Preparing for HMRC’s GOV.UK One Login: What London Landlords Need to Know

What’s Changing and Why It Matters

Starting 9 February 2026, HM Revenue & Customs (HMRC) will introduce the GOV.UK One Login system for new individual customers accessing HMRC digital services. This replaces the older Government Gateway ID login, simplifying access through a single email and password. While existing users keep their current login for now, all will eventually transition to One Login.

For landlords and letting agents, this shift means new accounts created after this date must use GOV.UK One Login to manage tax affairs, including Self Assessment, property income declarations, and compliance submissions.

Practical Implications for Different Landlord Profiles

• New Landlords and Letting Agents: If you’re registering for HMRC digital services for the first time after 9 February 2026, you must sign up via GOV.UK One Login. This streamlines your access not only to HMRC but also potentially other government services.

• Existing Landlords (Single-Unit and Portfolio Owners): Continue using your Government Gateway credentials until HMRC advises switching. Keep an eye on official communications for transition dates.

• Accidental Landlords and HMO Operators: The login change does not affect your current account access immediately, but plan for eventual migration. HMRC will provide detailed guidance when your account is due for change.

What You Should Do Now

1. Inform Your Team: Ensure anyone responsible for tax filings or HMRC interactions understands the upcoming login change and uses the correct system when creating new accounts.

2. Monitor HMRC Updates: HMRC will communicate transition timelines and support resources. Bookmark official HMRC Property & Landlord Tax pages and subscribe to updates.

3. Plan Account Registrations: New landlords or agents registering after February 2026 should use GOV.UK One Login from the outset to avoid delays.

4. Prepare for Migration: When HMRC notifies existing users about switching to One Login, follow instructions carefully. Consider scheduling a compliance review to ensure all tax records and submissions are current.

5. Seek Support if Needed: Contact the Government Digital Service support team promptly with any login issues to prevent filing delays.

Why This Change Matters for Your Business Operations

GOV.UK One Login simplifies digital interactions across government agencies using a single, secure login. For landlords managing multiple properties or teams, this reduces password fatigue and boosts security.

However, it requires timely attention to avoid access issues that could delay tax filings and risk penalties.

Next Steps with Rentals & Sales

Rentals & Sales is here to help you navigate this change smoothly. We offer:

• Portfolio Reviews: Ensure your property tax status and digital accounts are current ahead of login migrations.
• Compliance Audits: Verify HMRC filings align with new digital requirements.
• Staff Training: Equip your team to manage GOV.UK One Login registrations effectively.
• Pricing Strategy Advice: Maintain profitability while handling the administrative load of digital transitions.

Contact us to schedule a consultation and safeguard your landlord operations against digital disruptions.

Compliance Disclaimer: This article is for informational purposes only and does not constitute legal or tax advice. Please consult qualified professionals for advice specific to your circumstances.