Approximately one in ten UK homebuyers is reportedly using money originating overseas as part of their property purchase, highlighting how frequently apparently domestic transactions now contain an international financial element.

The figure comes from source-of-funds data analysed by property due-diligence platform Thirdfort and highlighted by PrimeResi. Thirdfort announced this week that its technology has been used to verify the funds of more than one million buyers, sellers and giftors since the company launched its source-of-funds service in 2019. Its platform records whether purchase money comes from a mortgage, savings, a gift, inheritance, investments, dividends or other sources.

The finding should not be interpreted as meaning that one in ten purchasers is an overseas investor. A buyer can live, work and pay tax in Britain while still using money held in another country.

A British expatriate returning to the UK may bring home savings accumulated during an international career. A foreign national working in London may receive a parental gift from abroad. An entrepreneur may sell an overseas business, while another buyer may use proceeds from a foreign property, investment portfolio or inheritance.

In each case, the money may be entirely legitimate and the mortgage entirely affordable. The difficulty is proving, to the satisfaction of every relevant institution, where the funds originated, how they were accumulated and how they reached the UK purchase.

The deposit can consequently become more complicated than the mortgage.

Overseas Money Is Not the Same as an Overseas Buyer

Property commentary often treats international money as synonymous with foreign demand for British property. That overlooks the increasingly international nature of ordinary household finances.

A UK citizen may have worked in Singapore, Dubai or New York before returning home. A married couple may live in Britain while maintaining savings or investments in their respective countries of origin. An executive’s remuneration may be paid partly through an overseas share plan, while a business owner may hold retained capital in an international company.

Even clients who have always lived in the UK can receive cross-border money. Parents or grandparents living overseas may contribute towards the deposit. An inheritance may be administered in another jurisdiction, or proceeds may arise from a family property sold abroad.

These situations are not inherently problematic. The complexity arises because the institutions involved must understand more than the final bank transfer.

HMRC’s current anti-money-laundering guidance distinguishes between the source of funds and the source of wealth. Source of funds means the origin of the particular money being used in the transaction. Source of wealth concerns how the individual accumulated their wider financial position, such as through employment, business ownership, inheritance, investments or the sale of an asset.

A transfer arriving from a recognised UK bank does not, by itself, establish either point. The solicitor or another regulated professional may still need to understand how the money was generated before it entered that account.

The Mortgage Decision Is Only One Part of the Transaction

Mortgage applicants naturally focus on whether a lender will accept their income and advance the required amount. That is essential, but it is not the only approval required before completion.

The mortgage lender will examine the applicant, the deposit and the property. The conveyancer must fulfil separate legal and regulatory obligations. The estate agent also has customer due-diligence responsibilities and may request source-of-funds information before a transaction progresses.

The UK Government’s homebuying guidance warns purchasers that estate agents, lawyers and mortgage lenders must verify identity and may request information showing the source of the purchase funds. It specifically identifies savings, property-sale receipts, inheritance and financial gifts as examples requiring evidence. A failure to provide the necessary documentation can delay the transaction.

These parties do not necessarily apply identical evidential standards. A mortgage lender may be comfortable with a gifted deposit after receiving a signed declaration and evidence of the donor’s identity. The conveyancer may require a longer trail showing how the donor accumulated the money and through which accounts it travelled.

An estate agent may have completed its checks at the beginning of the transaction, only to revisit them if the funding structure changes later.

Passing one organisation’s checks does not compel another to accept the same evidence.

The Immediate Source of Funds Is Not Always Enough

Suppose a buyer provides a statement showing £200,000 in a UK savings account. That establishes where the money is currently held, but it may not explain where it came from.

If the funds arrived three weeks earlier from an overseas account, the solicitor may request statements for that account. If the overseas account received the money from a company, investment platform or property sale, evidence of the underlying event may also be needed.

HMRC’s updated guidance states that source-of-funds enquiries should establish not simply which account remitted the money, but how the client obtained the money used in the transaction.

A complete evidence trail might therefore include overseas bank statements, a completion statement from a foreign property sale, investment-account records and currency-transfer confirmations. For business proceeds, the client may need company accounts, sale agreements, dividend documentation or evidence of their ownership interest.

