There is no single deposit percentage that applies to every foreign national mortgage in the UK. The amount required depends on the lender, borrower profile, property, mortgage purpose, residence, income, credit history and the loan-to-value the lender is prepared to offer.
This page focuses specifically on foreign national mortgage deposits and LTV. If your main question is whether money held abroad can be used and how the source of funds is evidenced, see our overseas savings mortgage deposit guide. For the wider citizenship-led mortgage route, use our Foreign National Mortgages service page.
How much deposit does a foreign national need for a UK mortgage?
The correct answer is lender-specific. A foreign national should not assume that a fixed 25%, 30% or 40% deposit applies simply because they do not hold British citizenship.
The maximum loan-to-value available can change according to the complete case. A stronger application may fit one lender at a higher LTV, while another case may require more equity because of residency, income, credit, property or ownership factors.
Foreign nationality and overseas residence are not the same thing
A foreign national is someone who does not hold British citizenship. An overseas resident is someone who lives outside the UK. The same applicant can be one, both or neither.
This matters because a non-British citizen who already lives and works in the UK may be assessed differently from a non-British citizen who lives abroad and earns in a foreign currency. Deposit and LTV should therefore be considered alongside both citizenship and current residence.
What can affect the deposit or maximum LTV?
- Visa or residency position: some lenders differentiate between settled, permanent and time-limited residency positions.
- Current country of residence: overseas residence can narrow lender appetite or introduce additional checks.
- Income source and currency: UK salary, foreign salary, self-employment, company income and other income types can be treated differently.
- UK credit history: a limited UK credit footprint may affect lender choice, although it does not automatically prevent a mortgage.
- Property use: residential, buy-to-let and other property-finance cases use different underwriting approaches.
- Property type: construction, tenure, condition, location and valuation can affect the lender’s security assessment.
- Ownership structure: personal, joint and company/SPV borrowing are not assessed in the same way.
- Mortgage purpose: purchase and remortgage cases can produce different LTV and evidence requirements.
Deposit vs loan-to-value
Loan-to-value, or LTV, is the mortgage amount as a percentage of the property’s value or purchase price used by the lender. The deposit is the portion not covered by the mortgage, before allowing for fees and other purchase costs.
For example, a lower maximum LTV means the buyer needs more equity or deposit. But the available LTV is not determined by nationality alone; it comes from the full lender assessment.
Source of funds matters as much as the deposit amount
Lenders and conveyancers may need to understand where the deposit came from and how the money moved into the transaction. This is particularly important when funds are held overseas or have passed through several accounts.
- accumulated salary savings;
- sale proceeds;
- investment proceeds;
- business or company income;
- gifted funds where acceptable;
- inheritance where properly evidenced; or
- other legitimate funds supported by a clear audit trail.
Where the money is held abroad, avoid moving it repeatedly between accounts purely to prepare for an application. A clean evidence trail is usually easier to explain than a sequence of unexplained transfers. Our overseas savings deposit guide covers that topic separately.
Residential vs buy-to-let deposits
A residential mortgage and a buy-to-let mortgage are underwritten differently. Residential borrowing is primarily driven by personal affordability, while buy-to-let usually gives substantial weight to expected or actual rent and the lender’s rental stress test.
Foreign nationals buying rental property should therefore not assume that the same deposit or LTV applies to a residential purchase. For overseas landlords, see our UK mortgage options for overseas residents.
Can a larger deposit help?
A larger deposit reduces the requested LTV, which can change the range of products or lenders available. But it does not override other underwriting issues such as unacceptable residence, unsupported income, property problems, credit concerns or incomplete source-of-funds evidence.
That means “increase the deposit” is not a universal fix for an application that does not otherwise fit the lender’s criteria.
Documents commonly used to evidence the deposit
- recent bank or savings statements;
- evidence showing how savings accumulated;
- sale completion statements where funds came from an asset sale;
- investment statements and transaction records;
- gift documentation where permitted;
- inheritance or probate evidence where relevant;
- company records where business funds are involved; and
- currency-transfer records where money is moved into sterling.
The exact evidence depends on the lender, solicitor, source of funds and jurisdiction. Documents from outside the UK can require additional verification.
Common deposit mistakes foreign national applicants make
- assuming every foreign national needs the same percentage deposit;
- choosing a property before checking realistic maximum LTV;
- moving overseas money between several accounts without preserving evidence;
- treating gifted or business funds as automatically acceptable;
- ignoring purchase costs and keeping no cash buffer beyond the deposit;
- assuming a larger deposit fixes an otherwise unsuitable application; and
- confusing foreign-national criteria with non-resident or expat criteria.
If an application has already failed, use our foreign national UK mortgage assessment options to review the wider lender-fit issues before applying again.
Frequently asked questions
Do foreign nationals always need a 25% deposit?
No. There is no universal 25% rule. Required equity and maximum LTV depend on the lender and complete application.
Can I use overseas savings for the deposit?
Potentially. The funds normally need to be acceptable to the lender and conveyancer and supported by appropriate source-of-funds evidence.
Does a bigger deposit guarantee approval?
No. A lower LTV can help in some cases, but the lender still assesses residence, income, credit, property, ownership structure and supporting evidence.
Is the deposit different for buy-to-let?
It can be. Buy-to-let underwriting uses different criteria, including rental affordability and property-investment factors.
For a live case, visit our Foreign National Mortgages service page.
Mortgage availability is subject to lender criteria, affordability, valuation and underwriting. This article provides general information and does not constitute tax or legal advice.
