Tax and Business Calendar

Construction Industry Scheme: monthly return due for period up to 5th of previous month. If you pay by cheque through the post, pay PAYE, class 1 NICs, student loan deductions and deductions from payments to subcontractors for the month up to the 5th of this month. If paying electronically, pay PAYE, class 1 NICs, student loan deductions and deductions from payments to subcontractors for the month up to the 5th of this month. Deadline for online submission of self-assessment tax returns for tax year ended 5 April 2023 for HMRC to collect tax through PAYE codes, where they owe less than £3,000. Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 December 2022 to be submitted to HMRC. Deadline for filing your annual accounts is 9 months after your company’s financial year ends. End of CT61 quarterly period.19 December 2023
CIS return
Monthly postal PAYE/class 1 NICs/student loan payment
22 December 2023
Monthly electronic PAYE/class 1 NICs/student loan payment
30 December 2023
Online self-assessment (PAYE)
31 December 2023
Corporation tax return
Company accounts filing deadline
CT61
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