How Much Does A £1 Million Mortgage Cost Per Month?
A £1 million repayment mortgage would cost approximately £5,846 per month over 25 years at an illustrative interest rate of 5%. Over 30 years, the monthly repayment would reduce to approximately £5,368.
For larger mortgages, borrowing £2 million would cost around £11,692 per month on the same 25-year terms, while a £3 million mortgage would cost approximately £17,538.
The amount you pay depends on the mortgage interest rate, term, repayment type and the lender’s criteria.
Below, we compare the cost of borrowing between £1 million and £4 million, including monthly repayments, income requirements, deposits and specialist lending considerations.
How Much Are the Monthly Repayments on a £1 Million to £4 Million Mortgage?
The table below compares estimated monthly repayments for mortgages between £1 million and £4 million at different interest rates.
| Mortgage Amount | 4% Interest | 5% Interest | 6% Interest |
|---|---|---|---|
| £1 million | £5,278 | £5,846 | £6,443 |
| £2 million | £10,557 | £11,692 | £12,886 |
| £3 million | £15,835 | £17,538 | £19,329 |
| £4 million | £21,113 | £23,384 | £25,772 |
Figures assume a 25-year capital repayment mortgage at a constant interest rate throughout the term. Rates are illustrative, not current mortgage offers. Repayments are rounded to the nearest pound and exclude fees.
The mortgage term can also make a considerable difference. For example, a £1 million mortgage at 5% over 30 years would cost approximately £5,368 per month, compared with £5,846 over 25 years.
Although a longer term reduces monthly repayments, it generally increases the total interest paid.
You can use our mortgage calculator to compare different borrowing amounts, interest rates and repayment terms.
Need Help Understanding The Cost Of A £1 Million Mortgage?
Larger mortgage applications are often more complex than standard cases, especially where income includes bonuses, commission, dividends, retained profits, foreign currency income, investment income or self-employed earnings.
At Kerr & Watson, we can assess your income, deposit and wider circumstances to help you understand what may be affordable and which lenders may be suitable.
How Much Does an Interest-Only Mortgage of £1 Million to £4 Million Cost?
With an interest-only mortgage, your monthly payments cover the interest charged without reducing the original loan balance.
At an illustrative 5% interest rate, monthly interest-only payments would be:
| Mortgage Amount | Monthly Interest-Only Payment |
|---|---|
| £1 million | £4,167 |
| £2 million | £8,333 |
| £3 million | £12,500 |
| £4 million | £16,667 |
Figures assume a constant 5% interest rate and exclude fees.
Although interest-only payments are lower than capital repayments, you remain responsible for repaying the original mortgage balance at the end of the term.
Lenders will normally require an acceptable repayment strategy, which might include suitable investments, assets or the planned sale of a property, depending on their criteria.
Interest-only lending can be particularly relevant for some higher-value mortgage applications, although availability depends on income, loan-to-value, repayment arrangements and lender requirements.
What Salary Do You Need for a £1 Million to £4 Million Mortgage?
The income required will depend on the lender’s affordability assessment, your existing commitments and how your income is earned.
Some lenders assess borrowing using an income multiple, although the maximum available can vary significantly.
The table below gives examples of the household income required at different multiples.
| Mortgage Amount | At 4.5× Income | At 5× Income |
|---|---|---|
| £1 million | £222,222 | £200,000 |
| £2 million | £444,444 | £400,000 |
| £3 million | £666,667 | £600,000 |
| £4 million | £888,889 | £800,000 |
These figures are mathematical illustrations only and do not guarantee that a lender will offer the stated loan amount or income multiple.
Certain lenders may consider higher income multiples for applicants who meet specific criteria. Others impose maximum mortgage amounts or lower multiples for larger loans.
Affordability assessments can also take account of outstanding credit commitments, school fees, childcare, dependants, pension contributions and other regular expenditure.
For customers with bonuses, commission, self-employed income or income from investments, choosing a lender that assesses these earnings appropriately can make a substantial difference.
How Much Deposit Do You Need for a £1 Million to £4 Million Mortgage?
The deposit required depends on the property’s purchase price and the loan-to-value (LTV) the lender is prepared to offer.
For example, a £1 million mortgage at 80% LTV would require a property worth £1.25 million and a deposit of £250,000.
The table below shows examples at 80% LTV.
| Mortgage Amount | Property Value | Deposit Required |
|---|---|---|
| £1 million | £1,250,000 | £250,000 |
| £2 million | £2,500,000 | £500,000 |
| £3 million | £3,750,000 | £750,000 |
| £4 million | £5,000,000 | £1,000,000 |
These are illustrative examples based on a 20% deposit and an 80% LTV mortgage. The availability of 80% LTV lending for larger loans depends on individual lender criteria.
