What Is a Private Bank Mortgage (and Should You Consider One)?
A private bank mortgage is underwritten around your whole financial picture rather than a formula. For the right profile that changes everything; for most borrowers it is one route among several. Here is how to tell the difference, and how the two routes compare.
In short
A private bank mortgage is a home loan underwritten manually around your overall financial position: income in all its forms, assets, liquidity and career trajectory, rather than a fixed affordability formula. Private banks may consider income that mainstream models discount, such as carried interest, fund distributions or trust income, and loans are commonly seven figures. The trade-offs are real: some banks link lending to a wider relationship, timelines can be longer, and pricing reflects the bespoke work. Compared with a high street large-loan team, the private bank route usually wins on flexibility, in what it recognises and in how it can structure the loan (full interest-only, revolving facilities, cross-collateralised or portfolio-backed lending), and usually costs more. For some City professionals it is the only route that reads their income properly; for many others a well-chosen mainstream lender gets there first, which is why we run both.
Who this is for
You have heard private banks mentioned, perhaps by a colleague whose mortgage completed on income a high street lender would not recognise, and you want to know what the route actually involves. You may be years away from needing it. This article explains what a private bank mortgage is, how the underwriting differs, how the route compares with a mainstream large-loan team, and how we decide which one to run.
What is a private bank mortgage?
A private bank mortgage is a residential loan from a private bank or specialist lender, underwritten manually rather than scored against a standard affordability model. Instead of applying a fixed income multiple to a narrow definition of income, the bank builds a view of your whole financial position and lends against that. Loan sizes are commonly £1m upwards, though the defining feature is the underwriting method, not the number.
The practical difference shows up in what counts. A mainstream affordability model starts from payslips and tax calculations (SA302s) and applies set percentages to anything variable. A private bank underwriter can look at the same file and ask a different question: what does this person actually earn, own and owe, and is the loan sensible against that picture? Carried interest, fund distributions, retained profits, foreign currency earnings and trust income can all be part of the answer.
Private bank lending is one of the two routes to seven-figure borrowing. The other is a mainstream large-loan team, and our large loans guide covers how to access each. Read the large loans guide →
Director and Mortgage Adviser
Specialist mortgage broker for City professionals. David advises hedge fund and private equity professionals, law firm partners and other complex-income borrowers on when a private bank route genuinely beats the mainstream alternative, and structures the case either way.
Who are private bank mortgages for?
Private bank mortgages suit borrowers whose income or borrowing need does not fit a standard model. In our experience the profiles below come up most often. Being on this list does not mean a private bank is your best route; it means the route deserves a proper look.
Complex income
Carried interest, fund distributions, deferred bonuses, foreign currency pay or trust income. Mainstream models may discount or exclude these entirely; a private bank underwriter can weigh them on their merits.
Partnership income
Equity partners at law and accountancy firms, particularly newly made-up partners whose income history at partner level is short. Private banks often already bank colleagues at the same firm and understand the pay structure.
Asset-rich, income-light
Significant liquid wealth alongside modest declared income: founders between liquidity events, senior professionals winding down, or investors. Some private banks can underwrite against assets rather than income alone.
International profiles
Expats, foreign nationals and professionals with earnings or assets across borders. Private banks may be more comfortable with multi-jurisdiction files than most high street lenders.
How does private bank underwriting actually differ?
The core difference is that a private bank underwrites the person, while a mainstream model underwrites the paperwork. A high street affordability engine takes recognised income, applies a multiple and produces a number. It is fast and cheap, and for straightforward Pay As You Earn (PAYE) income it works well. A private bank replaces the engine with a credit committee: a person, or a small group, forming a view on your whole position.
That manual process changes three things. First, income recognition: an underwriter can decide that three years of fund distributions constitute reliable income even though no automated model has a box for them. Second, structure: interest-only lending, bespoke repayment profiles and lending in other currencies are all more available when a person is designing the loan. Third, judgement on trajectory: a credit committee can lend against where a career is clearly going, not only where the last two tax years say it has been.
Manual underwriting cuts both ways. A committee that can say yes to an unusual file can also ask questions an automated system would not, and the process is rarely quicker than a mainstream application. The right expectation is more flexibility, with at least as much scrutiny.
