CRS Reporting and Your Bank Accounts: What Expats Need to Know

For most of the twentieth century, keeping money in an overseas bank account was, for practical purposes, a private matter. Tax authorities in your home country had limited ability to know what you held abroad, and the burden of disclosure rested almost entirely on the individual. That era is over.

The Common Reporting Standard (CRS) — implemented by over 100 countries since 2017 — means that your bank in the Isle of Man, Singapore, Switzerland, or the UAE is now legally required to report details of your account to the tax authority in your country of tax residence, usually annually. HMRC receives this data automatically. If you have overseas accounts with undeclared income or balances, the probability that HMRC either already knows or will soon know is very high.

This guide explains how CRS works, what is reported, how it affects expats with legitimate multi-country banking, and what to do if you have historical non-compliance to address.

What CRS Is

The Common Reporting Standard was developed by the OECD (Organisation for Economic Co-operation and Development) and formally adopted in 2014. It builds on the experience of the US FATCA system and creates a global reciprocal framework for automatic exchange of financial account information.

The key word is automatic. Under previous information exchange arrangements, tax authorities could request information about a specific account from a foreign jurisdiction if they had reason to suspect something. Under CRS, the information exchange happens routinely, without any suspicion or request, for all account holders in scope.

CRS is implemented through domestic legislation in each participating jurisdiction. Financial institutions (banks, brokers, custodians, certain insurance companies, investment funds, and platforms like Wise and Revolut) are required to:

1. Identify account holders and beneficial owners
2. Determine their country or countries of tax residence
3. Report account information annually to the local tax authority
4. The local authority then forwards the data to the relevant foreign tax authority

What Information Is Reported

For each reportable account, the following is exchanged:

• Account holder's name, address, and date of birth
• Tax Identification Number (TIN) in the account holder's country of tax residence
• Account number
• Account balance or value at year end
• Income credited to the account during the year: interest, dividends, gross proceeds from asset sales
• Financial institution's name and identifying number

For a typical bank account, the exchange covers the balance at 31 December and all interest credited during the year. For brokerage accounts, it covers dividends, interest, and the gross proceeds of any securities sold during the year (the acquisition cost is not reported — HMRC cannot automatically calculate your gains, but it knows you had proceeds).

Which Jurisdictions Participate

As of 2026, more than 100 jurisdictions participate in CRS, including:

• All EU member states
• Channel Islands (Jersey, Guernsey) and Isle of Man
• Cayman Islands, British Virgin Islands, Bermuda, and other British Overseas Territories
• Switzerland (since 2018)
• Singapore, Hong Kong, and most of the Asia-Pacific region
• United Arab Emirates, Qatar, Bahrain, Saudi Arabia
• Australia, New Zealand, Canada
• Many Caribbean and Pacific jurisdictions

Not participating: The United States uses FATCA instead (see below). A small number of jurisdictions remain outside CRS — but the list is shrinking and the OECD applies significant diplomatic pressure.

FATCA: The US Parallel

The US Foreign Account Tax Compliance Act (FATCA) pre-dates CRS and operates on a similar principle: foreign financial institutions must report information about accounts held by US persons (US citizens and permanent residents, regardless of where they live) to the IRS. Failure to comply results in a 30% withholding tax on US-source payments.

FATCA flows primarily one way — to the IRS — though the US does provide some reciprocal information exchange. For British expats who are also US persons (dual citizens, or those with US green cards), FATCA means their UK bank accounts are reported to the IRS annually, and they must file US tax returns even if living in the UK.

What It Means for Legitimate Multi-Country Banking

For expats with multiple accounts across multiple countries, CRS has several practical implications:

HMRC receives information on all your overseas accounts: Your UAE current account, your Isle of Man savings account, your Singapore brokerage account — all are reported to HMRC if you are UK tax resident or have been recently.

You must declare all overseas income on your UK self-assessment: Interest earned on an overseas account is taxable UK income if you are UK tax resident (subject to any double tax treaty). If you have been receiving interest on an overseas savings account and not declaring it, CRS data makes this discoverable.

Bank balances at year end are visible to HMRC: Even if you earned no income in an overseas account, HMRC can see the balance. Large balances not reflected in declared income may trigger an enquiry.

The residence question matters enormously: CRS reporting is triggered by tax residence, not citizenship or nationality. If you leave the UK and become genuinely tax resident elsewhere, you will no longer be reported to HMRC (though you will be reported to the tax authority of your new country of residence). The UK has specific rules on when you cease to be UK tax resident — the Statutory Residence Test — and these should be fully understood before assuming you are outside HMRC's CRS reach.

