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Interest rate calculator

What if your rate changes?

See how a change of interest rates would affect your mortgage payments

Your home may be repossessed if you do not keep up repayments on your mortgage.

Let’s get started

This calculator could be helpful if you’re coming to the end of a fixed-rate period, shopping for a new deal or you’re thinking about potential changes to the Bank of England base rate.

Mortgage Calculator

Mortgage interest rate calculator

See how a change of interest rates would affect your monthly payments.

Your rough mortgage interest rate estimate

Based on what you told us

Try a different interest rate

Today After rate change

Base rate change and mortgages

About the Bank of England base rate

Find out why the base rate affects your mortgage and use our calculator to see how your monthly payment could be affected.

Exclusive mortgage rates for existing customers

Switch to a new rate if you have a mortgage with us

If you have a mortgage with us, we can offer you exclusive rates if you want to switch to a new deal – and you could borrow more

Help with mortgage payments

Worried you can’t afford your payments?

If you're concerned that you won’t be able to make your mortgage payments, contact us right now to find out about the various ways we can help you.

Need some help?

Chat to us online

Chat to us online if you have a question about using our mortgage calculator.

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Call us1any time – lines may be closed at off-peak times on bank holidays and during Christmas.

0800 197 1081