PSA Filing Deadline – 31 July
Deadline for most PAYE Settlement Agreements to be filed with HMRC.
Self-Assessment PAYE Collection Deadline: 30 December
Last chance for self-assessment taxpayers to opt for tax to be collected via PAYE for tax owed under £3,000.
Paper Tax Return Deadline: 31 October
Deadline to file your 2025/26 self-assessment tax return if filing by paper.
PAYE Settlement Agreement (PSA): 22 October
Pay tax and Class 1B National Insurance (or by 19 October if paying by cheque).
Self-Assessment Registration Deadline: 5 October
Notify HMRC if you’re required to file a self-assessment tax return (including first-time filers).