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

NatWest How Much Can I Borrow? A Practical Guide

NatWest how much can I borrow depends on income, LTV, expenditure and credit commitments. This guide explains higher income multiples and variable-income rules.

Written By: James Blackler

On Aug 28, 2026

At Oakstead Finance, we work with NatWest regularly and have a practical understanding of how the lender approaches applications. NatWest can apply loan-to-income caps of up to six times income for qualifying repayment applications at 75% loan to value or below, although its affordability assessment may produce a lower amount.

How Much Can You Borrow With NatWest?

NatWest calculates borrowing from income, expenditure, existing debts, dependants, deposit or equity, mortgage term and the application’s loan-to-value ratio.

✪ The affordability calculator provides an initial indication without conducting a credit search.
✪ An agreement in principle uses current credit-bureau information and may return a different figure.
✪ Passing the calculator does not amount to an agreement to lend.

How Do NatWest Income Multiples Affect Borrowing?

NatWest uses LTI caps that vary according to income, LTV and whether the application is made by one or two applicants.

For repayment applications at 75% LTV or below, sole applicants earning at least £75,000 and joint applicants earning at least £100,000 may receive a cap of up to six times income. Sole or joint applicants with qualifying income of at least £40,000 may receive a cap of up to 5.50 times income at the same LTV.

These are upper limits rather than offers. Oakstead’s guide to how mortgage lenders apply income multiples explains why commitments and household costs can reduce the final amount.

How Much Can You Borrow With NatWest Using Bonus Income?

NatWest can use regular bonuses and commission when the income is supported by the required payment history.

✪ Up to 100% of a regular monthly bonus may be used when supported by three consecutive payslips and year-to-date earnings.
✪ Quarterly bonuses may be considered at 100% using the latest four payslips showing each payment.
✪ Annual or twice-yearly discretionary bonuses are limited to 50% and require a two-year history.
✪ Commission normally requires the latest three consecutive payslips, supported by year-to-date income.

How Does NatWest Assess Company-Director Income?

NatWest treats limited-company directors with a shareholding of at least 20% as self-employed and normally assesses salary or directors’ remuneration plus dividends.

Where the latest income has remained stable or increased, NatWest averages the latest two years. Where income has decreased, the latest year is used. Dividends must not exceed the company’s post-tax profit, while retained profit and repayments of directors’ loans are excluded.

The required evidence can include finalised accounts, tax calculations and tax-year overviews. Oakstead Finance explains how to obtain SA302s and tax-year overviews.

NatWest at a Glance

Borrowing criterion	NatWest position
Higher-earner repayment LTI	Up to 6.00x at 75% LTV or below
Higher-earner threshold	£75,000 sole or £100,000 joint
£40,000+ income band	Up to 5.50x at 75% LTV or below
Maximum repayment term	Up to 40 years
Annual discretionary bonus	Maximum 50%
Average speed to offer	Eight days at time researched

What Does a NatWest Borrowing Example Look Like?

Consider a hypothetical sole applicant with a £75,000 basic salary and annual discretionary bonuses of £20,000 and £16,000 in the latest two years. The average bonus is £18,000, but NatWest’s 50% limit would produce £9,000 of usable bonus income, giving total assessable income of £84,000.

At 70% LTV, a requested £450,000 repayment mortgage would equal approximately 5.36 times that income. It sits below the possible six-times cap, but loans, credit-card balances, dependants, pension contributions and household expenditure could still reduce the final amount.

How Much Can You Borrow With NatWest on Interest Only?

NatWest applies separate income, LTV, term and repayment-plan conditions when any part of the mortgage is interest only.

✪ Minimum sole income is £75,000.
✪ Joint minimum income is £100,000, or one applicant must earn more than £75,000.
✪ Maximum LTV is 85%, subject to the selected repayment vehicle.
✪ An acceptable plan must cover repayment of the interest-only capital.

How Quickly Does NatWest Confirm Borrowing?

NatWest may provide an online agreement in principle in under ten minutes, but the amount remains provisional until the full application is assessed.

At the time researched, NatWest displayed an average speed to offer of eight days. This is a current service indicator rather than a promise for an individual case. Document quality, valuation requirements and underwriting questions can change the timetable.

Which Specialist Alternatives Could Be Considered?

Kensington and Precise Mortgages may provide alternatives where the applicant’s income or credit history does not fit NatWest’s standard model.

✪ Kensington may assess qualifying high-earning directors using salary plus their share of company net profit and offers selected ranges with borrowing of up to six times income.
✪ Precise can consider applicants with one year’s accounts and certain recent credit issues, subject to its product and credit assessment.

Specialist criteria may produce a different result, but rates and fees can be higher. The lender offering the largest loan is not automatically the lowest-cost option.

What You Need to Know

How much can you borrow with NatWest depends on the complete affordability assessment rather than multiplying gross income by a headline figure.

✪ Up to six times income may apply to qualifying repayment applications at 75% LTV or below.
✪ Variable and self-employed income are subject to evidence and calculation rules.
✪ Criteria and service levels can change and should be confirmed before an application.

Book a Consultation

Frequently Asked Questions

How much can you borrow with NatWest?

NatWest calculates borrowing from income, expenditure, credit commitments, dependants, mortgage term and LTV. Qualifying repayment applications may receive an LTI cap of up to six times income.

Does the NatWest calculator guarantee a mortgage amount?

No. The calculator provides an indication without completing a credit search, and the result may change when an agreement in principle is submitted.

Who can access six times income with NatWest?

At 75% LTV or below, sole applicants earning at least £75,000 and joint applicants earning at least £100,000 may receive a six-times LTI cap. The mortgage must be on a repayment basis.

Can NatWest use bonus income?

NatWest can use qualifying bonus income. Regular monthly and quarterly bonuses may be considered at 100%, while annual or twice-yearly discretionary bonuses are capped at 50%.

Can NatWest use commission income?

NatWest can consider commission supported by the latest three consecutive payslips and year-to-date earnings. Weekly commission normally requires thirteen payslips.

How does NatWest assess company directors?

Directors with at least 20% shareholding are treated as self-employed. NatWest generally uses salary or directors’ remuneration plus sustainable dividends over the latest two years.

What mortgage term does NatWest offer?

Residential repayment terms can extend up to 40 years, subject to age and affordability. A longer term can reduce monthly payments but increases the total interest paid.

How long does a NatWest mortgage offer take?

NatWest displayed an average speed to offer of eight days when researched. This is not a guarantee because evidence, valuation and underwriting complexity affect each application.

Arrange a consultation with Oakstead Finance.

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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