Mortgage calculators

  • Know Your Money’s mortgage calculators have been designed to help you find out the fundamental factors of your individual circumstances
  • Find out how much you can borrow and how much a mortgage will cost you.
  • Depending on your query we have a mortgage calculator for you.

Some common mortgage calculation questions

How much could I borrow on a mortgage?

Find out the maximum amount you can borrow. This may depend on a variety of things including: the deposit you can put down or outstanding financial commitments you may have (including credit cards or loans).

How much rent should I charge?

This mortgage calculator will give you an indication of how much you rent you would need to charge on your buy to let property, in order to cover the mortgage repayments.

What will happen if interest rates rise or fall?

Interest rate rises can affect your monthly mortgage repayments considerably. Use this mortgage calculator to see how they will affect your mortgage.

Effects of making overpayments

Making regular overpayments on your mortgage can save you a significant amount of money, find out how much with this mortgage calculator.

How much will my monthly mortgage repayments be?

This mortgage calculator will let you know how much your monthly repayments will be, depending on the size of your mortgage and the current interest rates.

How much can I borrow on a buy to let mortgage?

Find out how much you can borrow on a buy-to-let mortgage with this easy to use mortgage calculator.

Stamp duty calculator

Use this mortgage calculator to work out how much Stamp Duty Land Tax you will have to pay when buying a property.

Is it worth remortgaging if I have early repayment charges?

Remortgaging can often save you money, even if you have to pay an early repayment charge. This mortgage calculator will let you work out the interest rate you would need to be paying in order to make remortgaging financially worthwhile.