Non-domicile status does not protect you: UK resident non-domiciles (non-doms) who used the remittance basis could previously claim that overseas income not remitted to the UK was not taxable. However, overseas account information is still exchanged under CRS regardless of remittance basis status, and the non-dom rules have changed significantly since the 2025 Budget — specialist advice is essential.

HMRC's Connect System

HMRC uses a sophisticated data analytics system called Connect, which processes CRS data alongside PAYE records, Companies House filings, land registry data, and other sources. Connect identifies discrepancies between declared income and what third parties (including foreign banks via CRS) have reported.

The practical result: HMRC no longer needs to conduct a specific investigation to notice that a taxpayer with a declared income of £60,000 has a £500,000 savings account in Jersey. The discrepancy surfaces automatically.

The Worldwide Disclosure Facility

For individuals who have historical non-compliance — undisclosed overseas accounts, undeclared interest or income from overseas sources — HMRC's Worldwide Disclosure Facility (WDF) provides a structured route to voluntary disclosure.

The WDF allows individuals to:

• Disclose previously undeclared overseas income and assets
• Calculate and pay the outstanding tax liability, with interest
• Pay a penalty that reflects the voluntary nature of the disclosure (lower than if HMRC discovered it independently)

Penalties for voluntary disclosure under the WDF vary considerably with the behaviour involved and the tax years in question. For careless or innocent errors outside the Requirement to Correct regime, penalties can be relatively low; but where the Failure to Correct rules apply, the penalty floor is 100% of the unpaid tax even for an unprompted disclosure (and 150% if prompted by HMRC). If HMRC discovers the non-compliance independently (i.e., via CRS data), penalties are higher still — up to 200% of the unpaid tax for "deliberate and concealed" behaviour in the most serious cases. Coming forward voluntarily, before HMRC makes contact, secures the lowest penalty available for your circumstances.

The calculation is straightforward: voluntary disclosure through WDF is substantially cheaper than being discovered. If you have any historic non-compliance, acting now — before HMRC raises an enquiry — is strongly advisable.

CRS and Digital Financial Institutions

Wise, Revolut, and similar fintech platforms are regulated financial institutions and are CRS-compliant. If you hold a Wise account with a significant balance or receive interest or investment income through the platform, this is reported in the same way as a traditional bank account.

This is a common misconception: some individuals assumed that digital accounts or e-money accounts were not captured by CRS. They are. The CRS definition of a "financial account" is broad and encompasses accounts held with any regulated financial institution.

Common Scenarios

British expat in UAE with UAE bank account: If you are no longer UK tax resident (having satisfied the Statutory Residence Test), the UAE bank will report your account to the UAE's tax authority. Since the UAE currently has no personal income tax, and has limited tax information exchange obligations under CRS for non-UAE-sourced income, the practical impact is limited — but verify current UAE-UK CRS exchange arrangements.

British expat in Spain with IoM savings account: If you remain UK tax resident (the Statutory Residence Test determines this — for example, a recent leaver who spends 16 or more days in the UK in a tax year may fail the automatic-overseas test and remain resident), the Isle of Man bank reports to the IOM tax authority, which exchanges with HMRC. If you become Spanish tax resident instead, the data flows to the Agencia Tributaria.

UK resident with undeclared Swiss savings account: Swiss banks have been fully CRS-reporting since 2018. HMRC almost certainly has this data. If the account has earned interest that has not been declared, specialist advice is urgently required.

Compliance and Important Caveats

This guide provides an overview of CRS mechanics as they commonly apply to UK-connected expats. It is not legal or tax advice. Tax residence rules, treaty provisions, the interaction between CRS and the non-dom regime, and the specific reporting thresholds in each jurisdiction are all complex and subject to change. If you have any concern about historical non-compliance with overseas account disclosure, seek specialist advice from a qualified tax adviser immediately — the benefits of voluntary disclosure over being discovered are significant.

How Global Investments Can Help

Global Investments works with internationally mobile clients navigating complex multi-jurisdictional financial arrangements. We can introduce you to specialist tax advisers who work across the UK, UAE, Cyprus, Spain, and other key markets — helping you ensure that your banking structure is correctly reported and compliant with your obligations in all relevant jurisdictions. Contact us to discuss your situation in confidence.