Tax and business calendar

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Details of compliance and regulatory deadlines.

To see expired deadlines, please use the following link: Expired deadlines

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07 Mar 2018

  • VAT return

    Due date for January VAT returns unless exempted.

14 Mar 2018

  • EC sales list

    Deadline for paper monthly or quarterly return filing.

19 Mar 2018

  • Monthly postal PAYE/class 1 NICs/student loan payment

    If you pay by cheque through the post, monthly payments due for PAYE, class 1 NICs and student loan deductions from February 2018.

  • CIS return

    Construction Industry Scheme: monthly return due for period up to 5th of previous month.

  • CIS return

    Construction Industry Scheme: monthly return due for period up to 5th of previous month.

21 Mar 2018

  • Intrastat

    Due date for payment of supplementary declarations for February 2018.

  • EC sales list

    Deadline for online monthly or quarterly return filing.

22 Mar 2018

  • Monthly electronic PAYE/class 1 NICs/student loan payment

    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.

31 Mar 2018

  • Corporation tax return

    Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 March 2017 to be submitted to HMRC.

  • CT61

    End of CT61 quarterly period.

  • Corporation tax

    End of corporation tax financial year.

  • Company accounts filing deadline

    Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends.

  • Disincorporation relief ends

    Government will not extend disincorporation relief beyond the 31 March 2018 expiry date.

01 Apr 2018

  • Corporation tax payment

    Corporation tax payment due for year end 30 June 2017, for those companies not liable to pay their liability by instalments.

  • Measure of business rates changes

    All future business rates are now determined by the Consumer Prices Index measure of inflation.

06 Apr 2018

  • Personal allowance

    Personal allowance increases from £11,500 to £11,850.

  • Junior ISA

    Annual junior ISA limit rises to £4,260.

  • Start of new tax year

    Start of new tax year.

  • Lifetime pension allowance

    Lifetime pension allowance increases to £1.03 million.

  • Capital gains tax allowances

    Capital gains tax annual allowance for individuals increases to £11,700; and to £5,850 for trustees.

Expired deadlines

Details of expired compliance and regulatory deadlines.