We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies as per our policy which also explains how to change your preferences.

Mortgage interest rate rise calculator

Use our mortgage interest rate rise calculator to work out how much your monthly mortgage repayments could change if interest rates increase.

Use our interest rate calculator to find out how much extra you'd pay if your mortgage rate increased by between 0.25% and 3%. Just enter your current interest rate, mortgage term and outstanding loan, and we’ll do the rest.

And if you want to discuss your mortgage options, call Which? Mortgage Advisers for a free consultation on 0800 197 8461.

How to beat mortgage interest rate rises

If you're on a variable-rate deal such as a discount or tracker mortgage, changes to the Bank of England base rate or your bank's standard variable rate will have an immediate impact on how much you're paying each month.

If this happens, it's worth investigating whether you could save money by remortgaging.

The other time that a rate rise can hit you hard is when you reach the end of an initial deal period - for example, if you've reached the end of your fixed-rate mortgage's introductory period, which might be two or five years.

When this period runs out, you’ll usually revert to your lender’s standard variable rate (SVR), which is likely to be a lot higher.

In most cases, you’ll be able to get a better deal if you remortgage your home at this point, as you’ll have built up more equity in your property (unless you had an interest-only mortgage) and introductory rates on new deals will almost always be cheaper than your current lender’s SVR.

Get expert, one-to-one advice on your mortgage interest rate

Which? Mortgage Advisers can check whether you're on the best possible interest rate for your situation, and help you remortgage if you're not. Call 0800 197 8461 for a free chat, or fill out the form below and they'll call you.


Which? Mortgage Advisers listen carefully to what you need, then search thousands of mortgages to choose the No.1 for you, even if you can only go direct.

Calls are free from mobiles and landlines

0292 267 0302
We’re closed. Open Friday from 8am
Arrange a call back
Your home may be repossessed if you do not keep up your mortgage repayments