What can a private bank count as income?
Most forms of genuine earnings can at least be considered. Where a mainstream lender may take a percentage of variable pay or decline a category outright, a private bank can weigh the underlying reality: how the money is earned, how repeatable it is, and what evidence supports it.
In practice that can include carried interest and co-investment gains for private equity (PE) professionals, performance-linked pay and fund distributions for hedge fund professionals, retained company profits for directors, partnership profit share from the latest year rather than an average, vested equity compensation, and earnings in currencies other than sterling. None of this is automatic. The underwriter still wants a coherent evidence pack, and different private banks take different views of the same income type.
The recognition question matters more than the multiple for most complex-income borrowers. A generous multiple applied to a fraction of your real income produces a smaller loan than a sensible multiple applied to all of it. The worked example below shows the effect.
Please note: These figures are for illustrative purposes only. The actual amount you can borrow will depend upon your personal circumstances, credit profile, LTV, the lender's individual criteria and full affordability assessment.
How can a private bank structure a loan differently?
Income recognition is only half of what a private bank can offer. The other half is the shape of the loan itself. Because a person rather than a product grid is designing the facility, a private bank may be able to build structures that mainstream large-loan teams may not offer at all: full interest-only against a credible repayment plan, revolving facilities you can draw and repay, lending secured across more than one property, portfolio-backed borrowing, bullet repayments and multi-currency loans. For some clients the structure, not the borrowing figure, is the reason the route wins.
The structures that come up most often in our work are these. A revolving credit facility works like a large secured overdraft: you draw what you need, repay when a bonus, distribution or sale lands, and draw again later without remortgaging each time, which suits anyone whose liquidity arrives in lumps. Cross-collateralisation means the bank takes security over more than one property, or over a property and a portfolio, so the lending is judged against your whole asset base rather than a single loan-to-value on one home; that can unlock a purchase before a sale completes, or lending that a single-property LTV would cap. Portfolio-backed lending, sometimes offered alongside the mortgage, lets you borrow against liquid investments without selling them, so a deposit or a capital reduction does not have to mean crystallising a position at the wrong moment.
Beyond those, a private bank may offer a bullet repayment, where the whole balance is repaid at a fixed future date matched to a known event such as a fund realisation or a deferred award vesting; staged capital reductions tied to those same events; and loans denominated in the currency you are paid in, which can take exchange-rate risk out of the monthly payment. Mainstream lenders may offer part interest-only and a standard overpayment allowance; the rest of this list is, for the most part, private bank territory.
Every one of these structures carries its own terms and its own risks, and none is automatic: a credit committee approves a revolving facility or a cross-collateralised loan on the strength of the whole file, and it can change the terms if the picture changes. Whether a structure is worth having depends on how your income and assets actually behave over a year, which is exactly what the initial assessment is for. The comparison below sets the two routes side by side, including structure.
Private bank vs high street lender: how do the two routes compare?
A high street large-loan team lends against published criteria: recognised income, a fixed multiple, a set loan-to-value (LTV) ceiling, competitive pricing and a quick, largely automated process. A private bank lends against a judgement of your whole position, which can mean more income recognised, larger loans, full interest-only and multi-currency structures, and may come at a higher rate with a slower, more personal process. For most City professionals the mainstream route is usually the cheaper answer; the private bank route earns its premium when the mainstream route cannot capture enough of your income or offer the structure you need.
The comparison below sets the two routes side by side. Every line is a general pattern, not a promise: appetite and pricing vary from lender to lender and move over time.
The high street is usually the right fit where your income is largely recognised by a mainstream model (PAYE salary, bonus with a track record, or two years of self-employed or partnership history), your borrowing sits inside mainstream large-loan appetite, and part interest-only or a standard repayment structure does what you need. That describes most of our clients, including equity partners, bankers with six-figure bonuses and tech leaders with sizeable equity packages. Many mainstream large-loan teams have specialist underwriters who see complex income daily, and where one of them reads enough of your income the route is often cheaper and faster.
