Self-assessment deadline (balancing payments)
Deadline for online submission of self-assessment balancing payments for 2017/18 tax year.
Self-assessment deadline (payment on account)
Deadline for first self-assessment payment on account for tax year ended 5 April 2018.
Advisory fuel rates
New fuel rates come into force.
Online self-assessment (PAYE)
Deadline for online submission of self-assessment tax returns for tax year ended 5 April 2018 for HMRC to collect tax through PAYE codes, where they owe less than £3,000.
Paper deadline for self-assessment
Deadline for paper submission of self-assessment tax return for tax year ended 5 April 2018.