£4 Million Mortgage: Monthly Repayments & Income Requirements

by Aaron Strutt

Apr 01 2025

£4,000,000 Mortgage: Monthly Repayments & Income Requirements

Can you get a £4 million mortgage?

Yes! Assuming you meet the mortgage affordability checks and eligibility criteria for a £4 million mortgage, it's possible. Trinity Financial has access to many lenders keen to issue larger mortgage loans, especially to high-net-worth borrowers. 

£4 Million Mortgage Requirements

Secure a £4 million mortgage to purchase your dream home with expert guidance from Trinity Financial.

To qualify for a £4 million mortgage, you typically need a deposit of at least 10% of the purchase price, though some lenders may require up to 20%. A single or joint income of at least £800,000 is usually required. 

When writing this article, the estimated monthly repayments for a £4 million mortgage are around £13,333.33 on interest-only or £19.091.61 on capital repayment. This calculation is based on a 4% interest rate, a 30-year term, and a capital repayment structure, provided applicants have a 40% deposit.

This guide outlines expected repayments, income requirements, and other key factors affecting your mortgage costs.

How many lenders offer £4 million mortgages and what are the rates? 

A surprising number of mortgage lenders offer larger mortgage loans, including many of the high-street banks and building societies. HSBC for Intermediaries, Santander, Halifax for Intermediaries, and NatWest typically offer competitively priced larger mortgages. Private banks like Coutts, Investec, and Arbuthnot Latham also want to issue larger mortgages.

Many lenders offering larger mortgage loans charge a small premium or no premium for these rates. For example, Nationwide for Intermediares offers its lowest two, three, and five-year fixes to borrowers looking to raise between £300,000 and £5 million.

How much does a £4 million mortgage cost per month?

Lenders work out mortgage affordability based on income and expenditures, applying a multiple of earnings to assess borrowing capacity. Since criteria vary across lenders, some may offer more flexibility than others, particularly for high-value loans. 

Most lenders base affordability on salaried income, typically allowing borrowing up to four times annual earnings. This may sometimes extend to 5.5 times income or even six times. A portion of annual bonuses may also be considered, though rarely in full unless through specialist providers. Additionally, lenders assess fixed expenses such as childcare, private school fees, cars on finance, gym memberships and credit cards or loans through a process known as ‘stress-testing.’

If you had a 25% deposit, the monthly repayments on a £4 million interest-only mortgage would be approximately £14,166, increasing to £19,677.60 on a full capital repayment mortgage over a 30-year term. This is based on a rate of 4.25%. 

Deposit Requirements for a £4 Million Mortgage

Lenders generally require a deposit between 10% and 20% of the property value. The loan-to-value (LTV) ratio plays a crucial role—lower LTVs reduce lender risk and result in lower repayments. The most competitively priced rates are for borrowers with a 40% deposit. 

Many high-street lenders enforce income caps for high-value loans, typically limiting lending to 75-80% LTV for mortgages above £1 million. This means that, depending on the lender, you may need a minimum deposit of 10% to secure financing.

However, if you meet the necessary criteria and present a strong application with minimal risk factors (such as a good credit history and large income), you may still secure a £4 million mortgage with standard deposit requirements similar to those for conventional residential loans.

What documents will I need for a larger mortgage loan?

It is important to check your credit history before applying to ensure no bad credit issues exist and remove any inaccurate or outdated information that could hinder your chances of securing the mortgage you need.

Gathering all the necessary paperwork for your application: Trinity Financial's brokers will be able to guide you through the mortgage application process and all the typical documents required. This is likely to include proof of income, at least three months of bank statements, company accounts, list of assets including other properties owned. Personal ID, proof of address, evidence of deposit, latest P60 form, etc.

Call Trinity Financial on 020 7016 0790 to secure a £4 million mortgage, submit a questionnaire or book a consultation 

The information contained within was correct at the time of publication but is subject to change.

Your mortgage is secured on your property. Your property may be repossessed if you do not keep up repayments on your mortgage