A private bank makes sense where the mainstream route falls short on one of four things: income that published criteria cannot capture (carried interest, trust income, earnings across several currencies, or wealth held in investment vehicles rather than payslips); loan-to-value beyond mainstream appetite at your loan size; full interest-only on a large balance, with a credible plan to reduce the capital through distributions, bonus overpayments or planned asset sales; or affordability that rests on assets rather than income. Our guide to interest-only mortgages for professionals covers the repayment-plan side, and the law firm partner who secured a £2.25m family home with part interest-only structuring shows how far a mainstream large-loan team can go before a private bank is needed.
The cost side needs quantifying for your own case rather than assuming. A private bank quote may carry a premium to a comparable mainstream large-loan product, in the rate, in an arrangement fee set as a percentage of the loan, or both, and some private banks may sharpen pricing where assets under management or a wider banking relationship is in place, so the headline quote is rarely the final position. The comparison that matters is total cost over the product term, rate plus fees plus any AUM implications, against the strongest mainstream alternative that actually recognises your income, worked from real illustrations for both routes.
Do private banks require assets under management?
Some do, some do not, and the picture has loosened. Assets under management (AUM) means placing a portion of your investable wealth with the bank, and historically it was the price of admission: bespoke lending in exchange for a broader relationship. That model still exists, and where it applies the expected commitment can be significant.
Alongside it, a number of private banks now offer what is known as dry lending: a mortgage on its own merits with no AUM condition. Others sit in between, pricing more keenly where a relationship exists but not requiring one. Which banks take which position changes over time, which is one reason an introduction through a broker who places these cases regularly is worth having.
If AUM is proposed, treat it as part of the total cost of the loan. Moving investments has consequences beyond the mortgage, and the right answer depends on your whole financial position, not just the lending terms. This is a decision to take with advice.
What are the trade-offs?
The advantages are the flexibility described above: recognition of complex income, bespoke structuring including interest-only, comfort with international profiles, and loan sizes that mainstream criteria may cap out on. Service is personal, and the underwriter who approves your case is often reachable throughout it.
The costs are equally concrete. Manual underwriting takes time, and a private bank application is rarely the quick route. Pricing varies: some cases price competitively against mainstream large-loan terms, others carry a premium that reflects the tailored work, and where AUM applies the full economics need weighing. Minimum loan sizes can also rule the route out early; many private banks are not interested below the high six figures.
A private bank mortgage is a tool for cases that need it. Where a mainstream lender recognises enough of your income, that route is usually cheaper and faster. Where recognition is the problem, the private bank route can be the difference between the loan working and not working at all.
How do you access a private bank mortgage?
Mostly through introduction. Private banks rarely advertise mortgage products, and several deal only through intermediaries: mortgage brokers, wealth managers and private client lawyers. An existing banking or investment relationship is another door in, but it is not a prerequisite for most lending cases.
What the introduction route actually buys you is fit. Private banks differ from each other as much as they differ from the high street: appetite for particular professions, income types, currencies and loan sizes varies bank by bank and moves over time. A broker who places these cases regularly knows which banks have appetite for your profile now, how each one wants the income evidenced, and where the terms genuinely differ. Presenting one well-prepared file to the right bank beats presenting a speculative file to three.
Expect a more thorough onboarding than a high street application. Alongside the usual income evidence (payslips, P60s, tax calculations (SA302s), partnership accounts, bonus award letters and bank statements), a private bank may also ask for a source-of-wealth narrative: how the deposit and the wider wealth were built, supported by statements, investment records or business documentation. For straightforward professional income that is quick to assemble. For inherited wealth, a business sale or international transfers, allow time to compile the trail, ideally before a property is found. Where AUM is involved, the bank's investment team may run its own conversation in parallel with the lending one.
For the wider picture of seven-figure lending, including asset-based affordability and the structures private banks and specialist lenders can offer, see High Net Worth (HNW) Mortgages: Options, Structures, and What Lies Beyond the High Street.
How does Kite Mortgages approach private bank cases?
