Rate Change Calculator

Use our rate change calculator to get an idea of how much your monthly mortgage payment might change by...

You can find your current mortgage details in your most recent annual mortgage statement.

If you have a fixed rate mortgage, any change to the Bank of England base rate will not affect the fixed interest rate during the fixed rate period.

Where your mortgage is made up of a number of variable rate sub-accounts or parts, you’ll need to complete separate calculations for each one.

If your mortgage is affected by a rate change, we will always write to you, to let you know your new monthly payment ahead of it being taken.

Current mortgage balance

You can find your mortgage balance in your most recent annual mortgage statement.

You'll need to take into account any payments made on your mortgage since the date of the statement. If you've fallen behind with your payments on any part of your mortgage that is a repayment mortgage, you'll need to take off the amount of arrears from the current balance.

Important: If you have a mortgage made up of part repayment and part interest only, you'll need to do a separate calculation for each.

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Remaining term

The length of time you have left to pay back your mortgage.

You can find your remaining term details in your most recent annual mortgage statement.

Important: Please check the remaining term on your main account and each sub account.

Current interest rate

This is the interest rate for your sub account on the date shown.

You can find your interest rate details in your most recent annual mortgage statement.

Important: Please check the interest rate on your main account and each sub account.

Repayment type

This your current repayment method. It can be either Repayment or Interest Only. You can find your repayment details in your most recent annual mortgage statement.

Interest rate change

Use the + or - buttons to add and deduct amounts of 0.25%. Or just type in the rate change percentage you'd like to see illustrated.

Estimated monthly payment change

Based on your inputs, if the interest rate changed from ##currentinterestrate##% to ##newinterestrate##%, the approximate change to the monthly payment would be:

£##changerepayment## per month*

* The figure shown is for illustrative purposes only.

Based on your inputs, if the interest rate changed from ##currentinterestrate##% to ##newinterestrate##%, the approximate change to the monthly payment would be:

£##changeinterest## per month*

* The figure shown is for illustrative purposes only.

Why is the estimated payment change more/less than I expected?

The figure shown is for illustrative purposes only.

If your mortgage is affected by a rate change, we will always write to you, to let you know your new monthly payment ahead of it being taken.

Further information

Frequently asked questions

Facing financial difficulties

YOUR HOME MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON YOUR MORTGAGE.

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