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2023/24 self-assessment deadline reminders

Dec 16, 2024

Ahead of the 2023/24 online self-assessment (SA) filing deadline of 31 January 2025, HMRC has issued several key reminders. Important guidance on the transition year to basis period reform, and in particular applying to HMRC for information on overlap relief, is also contained in the November Agent Update which sets out that overlap relief applications be submitted as early as possible and preferably by 31 December 2024. We also remind you that 30 December 2024 is the deadline to file 2023/24 SA returns online to ensure that a taxpayer can have their SA bill collected through their PAYE tax code when certain conditions are met.

Simple assessment tax bills

HMRC is reminding taxpayers who have received a simple assessment letter to pay any tax outstanding for 2023/24 by the later of:

  • 31 January 2025, and
  • three months from the date of issue of the letter.

Guidance at the above link also sets out how to pay a simple assessment tax bill, and what action to take if a taxpayer is unable to pay the full amount due by the deadline.

Scams

HMRC is warning that fraudsters are increasingly targeting people with offers of tax refunds, or demanding payment of tax to obtain personal information and banking details. HMRC’s advice to taxpayers is to check if contact is genuine using the guidance on GOV.UK before taking any action.

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