High street first, private bank when it matters. Our default is the mainstream route where it fits: for most files it is the cheaper route, and many mainstream large-loan teams have become capable with complex income: specialist underwriters who see partnership and bonus income daily, enhanced multiples for defined professions at some lenders, averaging for bonus and commission, and workable rules for foreign currency. Where a lender on our panel reads enough of your income, that route is often the cheaper and faster one, and we say so.
A private bank is the right answer when the mainstream route cannot do what the case needs: income structure that published criteria cannot capture, loan-to-value beyond mainstream appetite at the loan size, full interest-only on a large balance, or affordability that rests on assets rather than income. We have met plenty of borrowers who were steered toward a private bank when a mainstream large-loan team could have done the same job for less, and the reverse: strong files that an automated model declined and a credit committee would have read properly.
So we run both where the case is close. That means modelling the total cost over the product term, rate, fees and any assets-under-management implications, side by side, and putting the two in front of you so you can choose on what matters for your situation. Where the private bank route wins, we prepare the file the way a credit committee wants to see it, introduce it to the banks on our panel whose appetite fits your profile, and negotiate on terms, including whether AUM is required at all. We place cases with private banks and with mainstream large-loan teams every week, and the value is in knowing which is the right answer for the file in front of us.
Should you consider one?
Ask three questions. Does a mainstream affordability model recognise substantially all of your income? Is your borrowing need within mainstream large-loan appetite? Do you need structural features, such as full interest-only or multi-currency lending, that mainstream criteria make difficult? If the answers are yes, yes and no, a private bank is probably not your route this time, and that is a good outcome: it usually means cheaper, faster borrowing.
If any answer goes the other way, the route deserves a serious look. The earlier that assessment happens the better, because the evidence pack a private bank wants takes time to assemble, and because knowing your realistic borrowing range shapes every decision that follows, from search area to offer strategy. Sometimes the answer is neither route: where the constraint on a family purchase is affordability rather than income recognition, a joint borrower, sole proprietor arrangement may do more than a private bank would.
Advice matters either way. The comparison between a private bank and the strongest mainstream alternative is rarely obvious from headline terms, and the right answer depends on your income structure, liquidity and plans. That assessment is exactly what a fee-free initial conversation is for.
Part of a wider guide
This article sits within our large loans guide, which covers the two routes to borrowing £1m and above, how affordability works at that scale, and which route fits which profile.
Read the large loans guide →FAQs
No. Some private banks focus on established wealth, but others lend primarily against income and career trajectory. What matters is whether your profile fits the bank's appetite, which is exactly what an introduction through a specialist broker establishes.
It varies by bank. Many private banks concentrate on loans of £1m or more, while some may consider smaller loans for a profile they want to bank long term. Below the high six figures, mainstream large-loan teams are usually the more realistic route.
Some do, some offer dry lending with no AUM condition, and some price differently depending on the relationship. Where AUM is proposed, weigh it as part of the total cost of the borrowing, with advice on the investment consequences as well as the lending terms.
Often, yes, because it assesses affordability differently. A private bank can consider income a mainstream model may exclude, such as carried interest, trust distributions or investment yield, and can weigh your overall wealth alongside income. Whether you should borrow the larger figure is a separate question, which is why we model what is comfortable as well as what is possible.
Not always, but often the pricing reflects the bespoke work involved. Some cases price competitively against mainstream large-loan terms; others carry a premium, and fees may be a percentage of the loan. The comparison that matters is total cost against the strongest mainstream alternative that actually recognises your income.
Usually longer than an automated mainstream approval, because a person or committee reviews the whole file, and credit committees may meet weekly or fortnightly. A well-prepared evidence pack, including the source-of-wealth trail, shortens the process considerably, which is a large part of what specialist preparation is for.
Potentially, yes. Where a mainstream lender may cap the interest-only element at a share of the loan or a maximum LTV, a private bank can structure the whole balance on interest-only against a credible repayment plan, such as annual distributions, bonus overpayments or planned asset sales. The plan is scrutinised as closely as the income.
Yes. Plenty of clients start on the high street while their income is straightforward and move to a private bank when the picture becomes more complex: after making partner, after a liquidity event, or when they need structuring mainstream products cannot offer. The reverse move also happens, back to a mainstream large-loan team once the premium is no longer buying anything.
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