Foreign Currency Accounts: Managing Multi-Currency Exposure

For anyone with income, assets, expenses, or investments in more than one currency, foreign currency accounts — accounts that hold and transact in a currency other than the account holder's domestic currency — are among the most useful financial tools available. Used well, they reduce unnecessary currency conversion costs, allow you to match income and expenditure in the same currency, and give you flexibility to convert at favourable rates rather than at the point of necessity.

This guide explains how foreign currency accounts work, what types are available, when they make sense, and the risks and costs to understand before opening one.

What Is a Foreign Currency Account?

A foreign currency account (also called a foreign currency deposit account, FCA, or simply a currency account) holds balances in a currency other than the account holder's home currency. If you are UK-based and hold a USD account at a UK bank, that is a foreign currency account. If you are an expat in Singapore holding a GBP account, the GBP balance is a foreign currency account in that context.

Foreign currency accounts may be held at:

• Domestic banks — major UK banks (HSBC, Barclays, NatWest, Lloyds, and others) offer foreign currency accounts to retail, business, and private clients, though product terms vary significantly
• Specialist foreign exchange providers — companies like Wise (formerly TransferWise), Airwallex, and Currencies Direct offer multi-currency accounts designed specifically for international use
• Offshore banks — Channel Islands, Isle of Man, Singapore, and UAE banks typically offer multi-currency accounts as a standard feature
• Private banks — virtually all private banking relationships include multi-currency account capability

Why Hold Money in Foreign Currency?

Natural hedging of expenses. If you pay school fees in euros, a mortgage in Australian dollars, or staff in US dollars, holding a balance in those currencies means you are not repeatedly converting sterling at whatever rate prevails when a bill falls due.

Matching income and expenses. A consultant paid in euros who also has euro-denominated expenses can hold both in EUR without converting back and forth. Each conversion is a cost; eliminating unnecessary conversions improves the economic outcome.

Investment returns in specific currencies. International investment portfolios may generate returns in multiple currencies. Holding those returns in the original currency rather than converting immediately allows flexibility to invest further in that currency, convert at a strategic moment, or diversify currency exposure deliberately.

Property-related transactions. Purchasing property abroad, remitting rental income, or paying overseas mortgage instalments are all more efficiently managed with an account in the relevant currency.

Opportunity for favourable conversion timing. By holding currency you will eventually need to spend (for example, USD you will use to invest in US equities, or EUR for a property purchase), you can convert your sterling when the exchange rate is favourable rather than when the transaction is imminent.

Types of Foreign Currency Accounts

Current/transactional accounts. Allow regular receipts, payments, and transfers in the relevant currency. Typically come with a debit card and online banking access. Useful for everyday foreign currency management.

Savings/deposit accounts. Hold foreign currency balances and may pay interest, though interest rates on foreign currency deposits depend on the interest rate environment in the relevant currency's home market. A USD account at a UK bank will typically earn interest broadly linked to US interest rates, not UK rates.

Fixed-term currency deposits. Fix a foreign currency balance at an agreed rate for a defined period. Useful when you know you will hold a specific currency balance for a known timeframe and want the certainty of a fixed rate.

Multi-currency wallets (fintech). Platforms like Wise and Revolut offer what are functionally foreign currency accounts within a single app, allowing balances in dozens of currencies and instant conversion at interbank or near-interbank rates. These differ from bank accounts in important ways (see below).

Foreign Currency Accounts at Banks vs Fintech Platforms

Banks. Regulated deposit-taking institutions. Balances are deposits protected by the deposit compensation scheme of the relevant jurisdiction (UK FSCS, Jersey DCS, etc.), subject to applicable limits. Banks typically offer limited currencies (the major ones — USD, EUR, CHF, AUD, JPY, HKD, CAD, and a handful of others) but are appropriate for larger balances where deposit protection and institutional stability matter.