Some lenders may consider smaller deposits, while others require a lower LTV for higher mortgage amounts.
The deposit is not the only consideration. Lenders may also assess the property type, its location, the source of funds and whether the borrowing is appropriate for your circumstances.
Which Lenders Offer Mortgages Between £1 Million and £4 Million?
Mortgages of this size can be available through high street banks, specialist mortgage lenders and private banks.
However, the maximum loan amount and criteria vary between lenders.
Some mainstream lenders are comfortable offering mortgages of £1 million or more to applicants who meet their income and affordability requirements.
For larger borrowing amounts, particularly where income or assets are more complex, specialist lenders and private banks may offer different underwriting approaches.
Private banking is not automatically the best or cheapest option for a large mortgage. Some providers require substantial assets, an existing banking relationship or additional eligibility criteria.
At Kerr & Watson, we compare lenders based on the customer’s circumstances, including income, deposit, repayment strategy and overall borrowing requirements.
You can find more information here on large mortgages.
Can You Get a Large Mortgage With Complex Income?
Yes, depending on the lender’s criteria and your financial circumstances.
Applicants borrowing between £1 million and £4 million may receive income from several sources, including:
- Basic salary, bonuses and commission
- Self-employment or company director income
- Dividends and retained company profits
- Investment income
- Foreign currency earnings
- Trust income or other eligible income sources
Lenders do not all assess these income types in the same way.
For example, one lender may use an average of a customer’s bonus income over previous years, while another may use the latest year’s earnings or only a proportion of the bonus.
Similarly, some lenders can consider a company director’s share of business profits, while others rely primarily on salary and dividends.
Understanding these differences is important when arranging a larger mortgage, particularly where affordability cannot be established using basic salary alone.
What Other Costs Are Involved in a £1 Million to £4 Million Mortgage?
Monthly repayments are only one part of the overall cost.
Additional expenses can include lender arrangement fees, valuation costs, legal fees, mortgage advice fees and, when purchasing a property, Stamp Duty Land Tax in England.
Some lenders charge a fixed arrangement fee, while others charge a percentage of the mortgage.
For example, a 1% arrangement fee would equal £10,000 on a £1 million mortgage or £40,000 on a £4 million mortgage. This is an illustration, not an indication that all lenders charge these amounts.
Valuation and legal costs can also be higher for particularly valuable or unusual properties.
At Kerr & Watson, our standard mortgage advice and application fee is £595, generally split into £150 on application and £445 on mortgage offer. Depending on the case, our fee can range from £0 to £1,995. We explain and agree the applicable fee before proceeding.
It is important to consider the total cost of the mortgage, including fees, rather than comparing interest rates alone.
Frequently Asked Questions About £1 Million to £4 Million Mortgages
How much does a £1 million mortgage cost per month?
At an illustrative interest rate of 5% over 25 years, a £1 million repayment mortgage would cost approximately £5,846 per month. On an interest-only basis at the same rate, the monthly payment would be approximately £4,167.
How much does a £2 million mortgage cost per month?
A £2 million repayment mortgage at an illustrative 5% interest rate over 25 years would cost approximately £11,692 per month. Monthly payments would vary depending on the interest rate, mortgage term and repayment type.
How much does a £3 million mortgage cost per month?
At an illustrative 5% interest rate over 25 years, a £3 million repayment mortgage would cost approximately £17,538 per month. On an interest-only basis at 5%, monthly payments would be £12,500, with the full capital balance remaining outstanding.
How much does a £4 million mortgage cost per month?
A £4 million repayment mortgage over 25 years at an illustrative 5% interest rate would cost approximately £23,384 per month. The same mortgage on an interest-only basis at 5% would cost approximately £16,667 per month, without reducing the loan balance.
Can I get a £1 million mortgage if I am self-employed?
Potentially, yes. Many lenders consider self-employed applicants for large mortgages. The amount you can borrow will depend on the income evidence available, trading history, affordability and lender criteria. Some lenders may assess retained company profits where their criteria permit.
Do I need a private bank for a £2 million or £3 million mortgage?
Not necessarily. Some mainstream banks offer mortgages of £2 million or more, subject to their lending limits and affordability criteria. Private banks may be worth considering for applicants with more complex income, substantial assets or specialist borrowing requirements.
Speak to Kerr & Watson About a Large Mortgage
Whether you are looking to borrow £1 million, £2 million, £3 million or £4 million, Kerr & Watson can help you understand your borrowing options, monthly repayments and lender requirements.
As an independent, whole-of-market mortgage broker, we work with high street banks, specialist lenders and private banks to identify suitable mortgage options.
Speak to Kerr & Watson to discuss your mortgage requirements.
