Moving Large Sums of Money Internationally: The Complete Guide

Every year, internationally mobile individuals transfer billions of pounds for property purchases abroad, pension income conversions, business investments, and the repatriation of overseas earnings. The vast majority of these transfers are made through banks — and the vast majority pay significantly more than they need to.

Understanding the mechanics of international money transfer, the role of specialist FX brokers, and the compliance landscape will allow you to keep more of your money and move it with confidence.

---

The True Cost of International Money Transfer

When your bank quotes you an exchange rate for an international transfer, it is not quoting you the interbank (mid-market) rate — the rate you see on Google or Bloomberg. It is quoting you a rate that includes a spread (a mark-up) that represents the bank's profit on the transaction.

Typical bank FX spreads:

• Retail current account: 2.5–4% above mid-market rate
• Business account: 1.5–3% above mid-market rate
• Private banking client: 0.75–1.5% above mid-market rate

The impact of this spread is substantial on large transactions:

Transfer Amount	Bank Spread (3%)	Mid-Market Rate Transaction Cost	Potential Saving
£50,000	£1,500	£300–500	£1,000–1,200
£250,000	£7,500	£500–1,000	£6,500–7,000
£500,000	£15,000	£750–1,500	£13,500–14,250
£1,000,000	£30,000	£1,000–2,500	£27,500–29,000

A specialist FX broker typically charges a spread of 0.25–0.75% above mid-market rate on a transaction of £250,000 or more. On a £500,000 property purchase in Spain, the saving from using a specialist broker rather than a UK high-street bank might be £10,000–14,000 on a single transaction.

---

Specialist FX Brokers

A number of regulated specialist FX brokers operate in the UK market, handling large international transfers at significantly better rates than banks. Major providers include Moneycorp, OFX, Clear Treasury, Currencies Direct, TorFX, and Caxton. They are regulated by the Financial Conduct Authority (FCA) for money transmission services.

How they differ from banks:

• Their core business is FX — they have better access to liquidity and accept lower margins per transaction.
• They are not retail banks, so they do not need to cross-subsidise other banking services through FX.
• Most offer relationship managers for large transactions, who can provide market commentary and help time transfers.
• They cannot accept deposits or lend money (they are not banks).

Client money protection: specialist FX brokers hold client funds in segregated accounts. However, they are not protected by the Financial Services Compensation Scheme (FSCS) in the same way that bank deposits are protected (up to £120,000 per person per firm since 1 December 2025). For very large transfers, you should confirm the broker's financial strength and client money protection arrangements before transferring funds.

---

Forward Contracts: Locking In Today's Rate

An FX forward contract allows you to agree today's exchange rate for a currency transfer that will take place at a specified date in the future — typically between one month and 24 months ahead.

How it works: you agree with the FX broker to buy €600,000 at a rate of 1.17 GBP/EUR in six months' time. You pay a deposit (typically 5–10% of the contract value) immediately. In six months, you pay the remaining balance and receive your euros at the agreed rate, regardless of where the market rate has moved.

Why use forward contracts:

• Known liability: if you are purchasing a property in Spain with completion due in six months, you know you will need exactly €600,000. Booking a forward contract today eliminates exchange rate risk — you know the GBP cost of the property with certainty.
• Protecting against adverse movement: if GBP weakens significantly against EUR in the six months between exchange of contracts and completion, you are protected — you have locked in the rate.
• Budget certainty: for business payments, payroll in foreign currencies, or regular income conversion, forward contracts provide budget certainty.

Risks and limitations:

• If GBP strengthens between the forward booking date and the execution date, you do not benefit — you are locked in at the lower rate.
• You must execute the contract at the agreed date. If your property purchase falls through and you do not need the currency, you must either sell the currency you have bought (at the prevailing market rate) or negotiate an early closure of the contract, which may result in a cost.
• Margin calls: if the market moves significantly against you before the execution date, the broker may request additional deposit. Ensure you have liquidity to meet potential margin calls.

---

Limit Orders: Targeting a Specific Rate

A limit order instructs the FX broker to execute your currency conversion automatically if and when the market reaches your specified target rate.

How it works: GBP/EUR is currently trading at 1.15. You believe it may improve to 1.20 over the coming months, and you are not in a hurry to execute. You place a limit order to buy EUR at 1.20 GBP/EUR. The broker monitors the market 24 hours a day; if the rate reaches 1.20, the transaction is executed automatically.

Best suited for: investors or property purchasers who are not under time pressure to complete a transaction, and who are targeting an opportunistic entry rate. A limit order removes the need to monitor the market constantly.

Stop-loss orders: a stop-loss order is the inverse — an instruction to execute if the market falls to a specified level. This protects against a further deterioration in an unfavourable rate, ensuring that you do not wait indefinitely for a rate that never arrives.