Fintech platforms. Authorised electronic money institutions (EMIs), not banks. They hold client funds in segregated accounts but do not make loans, and client funds are not covered by deposit protection schemes in most jurisdictions (though safeguarding requirements apply). Typically offer broader currency ranges, better exchange rates, lower fees, and more convenient mobile interfaces than traditional banks. Appropriate for transactional use and smaller balances; less so for holding large savings balances where deposit protection and institutional credibility matter.

For HNW clients, a combination of both is common: a bank-based foreign currency account for significant balances and a fintech platform for day-to-day small-value international transactions.

Currency Risk in Foreign Currency Accounts

Holding a foreign currency account introduces currency risk in both directions:

Sterling appreciation. If you hold USD and sterling strengthens against the dollar, your USD balance is worth less in sterling terms when you eventually convert.

Sterling depreciation. If sterling weakens, your USD balance is worth more in sterling. This can work in your favour if USD was your intended end currency, but creates unexpected loss if you were planning to convert back.

Foreign currency accounts are tools for managing currency exposure, not for eliminating it. Knowing why you are holding a specific currency balance — and having a view on whether you will spend it in that currency or eventually convert — is important to using these accounts effectively.

If you are holding a large foreign currency balance speculatively (hoping for a favourable rate movement), be aware that this is a form of currency speculation with real downside risk. Currencies can and do move substantially and unexpectedly.

Interest on Foreign Currency Deposits

Interest rates on foreign currency deposits track the policy rate environment of the relevant currency:

• USD deposits earn rates linked to the US Federal Reserve rate
• EUR deposits earn rates linked to the ECB rate
• CHF deposits have historically paid very low or even negative rates given Swiss monetary policy, though this has been changing since the post-2022 rate environment

UK banks may add a margin below the equivalent domestic rate when paying interest on foreign currency deposits — often making the effective rate on a foreign currency savings account lower than you might achieve with a deposit directly in that country. For large balances, it is worth comparing rates across institutions, including offshore banks with competitive foreign currency savings products.

Tax Treatment

For UK residents, income and gains on foreign currency accounts are subject to UK tax:

Interest. Interest on foreign currency savings accounts is taxable as income in the UK in the year it arises, regardless of whether it is remitted to the UK. Declare it on your self-assessment return.

Currency gains. In principle, gains arising from currency movements on foreign currency accounts are subject to capital gains tax in the UK, though HMRC has a practical exemption for currency held in accounts used for personal expenditure abroad. The position for larger balances and business accounts is less clear-cut. Seek professional advice if you hold significant foreign currency balances with material gains.

Non-domiciled individuals. The tax treatment of foreign currency accounts for UK non-doms has been a specialist area, particularly under the remittance basis. The UK's non-dom rules changed significantly from April 2025. If your non-dom status was a factor in your banking and currency account arrangements, take updated professional advice on your position.

Practical Guidance

Match currency to purpose. Hold foreign currency balances for a reason — expected spending, investment, or hedging a known liability. Holding currency speculatively adds risk.

Compare rates before converting. When you need to convert balances, compare the rate offered by your bank against the spot rate and against specialist FX providers. The spread can be significant, particularly for larger sums.

Monitor balances in dormant accounts. Banks may apply inactivity charges to unused foreign currency accounts. Ensure any foreign currency account earns its cost.

Check deposit protection. Understand what deposit protection applies to foreign currency balances at your institution and in which jurisdiction.

Consider forward contracts for large known future transactions. If you know you will need a specific amount of foreign currency at a future date (for a property completion or investment subscription), a forward foreign exchange contract locks in today's rate for future delivery, removing the uncertainty of rate movements.

How Global Investments Can Help

Global Investments supports internationally mobile clients in structuring their banking to match their actual currency needs — ensuring they are not converting unnecessarily, are holding balances efficiently, and are using appropriate tools for both day-to-day FX management and large-value currency transactions.

We work with specialist FX providers and private banks to ensure our clients access competitive rates and appropriate financial infrastructure. For clients with significant multi-currency exposure, we can help integrate currency account management into a broader financial planning strategy.

Tax rules, product availability, and exchange rates change continuously. This guide reflects conditions as of 2026. Seek professional financial and tax advice tailored to your circumstances before making significant foreign currency decisions.