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January Key Dates

Newsletter issue – January 2026

1st

  • Corporation Tax payments are due for companies with a year-end of 31st March

19th

  • For employers operating PAYE, this is the deadline to send an Employer Payment Summary (EPS) to claim any reduction on what you'll owe HMRC.
  • It is also the deadline for employers operating PAYE to pay HMRC by post, for December.

22nd

  • Deadline for employers operating PAYE to pay HMRC electronically, for December.

31st

  • Corporation Tax Returns (CT600 form) are due for companies with a year-end of 31st January.
  • It is also the deadline to submit your online self-assessment tax return (if you are required to do one) for the tax year ended 5th April 2025, and to pay HMRC any tax owed.

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