---

Anti-Money Laundering (AML) Requirements

Large international transfers attract scrutiny from FX brokers, banks, and regulators as part of anti-money laundering compliance. This is not a reflection on your integrity — it is a legal requirement, and the documentation required is essentially the same for all large transfers.

Common documentation requests:

Source of funds:

• Evidence of a property sale (completion statement, solicitor correspondence).
• Evidence of a pension fund withdrawal (pension provider documentation).
• Evidence of a business sale (share purchase agreement, accountant's letter).
• Inheritance: probate documentation, solicitor correspondence.
• Employment income: recent P60, payslips, tax returns.

Purpose of transfer:

• Property purchase: solicitor confirmation, property details.
• Investment: account details of the receiving investment institution.
• Business: invoice or commercial contract.

Identity verification:

• Passport.
• Proof of address (utility bill, bank statement, within three months).
• For companies: certificate of incorporation, directors' details, beneficial ownership declaration.

Be proactive: gather this documentation before initiating a large transfer. Delays frequently arise because clients are unprepared for the documentation request. Having everything organised in advance accelerates the process and avoids last-minute delays in property completions.

The size threshold: in practice, UK FX brokers apply enhanced due diligence on transfers above £10,000. The formal threshold for Suspicious Activity Reports (SARs) is lower in theory, but £10,000 is a practical trigger for enhanced scrutiny. There is no legal reporting obligation on the customer themselves for transfers of this size; the obligation falls on the financial institution. However, you will be asked to provide documentation.

---

Reporting Obligations for UK Residents

For the majority of UK residents (who are not US persons), there is no legal obligation to report international transfers to HMRC simply because of the transfer itself. However:

• Income and gains generating the transferred funds: if the transferred money represents taxable income (salary, pension, rental income) or taxable gains (property sale, investment disposal), you must report and pay tax on those income and gains through the UK self-assessment system, regardless of whether the money is kept in the UK or transferred overseas.
• Foreign income: if you move money earned overseas back to the UK and you were using the remittance basis (available to non-doms for tax years up to April 2025), the remittance itself could trigger a UK tax charge. This complexity no longer applies under the FIG regime (from April 2025), but historical remittances may still need review.
• US persons (FATCA and FBAR): US citizens and green card holders must report foreign bank accounts holding more than $10,000 at any point in the year (FBAR), and foreign financial accounts meeting specified thresholds (FATCA Form 8938). These obligations apply regardless of UK residence or domicile.

---

Currency Strategy for Property Purchases Abroad

Property purchases are often the largest single international currency transaction an HNW individual will make. A structured approach is worthwhile:

Spain (EUR): EUR/GBP is volatile over short to medium timeframes but broadly mean-reverts over the long term. A property purchase with a six-month completion window is an excellent candidate for a forward contract, booked at exchange of contracts. Avoid the temptation to wait for a "better rate" — a 2% improvement in the rate saves you £10,000 on a €500,000 purchase, but a 2% deterioration costs you the same.

UAE (AED): the UAE Dirham is pegged to the US Dollar at 3.67:1. Buying a UAE property is essentially taking USD exposure. GBP/USD is more volatile than GBP/EUR; the same forward contract logic applies.

Thailand (THB): the Thai Baht floats and is moderately volatile against GBP. For a large property purchase, a forward contract or limit order strategy is appropriate depending on your timeline.

Ongoing income conversion: retirees receiving UK pension income who spend in an overseas currency (e.g. EUR in Spain, AED in UAE) should consider a regular conversion arrangement with a specialist FX broker. Many brokers offer standing instructions to convert a fixed GBP amount to a foreign currency on a regular schedule, at institutional rates.

---

Practical Checklist for a Large International Transfer

• Compare at least two specialist FX brokers' rates before booking.
• Obtain a quote for the forward contract (if your transaction date is more than 30 days ahead) and compare with the spot rate.
• Prepare source of funds documentation in advance.
• Verify the receiving bank's details (IBAN, SWIFT/BIC) before initiating the transfer — errors in international bank details can cause transfers to be returned (at cost and delay) or, in rare cases, lost.
• Confirm the amount your recipient needs to receive net of any receiving bank charges (some banks charge a fee to receive international transfers; the amount that arrives may be less than the amount you send).
• Keep records of the transfer for your tax records (exchange rate, amount, date, purpose).

Information in this guide is correct as at 2026. FX rates, broker availability, and regulatory requirements change. This guide does not constitute financial or investment advice. Currency exchange involves risk; the value of your money in another currency will fluctuate with exchange rate movements.

---

How Global Investments can help

Global Investments has extensive experience supporting clients with international property purchases, pension income management across currencies, and cross-border wealth transfers. We can introduce you to specialist FX brokers at negotiated rates, advise on forward contract strategy in the context of your overall cash flow plan, and ensure that AML documentation is properly prepared before your transfer is needed. Speak with our team before your next significant international payment.