A high net worth mortgage is a residential mortgage structured for borrowers who meet the FCA HNW definition, being either annual net income of at least £300,000 or net assets of at least £3,000,000 excluding primary residence. A private bank mortgage is a related but distinct concept: a mortgage arranged through a private bank rather than a mainstream retail lender, typically used where the borrower has significant assets, complex income, international wealth, or a bespoke borrowing need. The two terms overlap heavily in practice but are not identical.
This extended definition explains both terms together, since they apply jointly across most expat HNW lending. It does not address which lender or structure is preferable in any given case, as that is a matter of individual circumstances.
Key Insights
- The FCA HNW threshold is annual net income of at least £300,000 or net assets of at least £3,000,000 (excluding primary residence), under FCA Handbook glossary entry G2953.
- Tailored MCOB provisions apply to lending to HNW customers, including MCOB 7.7, which permit a different disclosure and affordability framework for qualifying borrowers.
- Private bank mortgage is a market and underwriting label, not a separately defined statutory product type. Private banks typically assess the wider banking relationship alongside the loan itself.
- Loan size is not the defining factor: a private bank mortgage is profile-driven, with no universal entry point, although ticket sizes commonly start around £1 million.
- Multi-currency lending is common at the private bank level, which can be relevant where an expat borrower’s income or asset base is denominated outside sterling.
What a High Net Worth Mortgage Covers
The high net worth mortgage label has specific FCA meaning rather than being only a marketing term. The FCA Handbook defines a high net worth mortgage customer as one with annual net income of at least £300,000 or net assets of at least £3,000,000 (excluding primary residence), or whose obligations are guaranteed by a person at that level. Where the threshold is met, MCOB tailored provisions allow lenders to apply a different framework for disclosures and affordability than the standard mainstream framework. The HNW provisions sit alongside, rather than replace, the lender’s continuing obligations under PRA capital rules, FCA Consumer Duty, and anti-money-laundering rules that apply to all UK mortgage lending.
The defining factor is borrower profile rather than loan size. A large mortgage to a salaried professional whose income falls below the HNW threshold is a mainstream loan, not a HNW one. A smaller mortgage to a borrower whose remuneration combines a modest base salary with substantial carried interest, deferred compensation, or wider investable assets can be a HNW case at a smaller ticket size.
What a Private Bank Mortgage Covers
A private bank mortgage is a mortgage arranged through a private bank rather than a mainstream retail lender. Private banks typically assess the case in full, weighing the wider financial position alongside the loan itself. Investable assets under management, the depth of the wider banking relationship (custody, advisory, deposits, trust services), and the borrower’s broader balance sheet often carry weight alongside income.
There is no single AUM threshold for private bank mortgage eligibility. Figures around £1 million are commonly cited as a typical entry point, with the level varying considerably by lender and client profile. Multi-currency lending is common, which can be relevant where an expat borrower’s income or asset base is denominated outside sterling. A GBP loan against foreign-currency assets introduces exchange rate risk that lenders factor into affordability and loan-to-value.
Private bank mortgage is a market and underwriting label rather than a separately defined statutory product type. The underlying loan, where secured on UK residential property, is a regulated mortgage contract under the same MCOB framework as any UK residential mortgage, with the HNW tailored provisions applying where the borrower meets the threshold.
Frequently Asked Questions
What is the difference between a high net worth mortgage and a private bank mortgage?
A high net worth mortgage is defined by reference to the borrower’s profile, specifically the FCA’s HNW mortgage customer thresholds of £300,000 income or £3 million net assets. The label has regulatory meaning under MCOB. A private bank mortgage is defined by reference to the lender: a mortgage arranged through a private bank rather than a mainstream retail lender. The two overlap heavily in practice because private banks predominantly serve clients meeting the FCA HNW thresholds, and mainstream lenders rarely operate at the same level of bespoke underwriting. However, a HNW-qualifying borrower can in principle take a mortgage with a non-private-bank specialist lender, and a private bank can lend to a borrower below the FCA HNW threshold subject to its own credit policy. The categories are related but not coterminous.
How is complex income assessed by private banks for expat HNW borrowers?
Private banks typically assess complex income on a fuller basis than mainstream lenders. Bonuses are a common example: mainstream lenders typically credit only a fraction of variable income, often averaged over two or three years, while private banks may consider the bonus history, expected schedule, and employer’s compensation policy in more depth. Carried interest, common among private equity and hedge fund partners, is rarely accommodated by mainstream lenders but is treated case-by-case at private bank level, considering fund vintage, crystallisation timing, and historical realisations. Deferred compensation including RSUs and long-term incentive plans follows a similar pattern. Foreign-currency income is typically subject to a haircut at mainstream lenders but can be treated more flexibly at private bank level where the wider currency position is supported by liquid assets.
What investable assets typically count for private bank mortgage AUM?
Investable assets are typically held in marketable securities such as listed equities, investment-grade bonds, mutual funds, and ETFs, with cash, fixed-income holdings, and certain alternatives often counting in part. Real estate held outside the primary residence may count for some lenders. The practical question for expat borrowers is which structures the relevant private bank will recognise for AUM purposes: offshore trusts, family investment companies, and joint accounts are accepted by some banks and not others. Where assets are held in custody with the lending bank itself, they typically count more straightforwardly than assets held elsewhere. Deposit norms for HNW expat mortgages typically range from 25% to 40%, although a substantial banking relationship can sometimes support lower loan-to-values, and outcomes remain bespoke rather than promised in advance.
Important Considerations
The information in this entry is general educational reference only and does not constitute regulated mortgage, tax, or legal advice. Private bank lender appetite, AUM thresholds, accepted asset structures, multi-currency capacity, and cross-border tax treatment vary considerably between providers and over time. Tax treatment of HNW arrangements depends on individual circumstances and warrants specialist tax advice. For personalised guidance, professional mortgage, tax, or legal advice is appropriate.