The issue is provenance rather than geography. A clean, well-documented transfer from overseas can be easier to verify than money that has moved repeatedly between UK accounts without a clear explanation.

Several Overseas Accounts Can Create a Layered Trail

International clients often consolidate their deposit from several sources.

A buyer may combine current earnings in Britain with savings accumulated overseas, the sale of investments in another country and a family gift from a third jurisdiction. The money may pass through a foreign-currency account and a currency broker before arriving with the UK conveyancer.

Each step can be legitimate, but every additional movement lengthens the evidential chain.

The client should retain statements showing the balance before and after each transfer, together with documentation linking the accounts to the same beneficial owner. Where a regulated foreign-exchange provider is used, the transfer confirmation should identify the sending account, the currency conversion and the receiving account.

Problems commonly arise where money is transferred too early without preserving the records, or where several sums are combined in one account before the solicitor has seen the underlying statements. The final balance may be obvious, but reconstructing its history can become time-consuming.

A clear schedule showing each source, amount, currency and transfer route can make the review considerably easier.

Overseas Gifts Require Evidence From the Donor

Family assistance is an increasingly important source of deposit capital, but an overseas gift introduces both mortgage and anti-money-laundering considerations.

The lender will normally need to know that the money is a genuine non-repayable gift rather than an undisclosed loan. It may require confirmation that the donor will not obtain an ownership interest or legal charge over the property.

The conveyancer may conduct due diligence on the donor as well as the buyer. That can involve obtaining identification, address evidence, bank statements and documents showing how the donor accumulated the money.

A statement showing that a parent has £100,000 available does not necessarily explain whether it arose through salary savings, a business, an inheritance or a property sale. Where the gift is substantial compared with the donor’s apparent income, more detailed evidence may be requested.

The donor’s country of residence also matters. Documents may use a different script, accounting format or identification system. The regulated parties may require certified translations or additional verification before relying on them.

These enquiries should begin before the gift is transferred. Sending the money first and attempting to explain it shortly before exchange can create avoidable delays.

Overseas Property Sales Need More Than a Bank Credit

Proceeds from the disposal of an overseas home or investment property can provide a substantial UK deposit. They can also create one of the longer source-of-funds trails.

The buyer may need to produce the sale contract, proof of their ownership, the foreign lawyer or notary’s completion statement and bank records showing receipt of the net proceeds. If a mortgage was repaid from the sale, the completion documentation should reconcile the gross price with the amount eventually transferred.

Local tax or transaction costs may also explain why the bank credit differs from the headline sale value.

The evidence should identify the property, seller, purchaser, completion date and amount received. A brief transfer description stating only “property proceeds” is unlikely to be enough on its own.

Where the sale documents are not in English, an appropriate translation may be required. The conveyancer will decide whether an informal translation is sufficient or whether a certified professional translation is necessary.

Timing can also affect the mortgage application. If the UK purchase depends on the foreign sale completing, the lender and solicitor need to understand whether the funds will be available before the contractual completion date.

Business Proceeds Can Blur Personal and Corporate Money

Entrepreneurs frequently hold wealth within companies rather than personal savings accounts. Extracting money for a property purchase may involve salary, dividends, a director’s loan repayment, the sale of shares or the disposal of the business itself.

The route must be legally and financially coherent.

A company bank statement showing sufficient cash does not automatically mean that the shareholder can use that money personally. The client may need board minutes, dividend vouchers, accounts or confirmation from an accountant explaining the basis on which the funds were extracted.

Where the company is overseas, the review may extend to the company’s ownership, trading activity and jurisdiction. HMRC identifies transactions involving complex overseas corporate structures as presenting increased risk because beneficial ownership and the underlying origin of money can be harder to establish.

This does not imply that an international company is illegitimate. It means the evidence burden can be greater, especially where several holding companies, trusts or nominee arrangements sit between the trading activity and the buyer.

Tax advice should be obtained before extracting funds. A transfer that satisfies a mortgage timetable but creates an avoidable personal or corporate tax problem is not a successful funding strategy.

Investment Portfolios and Offshore Accounts Require Transaction Records

A client selling investments to fund a deposit may need to demonstrate both ownership of the portfolio and the disposal that generated the cash.

