterly instalment for large companies with year-end 31st March 2023

19/ 09 Monthly deadline for postal payments of CIS, NICs and PAYE to HMRC

22/ 09 Monthly deadline for electronic remittance of CIS, NICs and PAYE to HMRC

30/ 09 CT61 Quarterly Period ends

30/ 09 Corporation Tax Returns filed by companies with 31st December 2022 as year-end


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