Do I need to bank with a private bank already to get a private bank mortgage?

No, though it helps. Most private banks will consider a mortgage as the opening of a new relationship, not just a product for existing clients. Some, like C.Hoare & Co, are the exception and lend almost exclusively to existing private clients.

How much do I need in assets to qualify for a private bank mortgage?

There's no single threshold — it varies by bank and by case. Some banks expect a meaningful level of assets under management as a condition of lending; others are more flexible if the income and security profile is strong.

Is a private bank mortgage cheaper than a high street mortgage?

Not necessarily. Rates can be competitive, particularly for clients bringing significant assets to the relationship, but arrangement fees and AUM requirements often offset any headline saving. The right comparison depends on the full structure, not just the rate.

Can I get a private bank mortgage as a non-UK resident?

Yes — international and non-resident clients are a core part of the private banking mortgage market, particularly for prime London property. Structuring across jurisdictions and currencies is something private banks are typically well set up to handle.

What's the minimum loan size for a private bank mortgage?

Most private banks focus on loans from around £1-2 million upwards, though this varies by lender and by the wider relationship. Below this level, high street or specialist lending is usually more appropriate.

Can I use investment assets instead of income to secure a mortgage?

Often, yes. Many private banks will lend against a discounted value of a portfolio rather than requiring income alone to support the loan, which is particularly useful for clients with significant wealth but modest salaried income.

Do private banks offer interest-only mortgages?

Yes, more readily than most high street lenders, particularly where there's a credible and evidenced repayment strategy tied to assets, business sale proceeds, or other capital events.

How long does a private bank mortgage take to arrange?

It varies considerably. Because terms are relationship-led rather than templated, timelines can be longer than a straightforward high street application, though a well-prepared case presented to the right bank can still move quickly.

What documents will a private bank ask for?

Expect more than a standard mortgage application — typically a detailed statement of assets and liabilities, business accounts or tax returns for variable income, source of funds and source of wealth evidence, and details of any existing banking relationships.

Can a private bank mortgage be used for buy-to-let or commercial property?

Some private banks will lend on investment or commercial property as part of a wider relationship, though this is less standardised than residential lending and is assessed case by case.

What happens if my income is irregular or made up of bonuses and dividends?

Variable income is typically assessed holistically rather than through a fixed multiplier, which suits business owners, partners, and bonus-heavy earners.

Should I use a broker or approach a private bank directly?

A broker with active private banking relationships will usually have a clearer view of current lending appetite than a client approaching cold, and can present the case to the bank most likely to say yes on the best terms.

Is a private bank mortgage right for every high-net-worth borrower?

No. For a straightforward purchase with clean, provable income and no interest in a new banking relationship, a high street lender is often faster and cheaper. Private bank lending earns its place where complexity, scale, or an existing relationship make it worthwhile.

Lender Guides

What Happens When You Port Your HSBC Mortgage?

Porting an HSBC mortgage carries the existing rate across to a new property, but it is treated as a full new application. This guide covers income multiples, bonus treatment, timescales and how HSBC compares with the alternatives.

Written By: James Blackler

On Sep 7, 2026

At Oakstead Finance, we work with HSBC regularly and have a practical understanding of how the lender approaches applications. Porting an HSBC mortgage is treated as a brand new application rather than a simple transfer, so income, credit and the new property are all reassessed against HSBC’s current criteria rather than the terms in place when the original loan was taken out.

What Does Porting an HSBC Mortgage Actually Involve?

Porting an HSBC mortgage means carrying the existing rate and remaining term across to a new property rather than paying an early repayment charge and starting again. The rate itself moves, but the application does not.

✪ A full new application is submitted, including fresh affordability checks and a credit search
✪ The new property must meet HSBC’s lending and valuation criteria
✪ A property already purchased outright cannot have a rate ported onto it afterwards
✪ Where the sale completes before the purchase, HSBC allows the rate to be carried across within a six month window, with early repayment charges refunded once the new loan completes

How Much Can Be Borrowed When Porting an HSBC Mortgage?

The borrowing limit on a ported HSBC mortgage follows the same income multiple bands as a fresh application, applied to current income rather than the figures used originally.

✪ Up to 4.49 times income for borrowers earning up to £40,000
✪ Up to 4.75 times income between £40,000 and £100,000, with a minimum 10% deposit
✪ Up to 5.5 times income where combined income reaches £100,000 and a 10% deposit applies, including foreign currency earners
✪ Up to 6.5 times income for HSBC Premier customers, available to employed and self-employed applicants alike

An explanation of how lenders actually assess income multiples can be useful context here, since the headline multiple is only ever one part of what determines the final figure.

How Does HSBC Treat Bonus, Commission or Dividend Income?

Variable income is accepted by HSBC across a wider range of payment frequencies than some peers, though it is rarely used at full face value.

✪ Bonus, commission and overtime paid weekly, fortnightly, four-weekly, quarterly, half-yearly or annually can all be considered
✪ Variable income is typically averaged rather than counted in full, which softens the impact of a single strong or weak year
✪ Premier and High Value Mortgage Service applicants tend to see more accommodating treatment of bonuses, dividends and retained profits, particularly on larger loans

A broader look at how bonus-heavy income is assessed across lenders sets out where this kind of averaging tends to help, and where it can work against a borrower compared with a lender that counts a higher percentage of the most recent bonus alone.

What Happens if More Borrowing Is Needed on Top of the Port?

Moving to a more expensive property often means borrowing beyond what the existing rate covers, and HSBC handles that extra portion separately.