Suitable evidence could include investment statements, contract notes, redemption confirmations and corresponding bank credits. Where the investments have been held for many years, the adviser may also ask how the capital used to acquire them was originally accumulated, particularly if the transaction is high value or otherwise presents increased risk.

Offshore accounts are not automatically suspicious. They may be used for international employment, tax residence, investment custody or ordinary multi-currency banking.

Nevertheless, HMRC guidance identifies foreign accounts, secrecy jurisdictions, foreign currencies and unexpected changes in funding arrangements as factors that may increase the risk associated with a property transaction.

The distinction between legitimate privacy and opaque ownership becomes important. The client should be able to establish their connection to the account, the origin of the assets and the route by which the money will reach the transaction.

Trusts and Overseas Entities Add Beneficial-Ownership Questions

Where the deposit or property ownership involves a trust, company or foundation, the regulated parties must identify the relevant beneficial owners and controllers.

The required evidence can include trust deeds, corporate registers, certificates of incorporation, organisational charts and identification for settlors, trustees, beneficiaries, directors or shareholders. The exact requirements depend on the structure and the institution conducting the checks.

If an overseas entity itself acquires UK land, it may also need to register with Companies House and disclose its registrable beneficial owners. Overseas entities generally require an Overseas Entity ID before they can register qualifying acquisitions, disposals, leases or charges with the relevant UK land registry.

This is a different issue from a person buying in their own name using money held abroad. Clients should not assume that using overseas money and purchasing through an overseas entity are treated in the same way.

A corporate or trust structure should normally be established for a genuine legal, commercial, succession or tax reason. It should not be introduced shortly before exchange merely because the funds happen to be offshore.

Currency Conversion Creates a Moving Deposit

Foreign funds add an exchange-rate dimension to the transaction.

A buyer may calculate that €350,000, US$400,000 or another foreign-currency balance is sufficient to provide the deposit and acquisition costs. The sterling amount can change before conversion, particularly where completion is several months away.

The mortgage offer may state a fixed sterling loan and require a minimum sterling deposit. Stamp Duty Land Tax, legal fees and other costs are also payable in sterling.

A weaker exchange rate can therefore create a funding shortfall even when the overseas balance itself has not changed.

Clients should decide when and how the currency will be converted, whether they need to protect a target exchange rate and how transfer times interact with exchange and completion. Foreign-exchange products can carry costs and risks and should be discussed with an appropriately authorised provider where relevant.

The currency plan must also preserve the evidence trail. Funds should move through accounts and providers capable of supplying clear transaction records.

High-Risk Jurisdictions Do Not Mean Automatic Rejection

Some countries and transaction types receive enhanced scrutiny because of sanctions, corruption, money-laundering or transparency concerns.

HMRC’s 2026 guidance requires regulated businesses to apply enhanced due diligence in circumstances including involvement with jurisdictions subject to a Financial Action Task Force call for action. Other overseas jurisdictions may still be considered higher risk as part of the firm’s wider assessment, even where enhanced checks are not automatically mandated.

This does not mean every person connected with such a jurisdiction is prohibited from purchasing UK property. It means the lender, solicitor or agent may require more extensive evidence and senior approval.

Sanctions are a separate issue. A bank or regulated professional cannot proceed where funds, individuals or entities are subject to applicable restrictions.

Clients with connections to jurisdictions attracting greater scrutiny should disclose those connections early. Attempting to simplify the presentation by omitting an account, intermediary or corporate entity is likely to create a more serious problem when it emerges later.

Documents That Are Not in English Can Delay Approval

International wealth frequently generates records in another language.

Bank statements may be understandable from the numbers alone, but legal agreements, inheritance documents, business-sale contracts and property completion statements may require translation before a UK professional can rely on them.

The translation should cover the parts necessary to establish the parties, transaction, date, amount and nature of the funds. The solicitor may specify whether it must be certified and who is permitted to provide it.

Clients should avoid using automated translation as the only evidence for material legal documents unless the professional reviewing the case explicitly agrees.

Obtaining translations after the conveyancer raises the issue can add days or weeks. Identifying the relevant foreign-language documents during the initial finance review allows the work to be commissioned before the transaction becomes time-sensitive.

