Digital Nomad
What Digital Nomads Should Know: Tax Advice Registration & HMRC Assistant Powers
With new rules forcing all paid tax advisers to register from May 2026 and strengthened powers to sanction misconduct, digital nomads relying on overseas advisers must tread carefully.
By NomadicTax Research Team • 5-8 min read • May 16, 2026
## New Tax Adviser Registration Requirements (MMTAR)
- From **18 May 2026**, anyone who is paid to interact with HM Revenue and Customs on behalf of clients (i.e., giving tax advice) must register under the **Modernising and Mandating Tax Adviser Registration (MMTAR)** system. ([gov.uk](https://www.gov.uk/government/news/tax-advisers-check-if-you-need-to-register-under-new-rules?utm_source=openai))
- Roll-out is phased through **March 2027**, depending on the adviser’s existing agent status:
* 18 May-18 August 2026 – new advisers / those without Agent Services Account (ASA) or Self Assessment or Corporation Tax accounts.
* 18 August-18 November 2026 – those with SA or CT accounts but no ASA.
* 18 November 2026-18 February 2027 – payroll-only advisers.
* 31 Dec 2026-31 March 2027 – existing ASA holders and financial services organisations. ([gov.uk](https://www.gov.uk/government/news/tax-advisers-check-if-you-need-to-register-under-new-rules?utm_source=openai))
## HMRC's Enhanced Powers & Sanctionable Conduct
- From **1 April 2026**, HMRC has new authority against tax advisers who facilitate client non-compliance, including helping clients evade or avoid tax. ([gov.uk](https://www.gov.uk/government/publications/agent-update-issue-142/issue-142-of-agent-update?utm_source=openai))
- These powers cover investigations, potential penalties, and publication of misconduct. Advisors should ensure compliance, maintain proper records and avoid schemes designed to sidestep tax. ([gov.uk](https://www.gov.uk/government/publications/agent-update-issue-142/issue-142-of-agent-update?utm_source=openai))
## What to Look for If You’re a Digital Nomad Choosing a UK Adviser
- Check whether the adviser is **registered under MMTAR** and holds a valid **Agent Services Account (ASA)**.
- Seek transparency about the adviser’s compliance with UK tax law—particularly for cross-border advice.
- Get all tax advice in writing; keep copies of all communications.
- Understand whether their advice involves UK tax schemes—know what registers, disclosures or compliance they are subject to.
## Actionable Steps for Digital Nomads
- If using an adviser in another country, verify their UK registration status.
- Review past advisers’ work: if you relied on advice from unregistered agents, those may now carry risk.
- Be aware: non-registered advisers cannot legally interact with HMRC on your behalf—this could affect your tax affairs.
- Ensure all submissions, appeals, or contacts with HMRC are handled via registered advisers or by yourself to avoid invalid or unprotected advice.
## Example Scenario
Maria, a remote worker for a US-based company but resident in the UK part of the year, engaged a tax adviser from her home country who helped file her UK Self Assessment. As of **18 May 2026**, that adviser must register under MMTR if still acting on her behalf. If not, Maria risks compliance problems or even invalid filings.
Likewise, advisers themselves—especially overseas ones—must align with new rules or face sanctions. These developments make registration and transparency essential for both sides.