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Published

8 July 2026

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News

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Is Your HMRC Letter Genuine? A Guide for UK Taxpayers

Receiving a letter from HMRC can be a source of anxiety, especially with the rise of scams targeting taxpayers. It’s crucial to determine whether the correspondence you’ve received is legitimate. This article outlines how to verify the authenticity of HMRC letters and highlights key communications you should be aware of.

HMRC regularly sends out letters regarding various tax matters, including Self Assessment registration, National Insurance contributions, and more. Understanding the context and content of these letters can help you avoid falling victim to scams. Here’s what you need to know.

Key HMRC Letters to Recognise

Here are some common letters you might receive from HMRC, along with their purposes:

  • Self Assessment Registration — Unpaid Tax on Income: From 6 July 2026 to 31 August 2026, HMRC may automatically register you for Self Assessment if you owe tax on income from online sales, social media platforms, or card transactions. The letter will detail how to report unpaid tax and update your Self Assessment record.
  • Letter CA2490 — Home Responsibilities Protection Eligibility: This letter informs you if you may be missing Home Responsibilities Protection, which can affect your State Pension. It’s essential to check your eligibility to ensure you receive the correct amount.
  • Letter CA4361 — National Insurance Contributions: This letter outlines your National Insurance contributions and their implications for your State Pension.
  • Letter CTF21M — Child Trust Fund: This communication relates to your Child Trust Fund and any actions you may need to take.
  • Letter IDMS99 — Amount Overdue: This letter notifies you of any overdue amounts owed to HMRC.
  • Letter OCA300 — Repayment of Student Loan Deductions: This letter details any repayments due for student loan deductions.
  • Letter VPCF1 — Decision to Cancel Your VAT Registration: This letter informs you of HMRC’s decision regarding your VAT registration status.

What to Do If Your Letter Is Not Listed

If you receive a letter from HMRC that is not mentioned above, you can take the following steps:

  • Check HMRC’s official contact methods to verify the letter’s authenticity.
  • Look for a QR code on the letter and verify it through HMRC’s official channels.
  • Report any suspicious phone calls, emails, or texts to HMRC.

Why This Matters for UK Taxpayers

Understanding the legitimacy of HMRC communications is vital for all UK taxpayers. Scams can lead to financial loss and identity theft, making it essential to stay informed about the types of correspondence HMRC sends. By recognising genuine letters and knowing how to respond, you can protect yourself and ensure compliance with tax obligations.

Summary

In conclusion, being able to identify genuine letters from HMRC is crucial for safeguarding your financial well-being. Familiarise yourself with the common types of correspondence and take proactive steps to verify any suspicious communications. Stay informed with the latest UK tax, accounting, payroll, VAT, HMRC, Companies House, and business news from NPUS.

Need Professional Advice?

If you are interested to learn more, feel free to contact us on the below to ensure you are complying today.

Telephone: 0203 4688 788

 ​

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Home / News / Check if a letter you’ve received…

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Check if a letter you’ve received from HMRC is genuine

8 July 2026 · News

Is Your HMRC Letter Genuine? A Guide for UK Taxpayers

Receiving a letter from HMRC can be a source of anxiety, especially with the rise of scams targeting taxpayers. It’s crucial to determine whether the correspondence you’ve received is legitimate. This article outlines how to verify the authenticity of HMRC letters and highlights key communications you should be aware of.

HMRC regularly sends out letters regarding various tax matters, including Self Assessment registration, National Insurance contributions, and more. Understanding the context and content of these letters can help you avoid falling victim to scams. Here’s what you need to know.

Key HMRC Letters to Recognise

Here are some common letters you might receive from HMRC, along with their purposes:

  • Self Assessment Registration — Unpaid Tax on Income: From 6 July 2026 to 31 August 2026, HMRC may automatically register you for Self Assessment if you owe tax on income from online sales, social media platforms, or card transactions. The letter will detail how to report unpaid tax and update your Self Assessment record.
  • Letter CA2490 — Home Responsibilities Protection Eligibility: This letter informs you if you may be missing Home Responsibilities Protection, which can affect your State Pension. It’s essential to check your eligibility to ensure you receive the correct amount.
  • Letter CA4361 — National Insurance Contributions: This letter outlines your National Insurance contributions and their implications for your State Pension.
  • Letter CTF21M — Child Trust Fund: This communication relates to your Child Trust Fund and any actions you may need to take.
  • Letter IDMS99 — Amount Overdue: This letter notifies you of any overdue amounts owed to HMRC.
  • Letter OCA300 — Repayment of Student Loan Deductions: This letter details any repayments due for student loan deductions.
  • Letter VPCF1 — Decision to Cancel Your VAT Registration: This letter informs you of HMRC’s decision regarding your VAT registration status.

What to Do If Your Letter Is Not Listed

If you receive a letter from HMRC that is not mentioned above, you can take the following steps:

  • Check HMRC’s official contact methods to verify the letter’s authenticity.
  • Look for a QR code on the letter and verify it through HMRC’s official channels.
  • Report any suspicious phone calls, emails, or texts to HMRC.

Why This Matters for UK Taxpayers

Understanding the legitimacy of HMRC communications is vital for all UK taxpayers. Scams can lead to financial loss and identity theft, making it essential to stay informed about the types of correspondence HMRC sends. By recognising genuine letters and knowing how to respond, you can protect yourself and ensure compliance with tax obligations.

Summary

In conclusion, being able to identify genuine letters from HMRC is crucial for safeguarding your financial well-being. Familiarise yourself with the common types of correspondence and take proactive steps to verify any suspicious communications. Stay informed with the latest UK tax, accounting, payroll, VAT, HMRC, Companies House, and business news from NPUS.

Need Professional Advice?

If you are interested to learn more, feel free to contact us on the below to ensure you are complying today.

Telephone: 0203 4688 788

 ​

Get in touch

Contact NP & US

Reach out to us for assistance

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