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.
2018-09-30
Corporation tax return
Filing deadline for corporation tax return self-assessment form CT600 for period ended 30 September 2017 to be submitted to HMRC.
2018-09-30
Disclosing undeclared offshore tax liabilities
Deadline for disclosing undeclared offshore tax liabilities (relating to income tax, capital gains tax or inheritance tax for the relevant periods) to HMRC is on or before 30 September 2018.
2018-09-30
CT61
End of CT61 quarterly period.
2018-09-30
Company accounts filing deadline
Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends.
