Dates & deadlines
31 January 2019
Corporation tax return
Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 January 2018 to be submitted to HMRC.
Self-assessment deadline (payment on account)
Deadline for first self-assessment payment on account for tax year ended 5 April 2018.
Self-assessment deadline (balancing payments)
Deadline for online submission of self-assessment balancing payments for 2017/18 tax year.
Self-assessment deadline (online)
Deadline for online submission of self-assessment tax return for 2017/18 tax year.
Company accounts filing deadline
Deadline for filing your company tax return is 12 months after your accounting period for corporation tax ends.
01 February 2019
Corporation tax payment
Corporation tax payment due for year end 30 April 2018, for those companies not liable to pay their liability by instalments.
07 February 2019
Due date for December VAT returns unless exempted.
14 February 2019
EC sales list
Deadline for paper monthly or quarterly return filing.
19 February 2019
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 January 2019.
Construction Industry Scheme: monthly return due for period up to 5th of previous month.