Changing Your Address with HMRC: A Practitioner’s 2026/27 Guide

For tax practitioners, ensuring clients promptly handle changing your address with HMRC represents a critical compliance safeguard. Statute heavily favours HMRC when it comes to the service of legal documents and penalty notices. Under section 84 of the Finance Act 2003 (FA 2003) and section 7 of the Interpretation Act 1978, HMRC validly serves a notice or document if they send it by post to an individual’s “usual or last known place of abode” or a company’s “principal place of business”.

This statutory presumption carries severe consequences for taxpayers who fail to update their details. The First-tier Tribunal firmly established in Hana Services Limited v The Commissioners for HMRC that HMRC legally serves notices even if the taxpayer never physically receives them, provided HMRC posts the documents to the last address held on their official records.

“We would point out to the appellant that the notices can be validly served even if they do not come to the actual attention of the appellant. Provided HMRC can establish that they were served on the correct business premises, then that is enough even if the appellant was not actually aware of them.”

Furthermore, the tribunals consistently reject arguments that non-receipt of correspondence due to an outdated address constitutes a valid defence. In TC 01551, the First-tier Tribunal ruled that failing to notify HMRC of an address change prevents a taxpayer from claiming a “reasonable excuse” for late filing, as the fundamental burden of maintaining current contact details rests entirely on the taxpayer.  Similarly, in Patricia Mbomi v The Commissioners for HMRC, the tribunal upheld penalties because HMRC correctly issued them to the notified address on file at that specific time.

Finance Act 2026: The New Digital Contact Penalty Regime

The Finance Act 2026 (FA 2026) significantly expands HMRC’s powers regarding contact information, moving beyond physical postal addresses. Section 261 of FA 2026 grants HMRC the statutory authority to demand “digital contact details” from anyone using their online services.  The legislation defines digital contact details as an email address, mobile telephone number, or any other detail used for digital communication.

Section 261 imposes strict active obligations on the taxpayer to maintain these records. Taxpayers must proactively inform HMRC if they cease using a specified digital contact detail and immediately provide an alternative.

Parliament has armed HMRC with robust enforcement mechanisms to ensure compliance with this new regime:

• HMRC can issue a financial penalty of up to £1,000 against a person who fails to provide or update their digital contact details.
• HMRC can make the provision and maintenance of these details a strict condition for accessing and using HMRC online services.

Making Tax Digital (MTD) for Income Tax Updates

The 2026/27 tax year brings Making Tax Digital (MTD) for Income Tax into force for many sole traders and landlords. Under this regime, taxpayers or their agents must use their HMRC online services account or agent services account to report changes in their circumstances.

If a taxpayer ceases a self-employment or property income source, they must enter the exact date the business or property income ended into the digital system.  Taxpayers must action this notification by the quarterly update deadline that applies to the specific period in which the business or property income stopped.  Once notified, the taxpayer must complete all outstanding quarterly updates for that specific source from when the income was active, after which HMRC will stop issuing quarterly update reminders for that ceased source.

Regime-Specific Notification Deadlines

Different tax regimes impose strict, distinct statutory deadlines for changing your address with HMRC or updating critical business particulars.

Table: Statutory Notification Time Limits

Consider reviewing the specific appeals procedures under FA 2026 for challenging a £1,000 digital contact penalty where the client lost access to their email account due to a malicious cyber incident.