HMRC to End Corporation Tax Reminder Letters from June 2025

From June 2025, HMRC will no longer issue paper reminder letters to businesses for corporation tax obligations. This includes reminders for payment instalments, return submissions, and interest statements. Instead, companies and their agents will need to access this information via their HMRC online accounts.

What Is Changing?

The move will affect the following reminder letters:

  • CT208 PR1 – Payment reminder

  • CT208 PR2 – Return and payment reminder

This follows a five-month pilot trial held between September 2024 and January 2025, during which HMRC monitored the impact of reduced postal correspondence. Having concluded that the shift did not negatively affect compliance or customer experience, HMRC is now making the change permanent.

Accessing Corporation Tax Information Online

Going forward, all businesses must:

  • Log into their HMRC Business Tax Account to view corporation tax liabilities, payments, and deadlines

  • Use HMRC’s Corporation Tax for Agents online service, if they are acting through an accountant or tax agent

HMRC is encouraging a broader “digital-first” approach, reducing reliance on physical mail and aligning with cost-saving and efficiency objectives.

Important Notes for Small Businesses

While the corporation tax process itself remains unchanged, there are a few key updates to be aware of:

  • HMRC’s free online company tax return service will be withdrawn in March 2026, requiring small businesses to switch to commercial software for submissions thereafter.

  • Agents and businesses must ensure they have up-to-date HMRC login credentials and are familiar with using the online platform.

Other Discontinued Letters

This shift follows an earlier decision in September 2024, when HMRC stopped sending several other corporation tax letters, including:

  • CT205/A – Company tax return reminder

  • CT608 – Instalment payment reminder

  • CT207 – Interest statement

  • CT209 – Payment receipt confirmation

  • CT603A – List of issued notices to deliver company tax returns (previously sent to agents)

What This Means for Businesses

With postal reminders being phased out, businesses must take greater responsibility for monitoring their tax deadlines digitally. This makes it crucial to:

  • Check HMRC online accounts regularly

  • Set up internal calendar reminders for key dates

  • Work closely with your accountant or tax adviser to ensure nothing is missed

Final Thoughts

While this may feel like a significant change, it is part of HMRC’s long-term strategy to digitise its services and reduce administrative overhead. By embracing these online systems early, businesses can ensure they remain compliant and avoid any missed deadlines or penalties.

If you require help navigating your HMRC online account, understanding your corporation tax obligations, or selecting the right commercial tax software, feel free to contact Barnett & Co Accountants for expert guidance and support.

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