Dates & deadlines

Important accounting dates and deadlines

From self-assessment to corporation tax return deadlines, here is a comprehensive list of important accounting dates and deadlines.

21 January 2021

  • EC sales list (online)

    Online deadline to report the value of goods and services supplied to VAT-registered businesses in EU member states.

  • Intrastat

    Due date for payment of supplementary declarations for December 2020.

22 January 2021

  • Employers’ monthly PAYE (online)

    Monthly deadline for electronic payments of PAYE, Class 1 NICs and student loan deductions from December 2020.

  • Employers’ quarterly PAYE (online)

    Quarterly deadline for electronic payments of PAYE, Class 1 NICs and student loan deductions from Q3 2020/21.

  • CIS return (online)

    Monthly CIS deadline for online returns following the last month.

31 January 2021

  • Balancing payment

    Midnight deadline to pay any outstanding tax you owe from 2018/19.

  • First payment on account

    Midnight deadline to pay half of any tax owed for 2019/20. Because of COVID-19, it’s possible to defer this until 31 January 2022.

  • Corporation tax return

    Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 January 2020.

  • Company accounts filing deadline

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

  • Personal tax returns (online)

    Midnight deadline to submit online tax returns for 2019/20 through self-assessment.

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