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Bank Tax Residency: Preparing Your CRS Self-Certification

By Gustavo Scriffignano ·
International Corporate & Banking Consultant

Bank tax residency documents, a globe and the English Bertaggia logo

A bank tax residency form should reflect your actual circumstances, not simply the country where you would prefer to hold an account. For international clients, preparing a clear file can reduce avoidable questions and help advisers identify issues before a declaration is signed.

By Gustavo Scriffignano. Official sources checked on 7 October 2026. This is an operational guide; UK examples are identified separately from OECD guidance and other jurisdictions’ requirements.

What a bank tax residency declaration asks

The OECD explains that domestic law determines tax residence and that a person may have more than one tax residence. For CRS self-certification, all tax residences must be disclosed. A residence permit or citizenship does not automatically establish tax residence or end residence in a previous jurisdiction. The OECD country summaries are preliminary guidance, rather than a substitute for analysing the applicable rules. Source: OECD tax residency portal.

In practice, separate three questions: where you can live, where you are resident for tax purposes and where your account is held. Do not copy a mailing address into every field without checking what the bank is asking. A move abroad may require an assessment of more than one tax year.

A UK example: information and reporting

HMRC’s account-holder guidance explains that UK providers ask about tax residence and relevant tax identification numbers. For entity accounts, they also ask about the entity’s type and may request information about controlling persons or trust beneficiaries. Where applicable, information passes to HMRC and then to the relevant foreign tax authority. Clients should verify that a request is genuine and provide correct, complete information. Source: HMRC account-holder guidance.

A foreign account should therefore be planned as part of a transparent financial arrangement. Do not assume that opening abroad makes the account invisible to the tax authority in your country of residence. Equally, a bank reporting process does not replace the separate advice you may need about your own tax returns.

Why the 2026 UK guidance matters

HMRC manual IEIM402015 states that, from 1 January 2026, individuals and entities self-certifying tax residence must declare all jurisdictions of tax residence and cannot use treaty tie-breakers to narrow that declaration. It also says institutions need not revisit pre-2026 accounts solely to investigate reliance on a tie-breaker unless circumstances later change. This is UK reporting guidance; implementation elsewhere must be checked locally. Source: HMRC IEIM402015.

If earlier advice addressed treaty residence, ask whether it also answers the current bank form. Keep the questions distinct and obtain clarification before signing. This practical step is especially useful when your home, business management or personal ties span several countries.

Company accounts need a separate classification

The OECD’s illustrative entity form distinguishes financial institutions from other entity classifications. It requests controlling-person information for passive non-financial entities and certain investment entities. It also addresses updates when circumstances make a declaration incomplete or incorrect. The template is illustrative and must be adapted to local requirements and the institution’s procedures. Source: OECD illustrative entity self-certification.

Do not select an entity category just because its name sounds closest to your business. Ask the relevant professional to explain the classification and keep the supporting analysis. Our guide to beneficial ownership for company banking helps organise the ownership file alongside the bank’s other requests.

A practical bank tax residency checklist

  • Confirm the request: use a known bank contact or authenticated banking channel.
  • Identify the account holder: distinguish an individual, a company and a person signing for someone else.
  • Map the countries: prepare a dated account of residence, relocation and business management.
  • Check identifiers: reconcile names and tax numbers with reliable documents; do not invent missing numbers.
  • Resolve inconsistencies: explain differences between current records and earlier declarations.
  • Keep a copy: retain the submitted form, supporting advice and acknowledgement, and review the bank’s update procedure.

This is a preparation framework, not a universal statutory document list. Ask for a secure channel before sharing identity documents or tax records. A well-organised file supports the process but cannot guarantee acceptance or a particular reporting outcome.

How Studio Bertaggia can assist

Subject to an agreed engagement, the Studio can help organise the banking file, identify missing information and coordinate questions with the relevant professionals. The aim is to connect the client’s factual history, the bank’s form and the advice needed to complete it accurately.

Gustavo Scriffignano supports banking and operational preparation. Avv. Daniele Bertaggia, founder and head of the Studio, leads legal coordination; Justyna Pisyak coordinates the secretariat. Questions about residence or treaty treatment should receive the appropriate jurisdiction-specific legal and tax assessment.

Explore our foreign bank account services and international taxation assistance. For an initial discussion, describe the account holder, the countries involved and the bank’s deadline without sending confidential documents in the first message.

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