Mortgage Lenders Can Apply Their Own Deposit Restrictions

A solicitor’s willingness to verify overseas money does not guarantee that the mortgage lender will accept it.

Some lenders are comfortable with foreign savings, overseas gifts and proceeds from international asset sales. Others restrict the countries from which deposit funds can originate, require the money to be held in a UK account for a defined period or will not accept funds passing through particular structures.

A lender may also distinguish between a deposit owned by the borrower and a gift from another person. The donor’s residency, relationship to the applicant and source of wealth can influence acceptance.

Private banks and specialist lenders may offer greater flexibility for complex international clients, but they will still apply financial-crime and source-of-wealth controls. In higher-value transactions, their enquiries may be more extensive because the sums and structures are larger.

The lender should therefore be selected with both the applicant and deposit in mind. A strong income fit is of limited value if the institution cannot accept the proposed funding route.

Last-Minute Changes Attract Additional Scrutiny

One of the greatest risks is changing the deposit after the mortgage and legal work are underway.

A buyer may initially declare that the deposit comes from personal savings, then introduce a parental gift because exchange costs are higher than expected. Another may replace money from one account with an overseas investment withdrawal or change the person sending the completion funds.

HMRC specifically advises estate agents to consider whether the source of funds changes during the transaction, including the introduction of a gifted deposit or a last-minute change of mortgage provider.

A change is not necessarily unacceptable, but it can restart part of the due-diligence process. The new contributor may require identification, sanctions screening and source-of-funds checks. The lender may also need to approve the revised deposit structure.

Clients should tell their mortgage adviser and solicitor as soon as a change becomes possible, rather than waiting until the funds are ready to be sent.

A Cross-Border Deposit Should Be Mapped Before an Offer Is Made

The most effective approach is to construct the source-of-funds trail at the beginning of the purchase.

The review should identify the original source of wealth, the immediate source of each deposit contribution, the account in which it is currently held and every expected movement before completion. It should also record the relevant currency, account owner, gifting relationship and documents available.

That process can reveal practical issues before they threaten the transaction. A donor may need to obtain replacement bank statements. An overseas property lawyer may need to provide a completion document. A company accountant may need to explain a dividend or director’s loan repayment.

The buyer can then choose a mortgage lender whose criteria fit the deposit, rather than obtaining a decision in principle first and discovering the conflict later.

For larger or more complex cases, the client’s conveyancer, mortgage adviser, accountant, wealth manager and tax adviser may need to coordinate their work. Each has a different role, but the factual description of the funds should remain consistent across all submissions.

A Clear Overseas Funding File Can Strengthen the Transaction

International money does not have to make a purchase slow or uncertain.

A well-prepared buyer can present a clearer file than an applicant using poorly documented domestic money. The essential requirement is that the figures, documents and explanation reconcile.

The bank statements should correspond with the contracts and transfer records. The person sending the money should match the declared owner or donor. Currency conversions should explain differences between the original amount and the sterling credit.

Where the money has moved through several stages, a concise written schedule can guide the reviewer through the evidence without replacing the underlying documents.

This preparation is particularly valuable in competitive transactions. A seller or estate agent may be more comfortable accepting an offer from an international buyer who has already completed the relevant checks than from another purchaser whose funding remains uncertain.

The Deposit Can Be the Real Underwriting Challenge

The report that one in ten buyers uses money from overseas reflects how international the UK property market has become at an individual level.

Cross-border funds are no longer relevant only to ultra-high-net-worth purchasers or offshore companies acquiring prime London homes. They arise in mainstream family purchases, expatriate relocations, gifted deposits and ordinary transactions involving internationally mobile professionals.

For many of these buyers, obtaining the mortgage is entirely possible. Their income may be strong, their credit record clean and the proposed borrowing affordable.

The greater risk is that the deposit reaches the transaction without a complete and acceptable history.

A cross-border purchase should therefore be assessed through two parallel questions: can the client obtain the mortgage, and can every pound of the required capital be evidenced to the standards of the lender, conveyancer and other regulated parties?

Addressing both questions before the property is found gives the buyer more lender choice, reduces the risk of late enquiries and protects the agreed completion timetable.

Overseas money is not necessarily problematic money. It is money that usually requires a better-prepared explanation.