Mortgage calculators
Know Your Money’s mortgage calculators have been designed to help you find out the fundamental factors of your individual circumstances such as 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 can I borrow on a mortgage?
Use CalculatorFind 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 will my mortgage cost monthly?
Use CalculatorThis 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.
What will happen if interest rates rise or fall?
Use CalculatorInterest rate rises can affect your monthly mortgage repayments considerably. Use this mortgage calculator to see how they will affect your mortgage.
How much can I borrow on a buy to let mortgage?
Use CalculatorFind out how much you can borrow on a buy-to-let mortgage with this easy to use mortgage calculator.
How much rent should I charge?
Use CalculatorThis 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.
Effects of making overpayments
Use CalculatorMaking regular overpayments on your mortgage can save you a significant amount of money, find out how much with this mortgage calculator.
Stamp duty calculator
Use CalculatorUse 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?
Use CalculatorRemortgaging 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.
YOUR HOME MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON YOUR MORTGAGE.
Products by merchant
Aldermore Mortgages
BM Solutions Mortgages
Buckinghamshire Building Society Mortgages
Chelsea Building Society Mortgages
Halifax mortgages
HSBC Mortgages
Kensington Mortgages
Kent Reliance Mortgages
NatWest Mortgages
Post Office Mortgages
RBS Mortgages
Saffron Building Society Mortgages
Santander Mortgages
The Mortgage Works Mortgages
Virgin Money Mortgages
Yorkshire Building Society Mortgages
Mortgage Calculators
- How much can I borrow?
- How much will it cost?
- What will happen if interest rates rise or fall?
- How much can I borrow on a buy to let mortgage?
- How much rent should I charge?
- Can I change my mortgage lender if I have early repayment charges?
- Effects of making overpayments
- Will my endowment repay my whole mortgage?
- Stamp duty calculator
- All mortgage calculators
Mortgages Guides
- Types of mortgage
- First time buyers
- Fixed vs tracker
- How to pay off your mortgage early
- Offset mortgages
- Remortgaging
- Buy to let mortgages
- Self-build mortgages
- The self-employed mortgage market
- Interest-only mortgages
- Mortgage lender roundup
- How to sell your house online
- How to beat rising mortgage rates
- Getting on to the property ladder
- Banks vs building societies
- What happens when your house is undervalued?



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