Mortgage Calculator

Our mortgage calculator allows you to calculate your mortgage repayments and gives you a guide of how much you can borrow to finance the purchase of your new home.


Please be aware that our mortgage calculator only provides a rough idea of your monthly repayments. There are a number of factors that may contribute to an increase in payments and this should be discussed with us prior to financial commitment.

Mortgage Calculator

Monthly Costs
Interest Only (£)

Repayment Basis (£)

How much can I borrow?

The single most important factor for lenders is whether you are able to make repayments on a loan.

How much you can borrow to finance the purchase of a property is based, primarily, on income but the lender will take into account a number of complex factors, which will determine the final amount lent to you by a mortgage provider.

Income, outgoings, credit rating, your general ‘financial health’ and the number of people applying for a mortgage (i.e. joint mortgage) are all factors that affect the amount a lender is prepared to lend you and the type of mortgage that you can get.

Most lenders will carry out a credit check and examine your income and outgoings to determine whether you can afford to make repayments each month.

As each case is different, the amount you can borrow depends on the lender and how much they are willing to lend you based on their investigations.

How much could my monthly mortgage repayments be?

Monthly mortgage payments depend on:

  • The amount you have set aside for a deposit
  • The price of the property your intend to purchase
  • How long the mortgage term is ( the length of time you agree to pay back the loan)
  • The interest rate offered by the lender.

Please note,

  • If the rate you have entered into the calculator is variable, lenders may decide to increase it
  • If the rate you’ve entered into the calculator is a discounted rate for a fixed period, your payment will increase once this period ends
  • You should check whether you will pay fees when you take out the mortgage.

When should I get a mortgage?

Many homebuyers risk losing their dream property because they leave arranging a mortgage too late. Securing a mortgage early can put you in a stronger position with sellers and put you at an advantage against rival buyers.

You should start the process of applying for a mortgage before you start house hunting. Homebuyers, particularly those self-employed, often find that they are unable to borrow as much as they thought, with offers falling through.

It is sensible to get an indication of how much a lender is prepared to lend you or, better still, to secure a 'mortgage in principle' before offering on a property. This shows that you are serious and ready to proceed.

How can I apply for a mortgage?

You can apply for a mortgage directly with a lender (by phone or email), but we’d recommend that you speak to one of our brokers first. We can arrange the best terms on your behalf. Both will need to carry out credit checks before proceeding with your application.

Knight Frank Finance mortgage brokers have an excellent success rate in helping clients from all financial backgrounds, securing attractive mortgage finance terms often unavailable elsewhere.

How long does it take to get a mortgage?

There is no set amount of time that it takes to have a mortgage approved. A lender will need to access your credit history as well as proof of income via wage slips or bank statements.

In the majority of cases, most homebuyers should expect to wait around a month from application to mortgage offer.

A mortgage in principle - which roughly outlines how much a lender is willing to lend you - can be agreed in as a little as a few hours but there is no guarantee you will receive the full amount.

What type of mortgage can I get?

You may be buying a ‘forever’ home where you can settle down. You may have children or are planning to start a family and will need more space in five years’ time.

By discussing your plans and ambitions with you, we will be able to negotiate the right mortgage when you are moving home, avoiding unnecessary charges and headaches further down the line.

Once we know exactly what you’re looking for, we will approach lenders to identify those that can offer a mortgage that’s 100% right for you.

It is important to note that a variety of factors will affect what type of mortgage you can get and how much you can borrow. For example, if you are buying jointly with a partner or parent.

We can secure a wide range of mortgages including:

  • Moving home mortgages
  • First time buyer mortgages
  • Re-mortgages
  • Buy-to-Let mortgages
  • New home mortgages

Why use a mortgage broker?

We can speed up the process by identifying the best mortgage rates to match your circumstances, often being privy to ‘off-market’ or ‘non high-street’ deals thanks to relationships with alternative lenders.

We can often negotiate excellent deals, which may be better than offered by a lender directly. Those with unusual circumstances will benefit because we can contact alternative lenders who are generally inaccessible otherwise.

We offer advice and guidance throughout the financing process and will act as your advocate with the mortgage lenders, making it less stressful.

We can help with:

  • Bridging loans
  • Buying a new build property
  • First time buyer purchases
  • Large loan
  • Flexible financial solutions should you have complex income.

Please get in touch to see how We can help you.

How can we help?

Call 02072682580 or submit details below:

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Mortgage Advice. The choice of interest rate and product terms will depend on your circumstances and the amount of the mortgage. Before you make a mortgage application, we will carry out a full review to establish your needs and preferences and if you meet the criteria, we will give advice and make a recommendation to you. There may be a fee for mortgage advice. All mortgages are subject to status. Please note that all products show an indicative rate only and may not be suitable for you. You must be 18 or over.

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Your home may be repossessed if you do not keep up with mortgage payments.

Knight Frank Finance LLP is a limited liability partnership registered in England and Wales with registered number OC322399. The principal office of Knight Frank Finance LLP is situated at 55 Baker Street, London W1U 8AN. Knight Frank Finance LLP is authorised and regulated by the Financial Conduct Authority under Financial Services Register number 459093.