✪ The ported balance keeps its original rate
✪ Any additional borrowing is priced at HSBC’s current Home Mover rates, selected specifically for porting customers who are also increasing their loan
✪ The blended cost across the two portions should be compared against a full remortgage before a decision is made

How Long Does HSBC Porting Take?

Because porting is re-underwritten in full, timescales sit closer to a standard purchase application than a quick administrative switch.

✪ Income, credit and the new property are all assessed from scratch
✪ Valuation of the new property can add time compared with a rate switch on the same home
✪ Building in enough time before exchange can avoid a gap where neither the port nor a bridging arrangement is confirmed

What If the New Property Doesn’t Meet HSBC’s Criteria?

Not every property that would suit a buyer will suit HSBC’s lending policy, and this is a genuine reason a port can be declined even where affordability is comfortable.

✪ Non-standard construction, certain leasehold structures or properties with unusually large acreage can fall outside standard lending policy
✪ Valuation coming in below the agreed price affects the port in the same way it would any other mortgage application
✪ Where the property is unsuitable, a different lender may need to be considered instead of the existing rate

How Does Porting an HSBC Mortgage Compare With Remortgaging?

Whether porting an HSBC mortgage makes sense depends on how the existing rate compares with what is currently available elsewhere, not on porting being automatically the cheaper route.

Keeping the existing HSBC rate may avoid an early repayment charge and preserve a deal secured when rates were more favourable, while remortgaging to a new lender may provide a higher loan amount, a different income treatment, or a rate that better suits the new property, once all costs are weighed up. Reviewing how a product transfer compares with moving to a new lender can help frame this decision alongside the porting question itself.

HSBC at a Glance

Criteria	HSBC Position
Eligibility threshold	Existing residential mortgage in good standing, new property meets lending criteria
Maximum income multiple	Up to 6.5x for HSBC Premier customers
Standard income multiple range	4.49x – 5.5x depending on income and deposit
Bonus / commission treatment	Accepted across most pay frequencies, generally averaged
Typical turnaround	Comparable to a standard purchase application, full re-underwriting applies
Dedicated case manager	Yes, for Premier and High Value Mortgage Service cases; not standard otherwise

A Worked Example

Consider a Wandsworth couple with a joint income of £90,000, currently on an HSBC fixed rate with two years remaining, who want to move to a property costing £60,000 more than their current home. Their existing balance can be ported at the existing rate, provided affordability and the new property both pass HSBC’s checks. The additional £60,000 needed would be assessed separately at HSBC’s current Home Mover rate, rather than at the original rate, and their combined income of £90,000 would sit them within the 4.75x band rather than the Premier 6.5x band, since neither applicant holds Premier status. This blended structure, old rate plus new-rate top-up, is the shape most porting cases actually take, rather than the whole loan moving across at a single unchanged rate. This example is entirely hypothetical and does not represent an actual client.

Alternatives Worth Considering

Barclays offers a genuine point of difference on variable income, using a two-year average of bonus or commission with no basic salary cap applied to the amount used, which can suit applicants whose bonus has grown steadily rather than stayed flat. Nationwide applies a broadly similar averaging approach to HSBC but does not require a Premier-equivalent banking relationship to access its higher income multiples, which may suit borrowers who would rather not restructure their banking to qualify for an enhanced multiple.

What You Need to Know

✪ Porting an HSBC mortgage means a full new application, not a simple transfer
✪ Income multiples run from 4.49x up to 6.5x for Premier customers, and any top-up borrowing is priced separately
✪ Bonus and commission income is accepted across most payment frequencies but is usually averaged, not counted in full
✪ The new property must independently meet HSBC’s lending and valuation criteria
✪ Rates, criteria and income multiples can change, and current figures should always be confirmed before an application is submitted

Book a Consultation

Frequently Asked Questions

Can any HSBC mortgage be ported?

Most HSBC residential mortgages are portable in principle, but approval is never automatic. Each case is reassessed as a full new application against current affordability and lending criteria.

Does porting an HSBC mortgage require a new credit check?

Yes. A fresh credit search and full affordability assessment are carried out as part of any port, in the same way they would be for a new application.

Can an HSBC mortgage be ported after the sale of the existing property?

HSBC allows a rate to be carried across within six months of the original property being sold, provided any early repayment charge is settled at the time and the new mortgage completes within that window. The charge is then refunded once the new loan is in place.

Is HSBC’s income multiple different for porting compared with a new application?

No. The same income multiple bands apply, from around 4.49x up to 6.5x for Premier customers, but they are applied to current income figures rather than those used when the mortgage was first taken out.

What happens if the new property is worth less than expected on valuation?

A lower valuation affects a ported application in the same way it would any other mortgage, and can reduce the amount available or require a larger deposit to maintain the required loan-to-value.

Can bonus or commission income still be used when porting an HSBC mortgage?

Yes, HSBC accepts variable income paid at a range of frequencies, though it is generally averaged rather than used in full, which should be factored into any borrowing estimate.

Is it better to port or to remortgage with a new lender?

This depends on individual circumstances. Porting may avoid an early repayment charge and retain a favourable rate, while remortgaging may offer a higher loan amount or more suitable terms once all costs are considered.

How long should be allowed for an HSBC porting application?

Enough time should be allowed for a full re-underwriting process, including a new valuation, which typically runs on a similar timescale to a standard purchase application rather than a quick switch.

Written By James Blackler

James Blackler founded Oakstead Finance to give complex cases the attention they're usually denied. Based at Arding & Hobbs in Clapham Junction, he works with London buyers and homeowners whose applications need more than a standard lender checklist; complex income, tight timelines, or a structure most brokers won't take the time to get right.

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